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d30b5a19-0f95-4c57-9733-dcd8d241d153
adversarial-background-aware-loss-for-weakly
2007.06643
null
https://arxiv.org/abs/2007.06643v1
https://arxiv.org/pdf/2007.06643v1.pdf
Adversarial Background-Aware Loss for Weakly-supervised Temporal Activity Localization
Temporally localizing activities within untrimmed videos has been extensively studied in recent years. Despite recent advances, existing methods for weakly-supervised temporal activity localization struggle to recognize when an activity is not occurring. To address this issue, we propose a novel method named A2CL-PT. Two triplets of the feature space are considered in our approach: one triplet is used to learn discriminative features for each activity class, and the other one is used to distinguish the features where no activity occurs (i.e. background features) from activity-related features for each video. To further improve the performance, we build our network using two parallel branches which operate in an adversarial way: the first branch localizes the most salient activities of a video and the second one finds other supplementary activities from non-localized parts of the video. Extensive experiments performed on THUMOS14 and ActivityNet datasets demonstrate that our proposed method is effective. Specifically, the average mAP of IoU thresholds from 0.1 to 0.9 on the THUMOS14 dataset is significantly improved from 27.9% to 30.0%.
['Kyle Min', 'Jason J. Corso']
2020-07-13
null
https://www.ecva.net/papers/eccv_2020/papers_ECCV/html/2121_ECCV_2020_paper.php
https://www.ecva.net/papers/eccv_2020/papers_ECCV/papers/123590273.pdf
eccv-2020-8
['weakly-supervised-action-localization', 'weakly-supervised-temporal-action']
['computer-vision', 'computer-vision']
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[8.415910720825195, 0.6566603183746338]
b12bba26-7d89-470c-b5ae-5ff6363d7aee
molecular-graph-convolutions-moving-beyond
1603.00856
null
http://arxiv.org/abs/1603.00856v3
http://arxiv.org/pdf/1603.00856v3.pdf
Molecular Graph Convolutions: Moving Beyond Fingerprints
Molecular "fingerprints" encoding structural information are the workhorse of cheminformatics and machine learning in drug discovery applications. However, fingerprint representations necessarily emphasize particular aspects of the molecular structure while ignoring others, rather than allowing the model to make data-driven decisions. We describe molecular "graph convolutions", a machine learning architecture for learning from undirected graphs, specifically small molecules. Graph convolutions use a simple encoding of the molecular graph---atoms, bonds, distances, etc.---which allows the model to take greater advantage of information in the graph structure. Although graph convolutions do not outperform all fingerprint-based methods, they (along with other graph-based methods) represent a new paradigm in ligand-based virtual screening with exciting opportunities for future improvement.
['Vijay Pande', 'Kevin McCloskey', 'Steven Kearnes', 'Marc Berndl', 'Patrick Riley']
2016-03-02
null
null
null
null
['graph-regression']
['graphs']
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[5.105561256408691, 5.782642364501953]
ea1fec54-cfc2-44a0-9e27-17943c2f64ea
no-reference-image-quality-assessment-based
null
null
https://www.mdpi.com/2313-433X/6/8/75
https://www.mdpi.com/2313-433X/6/8/75/htm
No-Reference Image Quality Assessment Based on the Fusion of Statistical and Perceptual Features
The goal of no-reference image quality assessment (NR-IQA) is to predict the quality of an image as perceived by human observers without using any pristine, reference images. In this study, an NR-IQA algorithm is proposed which is driven by a novel feature vector containing statistical and perceptual features. Different from other methods, normalized local fractal dimension distribution and normalized first digit distributions in the wavelet and spatial domains are incorporated into the statistical features. Moreover, powerful perceptual features, such as colorfulness, dark channel feature, entropy, and mean of phase congruency image, are also incorporated to the proposed model. Experimental results on five large publicly available databases (KADID-10k, ESPL-LIVE HDR, CSIQ, TID2013, and TID2008) show that the proposed method is able to outperform other state-of-the-art methods.
['Domonkos Varga']
2020-07-30
null
null
null
null
['no-reference-image-quality-assessment']
['computer-vision']
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[11.72169303894043, -1.9646824598312378]
aea21f14-5c89-45bd-b4d2-91cb7343796c
end-to-end-face-swapping-via-adaptive-latent
2303.04186
null
https://arxiv.org/abs/2303.04186v1
https://arxiv.org/pdf/2303.04186v1.pdf
End-to-end Face-swapping via Adaptive Latent Representation Learning
Taking full advantage of the excellent performance of StyleGAN, style transfer-based face swapping methods have been extensively investigated recently. However, these studies require separate face segmentation and blending modules for successful face swapping, and the fixed selection of the manipulated latent code in these works is reckless, thus degrading face swapping quality, generalizability, and practicability. This paper proposes a novel and end-to-end integrated framework for high resolution and attribute preservation face swapping via Adaptive Latent Representation Learning. Specifically, we first design a multi-task dual-space face encoder by sharing the underlying feature extraction network to simultaneously complete the facial region perception and face encoding. This encoder enables us to control the face pose and attribute individually, thus enhancing the face swapping quality. Next, we propose an adaptive latent codes swapping module to adaptively learn the mapping between the facial attributes and the latent codes and select effective latent codes for improved retention of facial attributes. Finally, the initial face swapping image generated by StyleGAN2 is blended with the facial region mask generated by our encoder to address the background blur problem. Our framework integrating facial perceiving and blending into the end-to-end training and testing process can achieve high realistic face-swapping on wild faces without segmentation masks. Experimental results demonstrate the superior performance of our approach over state-of-the-art methods.
['Qian Li', 'Chao Shen', 'Pengbin Hu', 'Chenhao Lin']
2023-03-07
null
null
null
null
['face-swapping']
['computer-vision']
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[12.687067031860352, -0.018864108249545097]
58dfbd3d-a926-4fb4-9666-3e5d8af72a42
reactive-and-safe-road-user-simulations-using
2109.06689
null
https://arxiv.org/abs/2109.06689v1
https://arxiv.org/pdf/2109.06689v1.pdf
Reactive and Safe Road User Simulations using Neural Barrier Certificates
Reactive and safe agent modelings are important for nowadays traffic simulator designs and safe planning applications. In this work, we proposed a reactive agent model which can ensure safety without comprising the original purposes, by learning only high-level decisions from expert data and a low-level decentralized controller guided by the jointly learned decentralized barrier certificates. Empirical results show that our learned road user simulation models can achieve a significant improvement in safety comparing to state-of-the-art imitation learning and pure control-based methods, while being similar to human agents by having smaller errors to the expert data. Moreover, our learned reactive agents are shown to generalize better to unseen traffic conditions, and react better to other road users and therefore can help understand challenging planning problems pragmatically.
['Chuchu Fan', 'Zengyi Qin', 'Yue Meng']
2021-09-14
null
null
null
null
['user-simulation']
['natural-language-processing']
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[5.099752426147461, 1.4272388219833374]
3012205c-f329-481d-aaef-e7b604f4000c
revisiting-event-argument-extraction-can-eae
2306.00502
null
https://arxiv.org/abs/2306.00502v1
https://arxiv.org/pdf/2306.00502v1.pdf
Revisiting Event Argument Extraction: Can EAE Models Learn Better When Being Aware of Event Co-occurrences?
Event co-occurrences have been proved effective for event extraction (EE) in previous studies, but have not been considered for event argument extraction (EAE) recently. In this paper, we try to fill this gap between EE research and EAE research, by highlighting the question that ``Can EAE models learn better when being aware of event co-occurrences?''. To answer this question, we reformulate EAE as a problem of table generation and extend a SOTA prompt-based EAE model into a non-autoregressive generation framework, called TabEAE, which is able to extract the arguments of multiple events in parallel. Under this framework, we experiment with 3 different training-inference schemes on 4 datasets (ACE05, RAMS, WikiEvents and MLEE) and discover that via training the model to extract all events in parallel, it can better distinguish the semantic boundary of each event and its ability to extract single event gets substantially improved. Experimental results show that our method achieves new state-of-the-art performance on the 4 datasets. Our code is avilable at https://github.com/Stardust-hyx/TabEAE.
['Buzhou Tang', 'Jingyue Hu', 'Yuxin He']
2023-06-01
null
null
null
null
['event-extraction']
['natural-language-processing']
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[9.125330924987793, 9.144476890563965]
869879dc-287b-4a47-9c83-af1138351c1d
sequential-diagnosis-prediction-with
2109.03069
null
https://arxiv.org/abs/2109.03069v1
https://arxiv.org/pdf/2109.03069v1.pdf
Sequential Diagnosis Prediction with Transformer and Ontological Representation
Sequential diagnosis prediction on the Electronic Health Record (EHR) has been proven crucial for predictive analytics in the medical domain. EHR data, sequential records of a patient's interactions with healthcare systems, has numerous inherent characteristics of temporality, irregularity and data insufficiency. Some recent works train healthcare predictive models by making use of sequential information in EHR data, but they are vulnerable to irregular, temporal EHR data with the states of admission/discharge from hospital, and insufficient data. To mitigate this, we propose an end-to-end robust transformer-based model called SETOR, which exploits neural ordinary differential equation to handle both irregular intervals between a patient's visits with admitted timestamps and length of stay in each visit, to alleviate the limitation of insufficient data by integrating medical ontology, and to capture the dependencies between the patient's visits by employing multi-layer transformer blocks. Experiments conducted on two real-world healthcare datasets show that, our sequential diagnoses prediction model SETOR not only achieves better predictive results than previous state-of-the-art approaches, irrespective of sufficient or insufficient training data, but also derives more interpretable embeddings of medical codes. The experimental codes are available at the GitHub repository (https://github.com/Xueping/SETOR).
['Jing Jiang', 'Sen Wang', 'Tao Shen', 'Guodong Long', 'Xueping Peng']
2021-09-07
null
null
null
null
['sequential-diagnosis']
['medical']
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[7.914104461669922, 6.2550368309021]
c792e1ce-7bf3-4435-b799-8a3d50d18cb9
hierarchical-and-contrastive-representation
2304.07506
null
https://arxiv.org/abs/2304.07506v1
https://arxiv.org/pdf/2304.07506v1.pdf
Hierarchical and Contrastive Representation Learning for Knowledge-aware Recommendation
Incorporating knowledge graph into recommendation is an effective way to alleviate data sparsity. Most existing knowledge-aware methods usually perform recursive embedding propagation by enumerating graph neighbors. However, the number of nodes' neighbors grows exponentially as the hop number increases, forcing the nodes to be aware of vast neighbors under this recursive propagation for distilling the high-order semantic relatedness. This may induce more harmful noise than useful information into recommendation, leading the learned node representations to be indistinguishable from each other, that is, the well-known over-smoothing issue. To relieve this issue, we propose a Hierarchical and CONtrastive representation learning framework for knowledge-aware recommendation named HiCON. Specifically, for avoiding the exponential expansion of neighbors, we propose a hierarchical message aggregation mechanism to interact separately with low-order neighbors and meta-path-constrained high-order neighbors. Moreover, we also perform cross-order contrastive learning to enforce the representations to be more discriminative. Extensive experiments on three datasets show the remarkable superiority of HiCON over state-of-the-art approaches.
['Yongji Wang', 'Bei guan', 'Daoguang Zan', 'Yangyuxuan Kang', 'Bingchao Wu']
2023-04-15
null
null
null
null
['knowledge-aware-recommendation']
['miscellaneous']
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[10.243395805358887, 5.664527416229248]
c2b75b59-6b9c-4483-b2ef-efe6c24940ae
generalized-product-of-experts-for-learning
2211.03587
null
https://arxiv.org/abs/2211.03587v1
https://arxiv.org/pdf/2211.03587v1.pdf
Generalized Product-of-Experts for Learning Multimodal Representations in Noisy Environments
A real-world application or setting involves interaction between different modalities (e.g., video, speech, text). In order to process the multimodal information automatically and use it for an end application, Multimodal Representation Learning (MRL) has emerged as an active area of research in recent times. MRL involves learning reliable and robust representations of information from heterogeneous sources and fusing them. However, in practice, the data acquired from different sources are typically noisy. In some extreme cases, a noise of large magnitude can completely alter the semantics of the data leading to inconsistencies in the parallel multimodal data. In this paper, we propose a novel method for multimodal representation learning in a noisy environment via the generalized product of experts technique. In the proposed method, we train a separate network for each modality to assess the credibility of information coming from that modality, and subsequently, the contribution from each modality is dynamically varied while estimating the joint distribution. We evaluate our method on two challenging benchmarks from two diverse domains: multimodal 3D hand-pose estimation and multimodal surgical video segmentation. We attain state-of-the-art performance on both benchmarks. Our extensive quantitative and qualitative evaluations show the advantages of our method compared to previous approaches.
['Danail Stoyanov', 'Ashutosh Modi', 'Binod Bhattarai', 'Jinang Shah', 'Naman Gupta', 'Abhinav Joshi']
2022-11-07
null
null
null
null
['3d-hand-pose-estimation', '3d-hand-pose-estimation']
['computer-vision', 'graphs']
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[12.949098587036133, 4.856298446655273]
e9232959-f946-4541-a746-bc36eac7ba48
contrastive-deep-supervision
2207.05306
null
https://arxiv.org/abs/2207.05306v1
https://arxiv.org/pdf/2207.05306v1.pdf
Contrastive Deep Supervision
The success of deep learning is usually accompanied by the growth in neural network depth. However, the traditional training method only supervises the neural network at its last layer and propagates the supervision layer-by-layer, which leads to hardship in optimizing the intermediate layers. Recently, deep supervision has been proposed to add auxiliary classifiers to the intermediate layers of deep neural networks. By optimizing these auxiliary classifiers with the supervised task loss, the supervision can be applied to the shallow layers directly. However, deep supervision conflicts with the well-known observation that the shallow layers learn low-level features instead of task-biased high-level semantic features. To address this issue, this paper proposes a novel training framework named Contrastive Deep Supervision, which supervises the intermediate layers with augmentation-based contrastive learning. Experimental results on nine popular datasets with eleven models demonstrate its effects on general image classification, fine-grained image classification and object detection in supervised learning, semi-supervised learning and knowledge distillation. Codes have been released in Github.
['Kaisheng Ma', 'Runpei Dong', 'Junbo Zhang', 'Xin Chen', 'Linfeng Zhang']
2022-07-12
null
null
null
null
['fine-grained-image-classification']
['computer-vision']
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[9.487485885620117, 2.4082868099212646]
117a3240-9eae-400d-9c91-98ab97c52b66
asr-and-emotional-speech-a-word-level
2305.16065
null
https://arxiv.org/abs/2305.16065v2
https://arxiv.org/pdf/2305.16065v2.pdf
ASR and Emotional Speech: A Word-Level Investigation of the Mutual Impact of Speech and Emotion Recognition
In Speech Emotion Recognition (SER), textual data is often used alongside audio signals to address their inherent variability. However, the reliance on human annotated text in most research hinders the development of practical SER systems. To overcome this challenge, we investigate how Automatic Speech Recognition (ASR) performs on emotional speech by analyzing the ASR performance on emotion corpora and examining the distribution of word errors and confidence scores in ASR transcripts to gain insight into how emotion affects ASR. We utilize four ASR systems, namely Kaldi ASR, wav2vec2, Conformer, and Whisper, and three corpora: IEMOCAP, MOSI, and MELD to ensure generalizability. Additionally, we conduct text-based SER on ASR transcripts with increasing word error rates to investigate how ASR affects SER. The objective of this study is to uncover the relationship and mutual impact of ASR and SER, in order to facilitate ASR adaptation to emotional speech and the use of SER in real world.
['Catherine Lai', 'Peter Bell', 'Ondrej Klejch', 'Zeyu Zhao', 'Yuanchao Li']
2023-05-25
null
null
null
null
['automatic-speech-recognition', 'speech-emotion-recognition']
['speech', 'speech']
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[13.64093017578125, 5.836283206939697]
27131225-591c-4860-8e01-c7dfd24e00da
atrial-fibrillation-detection-using-deep
1903.11775
null
http://arxiv.org/abs/1903.11775v1
http://arxiv.org/pdf/1903.11775v1.pdf
Atrial Fibrillation Detection Using Deep Features and Convolutional Networks
Atrial fibrillation is a cardiac arrhythmia that affects an estimated 33.5 million people globally and is the potential cause of 1 in 3 strokes in people over the age of 60. Detection and diagnosis of atrial fibrillation (AFIB) is done noninvasively in the clinical environment through the evaluation of electrocardiograms (ECGs). Early research into automated methods for the detection of AFIB in ECG signals focused on traditional bio-medical signal analysis to extract important features for use in statistical classification models. Artificial intelligence models have more recently been used that employ convolutional and/or recurrent network architectures. In this work, significant time and frequency domain characteristics of the ECG signal are extracted by applying the short-time Fourier trans-form and then visually representing the information in a spectrogram. Two different classification approaches were investigated that utilized deep features in the spectrograms construct-ed from ECG segments. The first approach used a pretrained DenseNet model to extract features that were then classified using Support Vector Machines, and the second approach used the spectrograms as direct input into a convolutional network. Both approaches were evaluated against the MIT-BIH AFIB dataset, where the convolutional network approach achieved a classification accuracy of 93.16%. While these results do not surpass established automated atrial fibrillation detection methods, they are promising and warrant further investigation given they did not require any noise prefiltering, hand-crafted features, nor a reliance on beat detection.
['Sara Ross-Howe', 'H. R. Tizhoosh']
2019-03-28
null
null
null
null
['arrhythmia-detection', 'atrial-fibrillation-detection', 'electrocardiography-ecg']
['medical', 'medical', 'methodology']
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[14.294002532958984, 3.280867099761963]
ab751077-cf0e-43f5-a18f-2eb8992c44fe
detecting-the-open-world-objects-with-the
2303.11623
null
https://arxiv.org/abs/2303.11623v1
https://arxiv.org/pdf/2303.11623v1.pdf
Detecting the open-world objects with the help of the Brain
Open World Object Detection (OWOD) is a novel computer vision task with a considerable challenge, bridging the gap between classic object detection (OD) benchmarks and real-world object detection. In addition to detecting and classifying seen/known objects, OWOD algorithms are expected to detect unseen/unknown objects and incrementally learn them. The natural instinct of humans to identify unknown objects in their environments mainly depends on their brains' knowledge base. It is difficult for a model to do this only by learning from the annotation of several tiny datasets. The large pre-trained grounded language-image models - VL (\ie GLIP) have rich knowledge about the open world but are limited to the text prompt. We propose leveraging the VL as the ``Brain'' of the open-world detector by simply generating unknown labels. Leveraging it is non-trivial because the unknown labels impair the model's learning of known objects. In this paper, we alleviate these problems by proposing the down-weight loss function and decoupled detection structure. Moreover, our detector leverages the ``Brain'' to learn novel objects beyond VL through our pseudo-labeling scheme.
['Thomas H. Li', 'Enming Zhang', 'Jiaqi Fan', 'Zhixiang Ye', 'Peihao Chen', 'Ying WEI', 'Yuefeng Wang', 'Shuailei Ma']
2023-03-21
null
null
null
null
['open-world-object-detection']
['computer-vision']
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[9.491948127746582, 1.5720456838607788]
7cea3d9c-af50-4887-9361-d83f7db42c3b
profiling-entity-matching-benchmark-tasks
null
null
https://dl.acm.org/doi/10.1145/3340531.3412781
https://dl.acm.org/doi/pdf/10.1145/3340531.3412781
Profiling Entity Matching Benchmark Tasks
Entity matching is a central task in data integration which has been researched for decades. Over this time, a wide range of benchmark tasks for evaluating entity matching methods has been developed. This resource paper systematically complements, profiles, and compares 21 entity matching benchmark tasks. In order to better understand the specific challenges associated with different tasks, we define a set of profiling dimensions which capture central aspects of the matching tasks. Using these dimensions, we create groups of benchmark tasks having similar characteristics. Afterwards, we assess the difficulty of the tasks in each group by computing baseline evaluation results using standard feature engineering together with two common classification methods. In order to enable the exact reproducibility of evaluation results, matching tasks need to contain exactly defined sets of matching and non-matching record pairs, as well as a fixed development and test split. As this is not the case for some widely-used benchmark tasks, we complement these tasks with fixed sets of non-matching pairs, as well as fixed splits, and provide the resulting development and test sets for public download. By profiling and complementing the benchmark tasks, we support researchers to select challenging as well as diverse tasks and to compare matching systems on clearly defined grounds.
['Christian Bizer', 'Anna Primpeli']
2020-10-19
null
null
null
international-conference-on-information-2
['data-integration', 'entity-resolution']
['knowledge-base', 'natural-language-processing']
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[9.488061904907227, 8.438007354736328]
bbee712a-b697-4cfc-80b6-558ee0ab783c
hierarchical-video-moment-retrieval-and-step
2303.16406
null
https://arxiv.org/abs/2303.16406v1
https://arxiv.org/pdf/2303.16406v1.pdf
Hierarchical Video-Moment Retrieval and Step-Captioning
There is growing interest in searching for information from large video corpora. Prior works have studied relevant tasks, such as text-based video retrieval, moment retrieval, video summarization, and video captioning in isolation, without an end-to-end setup that can jointly search from video corpora and generate summaries. Such an end-to-end setup would allow for many interesting applications, e.g., a text-based search that finds a relevant video from a video corpus, extracts the most relevant moment from that video, and segments the moment into important steps with captions. To address this, we present the HiREST (HIerarchical REtrieval and STep-captioning) dataset and propose a new benchmark that covers hierarchical information retrieval and visual/textual stepwise summarization from an instructional video corpus. HiREST consists of 3.4K text-video pairs from an instructional video dataset, where 1.1K videos have annotations of moment spans relevant to text query and breakdown of each moment into key instruction steps with caption and timestamps (totaling 8.6K step captions). Our hierarchical benchmark consists of video retrieval, moment retrieval, and two novel moment segmentation and step captioning tasks. In moment segmentation, models break down a video moment into instruction steps and identify start-end boundaries. In step captioning, models generate a textual summary for each step. We also present starting point task-specific and end-to-end joint baseline models for our new benchmark. While the baseline models show some promising results, there still exists large room for future improvement by the community. Project website: https://hirest-cvpr2023.github.io
['Mohit Bansal', 'Yasher Mehdad', 'Barlas Oğuz', 'Xilun Chen', 'Satwik Kottur', 'Jaemin Cho', 'Abhay Zala']
2023-03-29
null
http://openaccess.thecvf.com//content/CVPR2023/html/Zala_Hierarchical_Video-Moment_Retrieval_and_Step-Captioning_CVPR_2023_paper.html
http://openaccess.thecvf.com//content/CVPR2023/papers/Zala_Hierarchical_Video-Moment_Retrieval_and_Step-Captioning_CVPR_2023_paper.pdf
cvpr-2023-1
['video-captioning', 'moment-retrieval', 'video-retrieval']
['computer-vision', 'computer-vision', 'computer-vision']
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[10.323317527770996, 0.6943582892417908]
eef01024-29e5-49b7-a615-4e607e649a83
dynamic-knowledge-graphs-as-semantic-memory
2101.01099
null
https://arxiv.org/abs/2101.01099v3
https://arxiv.org/pdf/2101.01099v3.pdf
Dynamic Knowledge Graphs as Semantic Memory Model for Industrial Robots
In this paper, we present a model for semantic memory that allows machines to collect information and experiences to become more proficient with time. Post semantic analysis of the sensory and other related data, the processed information is stored in the knowledge graph which is then used to comprehend the work instructions expressed in natural language. This imparts industrial robots cognitive behavior to execute the required tasks in a deterministic manner. The paper outlines the architecture of the system along with an implementation of the proposal.
['Said Zahrai', 'Vishakh Duggal', 'Mohak Sukhwani']
2021-01-04
null
null
null
null
['industrial-robots']
['robots']
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[4.450706958770752, 1.186515212059021]
a4f7ae79-5073-4063-a88b-8f39a7b7cfba
attacking-cooperative-multi-agent
2302.03322
null
https://arxiv.org/abs/2302.03322v2
https://arxiv.org/pdf/2302.03322v2.pdf
Attacking Cooperative Multi-Agent Reinforcement Learning by Adversarial Minority Influence
This study probes the vulnerabilities of cooperative multi-agent reinforcement learning (c-MARL) under adversarial attacks, a critical determinant of c-MARL's worst-case performance prior to real-world implementation. Current observation-based attacks, constrained by white-box assumptions, overlook c-MARL's complex multi-agent interactions and cooperative objectives, resulting in impractical and limited attack capabilities. To address these shortcomes, we propose Adversarial Minority Influence (AMI), a practical and strong for c-MARL. AMI is a practical black-box attack and can be launched without knowing victim parameters. AMI is also strong by considering the complex multi-agent interaction and the cooperative goal of agents, enabling a single adversarial agent to unilaterally misleads majority victims to form targeted worst-case cooperation. This mirrors minority influence phenomena in social psychology. To achieve maximum deviation in victim policies under complex agent-wise interactions, our unilateral attack aims to characterize and maximize the impact of the adversary on the victims. This is achieved by adapting a unilateral agent-wise relation metric derived from mutual information, thereby mitigating the adverse effects of victim influence on the adversary. To lead the victims into a jointly detrimental scenario, our targeted attack deceives victims into a long-term, cooperatively harmful situation by guiding each victim towards a specific target, determined through a trial-and-error process executed by a reinforcement learning agent. Through AMI, we achieve the first successful attack against real-world robot swarms and effectively fool agents in simulated environments into collectively worst-case scenarios, including Starcraft II and Multi-agent Mujoco. The source code and demonstrations can be found at: https://github.com/DIG-Beihang/AMI.
['Xianglong Liu', 'Wenjun Wu', 'Aishan Liu', 'Xin Yu', 'Pu Feng', 'Jingqiao Xiu', 'Jun Guo', 'Simin Li']
2023-02-07
null
null
null
null
['starcraft-ii', 'continuous-control', 'smac-1', 'starcraft', 'smac']
['playing-games', 'playing-games', 'playing-games', 'playing-games', 'playing-games']
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[3.8726890087127686, 2.3897526264190674]
f13126b5-1145-4775-b1b0-e763b27dc643
towards-real-time-and-light-weight-line
2106.00186
null
https://arxiv.org/abs/2106.00186v3
https://arxiv.org/pdf/2106.00186v3.pdf
Towards Light-weight and Real-time Line Segment Detection
Previous deep learning-based line segment detection (LSD) suffers from the immense model size and high computational cost for line prediction. This constrains them from real-time inference on computationally restricted environments. In this paper, we propose a real-time and light-weight line segment detector for resource-constrained environments named Mobile LSD (M-LSD). We design an extremely efficient LSD architecture by minimizing the backbone network and removing the typical multi-module process for line prediction found in previous methods. To maintain competitive performance with a light-weight network, we present novel training schemes: Segments of Line segment (SoL) augmentation, matching and geometric loss. SoL augmentation splits a line segment into multiple subparts, which are used to provide auxiliary line data during the training process. Moreover, the matching and geometric loss allow a model to capture additional geometric cues. Compared with TP-LSD-Lite, previously the best real-time LSD method, our model (M-LSD-tiny) achieves competitive performance with 2.5% of model size and an increase of 130.5% in inference speed on GPU. Furthermore, our model runs at 56.8 FPS and 48.6 FPS on the latest Android and iPhone mobile devices, respectively. To the best of our knowledge, this is the first real-time deep LSD available on mobile devices. Our code is available.
['Minchul Shin', 'Jingeun Lee', 'Sung-Hyun Lee', 'SeoungHyun Go', 'Byungsoo Ko', 'Geonmo Gu']
2021-06-01
null
null
null
null
['line-segment-detection']
['computer-vision']
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[8.40140438079834, -1.546748399734497]
2ad1532f-69d9-45ec-a818-6ff13bcb0168
semattack-natural-textual-attacks-via
null
null
https://openreview.net/forum?id=03-jwvIDYf
https://openreview.net/pdf?id=03-jwvIDYf
SemAttack: Natural Textual Attacks via Different Semantic Spaces
Recent studies show that pre-trained language models (LMs) are vulnerable to textual adversarial attacks. However, existing attack methods either suffer from low attack success rates or fail to search efficiently in the exponentially large perturbation space. We propose an efficient and effective framework SemAttack to generate natural adversarial text by constructing different semantic perturbation functions. In particular, SemAttack optimizes the generated perturbations constrained on generic semantic spaces, including typo space, knowledge space (e.g., WordNet), contextualized semantic space (e.g., the embedding space of BERT clusterings), or the combination of these spaces. Thus, the generated adversarial texts are more semantically close to the original inputs. Extensive experiments reveal that state-of-the-art (SOTA) large-scale LMs (e.g., DeBERTa-v2) and defense strategies (e.g., FreeLB) are still vulnerable to SemAttack. We further demonstrate that SemAttack is general and able to generate natural adversarial texts for different languages (e.g., English and Chinese) with high attack success rates. Human evaluations also confirm that our generated adversarial texts are natural and barely affect human performance.
['Anonymous']
2022-01-16
null
null
null
acl-arr-january-2022-1
['adversarial-text']
['adversarial']
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[6.034061908721924, 8.11994743347168]
830fd922-6cf4-4087-9e0e-e296f2153951
coreference-strategies-in-english-german
null
null
https://aclanthology.org/2020.crac-1.15
https://aclanthology.org/2020.crac-1.15.pdf
Coreference Strategies in English-German Translation
We present a study focusing on variation of coreferential devices in English original TED talks and news texts and their German translations. Using exploratory techniques we contemplate a diverse set of coreference devices as features which we assume indicate language-specific and register-based variation as well as potential translation strategies. Our findings reflect differences on both dimensions with stronger variation along the lines of register than between languages. By exposing interactions between text type and cross-linguistic variation, they can also inform multilingual NLP applications, especially machine translation.
['Christian Hardmeier', 'Marie-Pauline Krielke', 'Ekaterina Lapshinova-Koltunski']
null
null
null
null
coling-crac-2020-12
['multilingual-nlp']
['natural-language-processing']
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[11.004838943481445, 10.04818344116211]
a8370011-6466-47c7-bb35-f0bb125b7a03
offline-experience-replay-for-continual
2305.13804
null
https://arxiv.org/abs/2305.13804v1
https://arxiv.org/pdf/2305.13804v1.pdf
Offline Experience Replay for Continual Offline Reinforcement Learning
The capability of continuously learning new skills via a sequence of pre-collected offline datasets is desired for an agent. However, consecutively learning a sequence of offline tasks likely leads to the catastrophic forgetting issue under resource-limited scenarios. In this paper, we formulate a new setting, continual offline reinforcement learning (CORL), where an agent learns a sequence of offline reinforcement learning tasks and pursues good performance on all learned tasks with a small replay buffer without exploring any of the environments of all the sequential tasks. For consistently learning on all sequential tasks, an agent requires acquiring new knowledge and meanwhile preserving old knowledge in an offline manner. To this end, we introduced continual learning algorithms and experimentally found experience replay (ER) to be the most suitable algorithm for the CORL problem. However, we observe that introducing ER into CORL encounters a new distribution shift problem: the mismatch between the experiences in the replay buffer and trajectories from the learned policy. To address such an issue, we propose a new model-based experience selection (MBES) scheme to build the replay buffer, where a transition model is learned to approximate the state distribution. This model is used to bridge the distribution bias between the replay buffer and the learned model by filtering the data from offline data that most closely resembles the learned model for storage. Moreover, in order to enhance the ability on learning new tasks, we retrofit the experience replay method with a new dual behavior cloning (DBC) architecture to avoid the disturbance of behavior-cloning loss on the Q-learning process. In general, we call our algorithm offline experience replay (OER). Extensive experiments demonstrate that our OER method outperforms SOTA baselines in widely-used Mujoco environments.
['Li He', 'Donglin Wang', 'Sibo Gai']
2023-05-23
null
null
null
null
['q-learning']
['methodology']
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[4.101278305053711, 2.1355297565460205]
4227fb78-9650-4fc0-bff5-d78933b5053e
planematch-patch-coplanarity-prediction-for
1803.08407
null
http://arxiv.org/abs/1803.08407v3
http://arxiv.org/pdf/1803.08407v3.pdf
PlaneMatch: Patch Coplanarity Prediction for Robust RGB-D Reconstruction
We introduce a novel RGB-D patch descriptor designed for detecting coplanar surfaces in SLAM reconstruction. The core of our method is a deep convolutional neural net that takes in RGB, depth, and normal information of a planar patch in an image and outputs a descriptor that can be used to find coplanar patches from other images.We train the network on 10 million triplets of coplanar and non-coplanar patches, and evaluate on a new coplanarity benchmark created from commodity RGB-D scans. Experiments show that our learned descriptor outperforms alternatives extended for this new task by a significant margin. In addition, we demonstrate the benefits of coplanarity matching in a robust RGBD reconstruction formulation.We find that coplanarity constraints detected with our method are sufficient to get reconstruction results comparable to state-of-the-art frameworks on most scenes, but outperform other methods on standard benchmarks when combined with a simple keypoint method.
['Thomas Funkhouser', 'Szymon Rusinkiewicz', 'Matthias Niessner', 'Kai Xu', 'Yifei Shi']
2018-03-22
planematch-patch-coplanarity-prediction-for-1
http://openaccess.thecvf.com/content_ECCV_2018/html/Yifei_Shi_PlaneMatch_Patch_Coplanarity_ECCV_2018_paper.html
http://openaccess.thecvf.com/content_ECCV_2018/papers/Yifei_Shi_PlaneMatch_Patch_Coplanarity_ECCV_2018_paper.pdf
eccv-2018-9
['rgb-d-reconstruction']
['computer-vision']
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[7.8477630615234375, -2.7618274688720703]
22e93af1-cd5c-40dc-9984-d6ff05a174b2
adversarial-text-normalization
2206.04137
null
https://arxiv.org/abs/2206.04137v1
https://arxiv.org/pdf/2206.04137v1.pdf
Adversarial Text Normalization
Text-based adversarial attacks are becoming more commonplace and accessible to general internet users. As these attacks proliferate, the need to address the gap in model robustness becomes imminent. While retraining on adversarial data may increase performance, there remains an additional class of character-level attacks on which these models falter. Additionally, the process to retrain a model is time and resource intensive, creating a need for a lightweight, reusable defense. In this work, we propose the Adversarial Text Normalizer, a novel method that restores baseline performance on attacked content with low computational overhead. We evaluate the efficacy of the normalizer on two problem areas prone to adversarial attacks, i.e. Hate Speech and Natural Language Inference. We find that text normalization provides a task-agnostic defense against character-level attacks that can be implemented supplementary to adversarial retraining solutions, which are more suited for semantic alterations.
['Ivan Evtimov', 'Maya Pavlova', 'Joanna Bitton']
2022-06-08
null
https://aclanthology.org/2022.naacl-industry.30
https://aclanthology.org/2022.naacl-industry.30.pdf
naacl-acl-2022-7
['adversarial-text']
['adversarial']
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[6.036111354827881, 8.091459274291992]
a964d5b9-d4ce-4794-93cb-03c02ed249ec
annobert-effectively-representing-multiple
2212.10405
null
https://arxiv.org/abs/2212.10405v2
https://arxiv.org/pdf/2212.10405v2.pdf
AnnoBERT: Effectively Representing Multiple Annotators' Label Choices to Improve Hate Speech Detection
Supervised approaches generally rely on majority-based labels. However, it is hard to achieve high agreement among annotators in subjective tasks such as hate speech detection. Existing neural network models principally regard labels as categorical variables, while ignoring the semantic information in diverse label texts. In this paper, we propose AnnoBERT, a first-of-its-kind architecture integrating annotator characteristics and label text with a transformer-based model to detect hate speech, with unique representations based on each annotator's characteristics via Collaborative Topic Regression (CTR) and integrate label text to enrich textual representations. During training, the model associates annotators with their label choices given a piece of text; during evaluation, when label information is not available, the model predicts the aggregated label given by the participating annotators by utilising the learnt association. The proposed approach displayed an advantage in detecting hate speech, especially in the minority class and edge cases with annotator disagreement. Improvement in the overall performance is the largest when the dataset is more label-imbalanced, suggesting its practical value in identifying real-world hate speech, as the volume of hate speech in-the-wild is extremely small on social media, when compared with normal (non-hate) speech. Through ablation studies, we show the relative contributions of annotator embeddings and label text to the model performance, and tested a range of alternative annotator embeddings and label text combinations.
['Nishanth Sastry', 'Arkaitz Zubiaga', 'Aiqi Jiang', 'Vibhor Agarwal', 'Wenjie Yin']
2022-12-20
null
null
null
null
['hate-speech-detection']
['natural-language-processing']
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[8.746495246887207, 10.562102317810059]
e9549742-703b-48ac-9557-cff06253aff3
deep-superpixel-based-network-for-blind-image
2110.06564
null
https://arxiv.org/abs/2110.06564v1
https://arxiv.org/pdf/2110.06564v1.pdf
Deep Superpixel-based Network for Blind Image Quality Assessment
The goal in a blind image quality assessment (BIQA) model is to simulate the process of evaluating images by human eyes and accurately assess the quality of the image. Although many approaches effectively identify degradation, they do not fully consider the semantic content in images resulting in distortion. In order to fill this gap, we propose a deep adaptive superpixel-based network, namely DSN-IQA, to assess the quality of image based on multi-scale and superpixel segmentation. The DSN-IQA can adaptively accept arbitrary scale images as input images, making the assessment process similar to human perception. The network uses two models to extract multi-scale semantic features and generate a superpixel adjacency map. These two elements are united together via feature fusion to accurately predict image quality. Experimental results on different benchmark databases demonstrate that our algorithm is highly competitive with other approaches when assessing challenging authentic image databases. Also, due to adaptive deep superpixel-based network, our model accurately assesses images with complicated distortion, much like the human eye.
['Yuxuan Wang', 'Yang Zhan.', 'Guangyi Yang']
2021-10-13
null
null
null
null
['blind-image-quality-assessment']
['computer-vision']
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[11.88250732421875, -1.8439362049102783]
5bc43591-6cb9-40d4-9181-84bcc8b20d60
biobert-a-pre-trained-biomedical-language
1901.08746
null
https://arxiv.org/abs/1901.08746v4
https://arxiv.org/pdf/1901.08746v4.pdf
BioBERT: a pre-trained biomedical language representation model for biomedical text mining
Biomedical text mining is becoming increasingly important as the number of biomedical documents rapidly grows. With the progress in natural language processing (NLP), extracting valuable information from biomedical literature has gained popularity among researchers, and deep learning has boosted the development of effective biomedical text mining models. However, directly applying the advancements in NLP to biomedical text mining often yields unsatisfactory results due to a word distribution shift from general domain corpora to biomedical corpora. In this article, we investigate how the recently introduced pre-trained language model BERT can be adapted for biomedical corpora. We introduce BioBERT (Bidirectional Encoder Representations from Transformers for Biomedical Text Mining), which is a domain-specific language representation model pre-trained on large-scale biomedical corpora. With almost the same architecture across tasks, BioBERT largely outperforms BERT and previous state-of-the-art models in a variety of biomedical text mining tasks when pre-trained on biomedical corpora. While BERT obtains performance comparable to that of previous state-of-the-art models, BioBERT significantly outperforms them on the following three representative biomedical text mining tasks: biomedical named entity recognition (0.62% F1 score improvement), biomedical relation extraction (2.80% F1 score improvement) and biomedical question answering (12.24% MRR improvement). Our analysis results show that pre-training BERT on biomedical corpora helps it to understand complex biomedical texts. We make the pre-trained weights of BioBERT freely available at https://github.com/naver/biobert-pretrained, and the source code for fine-tuning BioBERT available at https://github.com/dmis-lab/biobert.
['Wonjin Yoon', 'Jinhyuk Lee', 'Sunkyu Kim', 'Sungdong Kim', 'Jaewoo Kang', 'Chan Ho So', 'Donghyeon Kim']
2019-01-25
null
null
null
null
['medical-relation-extraction', 'drug-drug-interaction-extraction', 'medical-named-entity-recognition']
['medical', 'natural-language-processing', 'natural-language-processing']
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[8.529837608337402, 8.70948600769043]
1ea8342d-3fa1-4b25-b06d-89582ae30d98
interrupt-me-politely-recommending-products
null
null
https://aclanthology.org/2020.ecomnlp-1.4
https://aclanthology.org/2020.ecomnlp-1.4.pdf
Interrupt me Politely: Recommending Products and Services by Joining Human Conversation
We propose a novel way of conversational recommendation, where instead of asking questions to the user to acquire their preferences; the recommender tracks their conversation with other people, including customer support agents (CSA), and joins the conversation only when it is time to introduce a recommendation. Building a recommender that joins a human conversation (RJC), we propose information extraction, discourse and argumentation analyses, as well as dialogue management techniques to compute a recommendation for a product and service that is needed by the customer, as inferred from the conversation. A special case of such conversations is considered where the customer raises his problem with CSA in an attempt to resolve it, along with receiving a recommendation for a product with features addressing this problem. We evaluate performance of RJC is in a number of human-human and human-chat bot dialogues, and demonstrate that RJC is an efficient and less intrusive way to provide high relevance and persuasive recommendations.
['Dmitry Ilvovsky', 'Boris Galitsky']
null
null
null
null
ecomnlp-coling-2020-12
['dialogue-management']
['natural-language-processing']
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[12.714344024658203, 8.381360054016113]
cfffe0f0-b0e1-4015-a407-298bdf075c83
on-the-effectiveness-of-system-api-related
1805.09563
null
https://arxiv.org/abs/1805.09563v4
https://arxiv.org/pdf/1805.09563v4.pdf
On the Effectiveness of System API-Related Information for Android Ransomware Detection
Ransomware constitutes a significant threat to the Android operating system. It can either lock or encrypt the target devices, and victims are forced to pay ransoms to restore their data. Hence, the prompt detection of such attacks has a priority in comparison to other malicious threats. Previous works on Android malware detection mainly focused on Machine Learning-oriented approaches that were tailored to identifying malware families, without a clear focus on ransomware. More specifically, such approaches resorted to complex information types such as permissions, user-implemented API calls, and native calls. However, this led to significant drawbacks concerning complexity, resilience against obfuscation, and explainability. To overcome these issues, in this paper, we propose and discuss learning-based detection strategies that rely on System API information. These techniques leverage the fact that ransomware attacks heavily resort to System API to perform their actions, and allow distinguishing between generic malware, ransomware and goodware. We tested three different ways of employing System API information, i.e., through packages, classes, and methods, and we compared their performances to other, more complex state-of-the-art approaches. The attained results showed that systems based on System API could detect ransomware and generic malware with very good accuracy, comparable to systems that employed more complex information. Moreover, the proposed systems could accurately detect novel samples in the wild and showed resilience against static obfuscation attempts. Finally, to guarantee early on-device detection, we developed and released on the Android platform a complete ransomware and malware detector (R-PackDroid) that employed one of the methodologies proposed in this paper.
['Fabio Martinelli', 'Corrado Aaron Visaggio', 'Giorgio Giacinto', 'Michele Scalas', 'Francesco Mercaldo', 'Davide Maiorca']
2018-05-24
null
null
null
null
['android-malware-detection']
['miscellaneous']
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[14.414223670959473, 9.676346778869629]
142544c4-8063-448c-8705-0ca1ee0d7222
expressive-talking-head-generation-with
null
null
http://openaccess.thecvf.com//content/CVPR2022/html/Liang_Expressive_Talking_Head_Generation_With_Granular_Audio-Visual_Control_CVPR_2022_paper.html
http://openaccess.thecvf.com//content/CVPR2022/papers/Liang_Expressive_Talking_Head_Generation_With_Granular_Audio-Visual_Control_CVPR_2022_paper.pdf
Expressive Talking Head Generation With Granular Audio-Visual Control
Generating expressive talking heads is essential for creating virtual humans. However, existing one- or few-shot methods focus on lip-sync and head motion, ignoring the emotional expressions that make talking faces realistic. In this paper, we propose the Granularly Controlled Audio-Visual Talking Heads (GC-AVT), which controls lip movements, head poses, and facial expressions of a talking head in a granular manner. Our insight is to decouple the audio-visual driving sources through prior-based pre-processing designs. Detailedly, we disassemble the driving image into three complementary parts including: 1) a cropped mouth that facilitates lip-sync; 2) a masked head that implicitly learns pose; and 3) the upper face which works corporately and complementarily with a time-shifted mouth to contribute the expression. Interestingly, the encoded features from the three sources are integrally balanced through reconstruction training. Extensive experiments show that our method generates expressive faces with not only synced mouth shapes, controllable poses, but precisely animated emotional expressions as well.
['Jingdong Wang', 'Errui Ding', 'Jingtuo Liu', 'Junyu Han', 'Xiaoguang Han', 'Zhibin Hong', 'Hang Zhou', 'Zhizhi Guo', 'Yan Pan', 'Borong Liang']
2022-01-01
null
null
null
cvpr-2022-1
['talking-head-generation']
['computer-vision']
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[13.225805282592773, -0.46099555492401123]
36ea9a51-913e-4b91-b1ab-efaac42e6c85
twitter-geolocation-using-knowledge-based
null
null
https://aclanthology.org/W18-6102
https://aclanthology.org/W18-6102.pdf
Twitter Geolocation using Knowledge-Based Methods
Automatic geolocation of microblog posts from their text content is particularly difficult because many location-indicative terms are rare terms, notably entity names such as locations, people or local organisations. Their low frequency means that key terms observed in testing are often unseen in training, such that standard classifiers are unable to learn weights for them. We propose a method for reasoning over such terms using a knowledge base, through exploiting their relations with other entities. Our technique uses a graph embedding over the knowledge base, which we couple with a text representation to learn a geolocation classifier, trained end-to-end. We show that our method improves over purely text-based methods, which we ascribe to more robust treatment of low-count and out-of-vocabulary entities.
['Timothy Baldwin', 'Taro Miyazaki', 'Afshin Rahimi', 'Trevor Cohn']
2018-11-01
null
null
null
ws-2018-11
['stock-market-prediction']
['time-series']
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[9.284517288208008, 8.392631530761719]
311596bf-115b-4bff-b6da-1156e7c46086
from-synsets-to-videos-enriching-italwordnet
null
null
https://aclanthology.org/L14-1559
https://aclanthology.org/L14-1559.pdf
From Synsets to Videos: Enriching ItalWordNet Multimodally
The paper describes the multimodal enrichment of ItalWordNet action verbsÂ’ entries by means of an automatic mapping with an ontology of action types instantiated by video scenes (ImagAct). The two resources present important differences as well as interesting complementary features, such that a mapping of these two resources can lead to a an enrichment of IWN, through the connection between synsets and videos apt to illustrate the meaning described by glosses. Here, we describe an approach inspired by ontology matching methods for the automatic mapping of ImagAct video scened onto ItalWordNet sense. The experiments described in the paper are conducted on Italian, but the same methodology can be extended to other languages for which WordNets have been created, since ImagAct is done also for English, Chinese and Spanish. This source of multimodal information can be exploited to design second language learning tools, as well as for language grounding in video action recognition and potentially for robotics.
['Valeria Quochi', 'Monica Monachini', 'Irene Russo', 'Irene De Felice', 'Roberto Bartolini']
2014-05-01
null
null
null
lrec-2014-5
['ontology-matching']
['knowledge-base']
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[10.44688892364502, 0.5905734896659851]
1fdafd2c-306d-4771-b7be-bf340ec9d582
exploring-structure-wise-uncertainty-for-3d
2211.00303
null
https://arxiv.org/abs/2211.00303v1
https://arxiv.org/pdf/2211.00303v1.pdf
Exploring Structure-Wise Uncertainty for 3D Medical Image Segmentation
When applying a Deep Learning model to medical images, it is crucial to estimate the model uncertainty. Voxel-wise uncertainty is a useful visual marker for human experts and could be used to improve the model's voxel-wise output, such as segmentation. Moreover, uncertainty provides a solid foundation for out-of-distribution (OOD) detection, improving the model performance on the image-wise level. However, one of the frequent tasks in medical imaging is the segmentation of distinct, local structures such as tumors or lesions. Here, the structure-wise uncertainty allows more precise operations than image-wise and more semantic-aware than voxel-wise. The way to produce uncertainty for individual structures remains poorly explored. We propose a framework to measure the structure-wise uncertainty and evaluate the impact of OOD data on the model performance. Thus, we identify the best UE method to improve the segmentation quality. The proposed framework is tested on three datasets with the tumor segmentation task: LIDC-IDRI, LiTS, and a private one with multiple brain metastases cases.
['Boris Shirokikh', 'Mikhail Belyaev', 'Daria Frolova', 'Anton Vasiliuk']
2022-11-01
null
null
null
null
['tumor-segmentation']
['computer-vision']
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[14.415485382080078, -2.0882089138031006]
1351cc8e-92fe-42ff-818a-b7ca5bbcada7
text-based-rl-agents-with-commonsense-1
null
null
https://openreview.net/forum?id=Aws7Sgnej4G
https://openreview.net/pdf?id=Aws7Sgnej4G
Text-based RL Agents with Commonsense Knowledge: New Challenges, Environments and Approaches
Text-based games have emerged as an important test-bed for Reinforcement Learning (RL) research, requiring RL agents to combine grounded language understanding with sequential decision making. In this paper, we examine the problem of infusing RL agents with commonsense knowledge. This allows agents to efficiently act in the world by pruning out implausible actions, and to perform look-ahead planning to determine how current actions might affect future world states. We design a new text-based gaming environment called TextWorld Commonsense (TWC) for training and evaluating RL agents with a specific kind of commonsense knowledge about objects, their attributes, and affordances. We introduce a number of RL agents that combine the sequential context with a dynamic graph representation of their beliefs of the world and commonsense knowledge from ConceptNet in different ways. We show that our agents act efficiently (fewer moves) and achieve better scores, and that learned policies can be transferred to other instances in TWC.
['Murray Campbell', 'Mrinmaya Sachan', 'Kartik Talamadupula', 'Gerald Tesauro', 'Sadhana Kumaravel', 'Pushkar Shukla', 'Pavan Kapanipathi', 'Mattia Atzeni', 'Keerthiram Murugesan']
2020-07-12
null
null
null
null
['text-based-games']
['playing-games']
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[3.886899471282959, 1.221832275390625]
57624eb1-5721-47b3-a6b2-5e9dc654059c
preservation-of-anomalous-subgroups-on
1911.03674
null
https://arxiv.org/abs/1911.03674v1
https://arxiv.org/pdf/1911.03674v1.pdf
Preservation of Anomalous Subgroups On Machine Learning Transformed Data
In this paper, we investigate the effect of machine learning based anonymization on anomalous subgroup preservation. In particular, we train a binary classifier to discover the most anomalous subgroup in a dataset by maximizing the bias between the group's predicted odds ratio from the model and observed odds ratio from the data. We then perform anonymization using a variational autoencoder (VAE) to synthesize an entirely new dataset that would ideally be drawn from the distribution of the original data. We repeat the anomalous subgroup discovery task on the new data and compare it to what was identified pre-anonymization. We evaluated our approach using publicly available datasets from the financial industry. Our evaluation confirmed that the approach was able to produce synthetic datasets that preserved a high level of subgroup differentiation as identified initially in the original dataset. Such a distinction was maintained while having distinctly different records between the synthetic and original dataset. Finally, we packed the above end to end process into what we call Utility Guaranteed Deep Privacy (UGDP) system. UGDP can be easily extended to onboard alternative generative approaches such as GANs to synthesize tabular data.
['Robert-Florian Samoilescu', 'Reginald E. Bryant', 'Kush R. Varshney', 'William O. Goal', 'Samuel C. Maina', 'Komminist Weldemariam']
2019-11-09
null
null
null
null
['subgroup-discovery']
['methodology']
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[6.190451145172119, 6.8487420082092285]
c9f9f2af-9070-4699-9d44-d8c2a52a3595
optimal-multi-agent-path-finding-for
2202.10449
null
https://arxiv.org/abs/2202.10449v1
https://arxiv.org/pdf/2202.10449v1.pdf
Optimal Multi-Agent Path Finding for Precedence Constrained Planning Tasks
Multi-Agent Path Finding (MAPF) is the problem of finding collision-free paths for multiple agents from their start locations to end locations. We consider an extension to this problem, Precedence Constrained Multi-Agent Path Finding (PC-MAPF), wherein agents are assigned a sequence of planning tasks that contain precedence constraints between them. PC-MAPF has various applications, for example in multi-agent pickup and delivery problems where some objects might require multiple agents to collaboratively pickup and move them in unison. Precedence constraints also arise in warehouse assembly problems where before a manufacturing task can begin, its input resources must be manufactured and delivered. We propose a novel algorithm, Precedence Constrained Conflict Based Search (PC-CBS), which finds makespan-optimal solutions for this class of problems. PC-CBS utilizes a Precedence-Constrained Task-Graph to define valid intervals for each planning task and updates them when precedence conflicts are encountered. We benchmark the performance of this algorithm over various warehouse assembly, and multi-agent pickup and delivery tasks, and use it to evaluate the sub-optimality of a recently proposed efficient baseline.
['Partha Pratim Chakrabarti', 'Aritra Hazra', 'Rajat Kumar Jenamani', 'Kushal Kedia']
2022-02-08
null
null
null
null
['multi-agent-path-finding']
['playing-games']
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[4.965420246124268, 1.7447339296340942]
8e84cb96-709f-4b8d-ab7f-13748728eb7b
tragedy-plus-time-capturing-unintended-human
2204.13548
null
https://arxiv.org/abs/2204.13548v1
https://arxiv.org/pdf/2204.13548v1.pdf
Tragedy Plus Time: Capturing Unintended Human Activities from Weakly-labeled Videos
In videos that contain actions performed unintentionally, agents do not achieve their desired goals. In such videos, it is challenging for computer vision systems to understand high-level concepts such as goal-directed behavior, an ability present in humans from a very early age. Inculcating this ability in artificially intelligent agents would make them better social learners by allowing them to evaluate human action under a teleological lens. To validate the ability of deep learning models to perform this task, we curate the W-Oops dataset, built upon the Oops dataset [15]. W-Oops consists of 2,100 unintentional human action videos, with 44 goal-directed and 30 unintentional video-level activity labels collected through human annotations. Due to the expensive segment annotation procedure, we propose a weakly supervised algorithm for localizing the goal-directed as well as unintentional temporal regions in the video leveraging solely video-level labels. In particular, we employ an attention mechanism-based strategy that predicts the temporal regions which contribute the most to a classification task. Meanwhile, our designed overlap regularization allows the model to focus on distinct portions of the video for inferring the goal-directed and unintentional activity while guaranteeing their temporal ordering. Extensive quantitative experiments verify the validity of our localization method. We further conduct a video captioning experiment which demonstrates that the proposed localization module does indeed assist teleological action understanding.
['Yezhou Yang', 'Zhiyuan Fang', 'Arnav Chakravarthy']
2022-04-28
null
null
null
null
['action-understanding']
['computer-vision']
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[8.512505531311035, 0.7234265208244324]
6b1e8da7-cf1c-4a2c-92e9-770b51ca12a7
robust-image-protection-countering-cropping
2206.02405
null
https://arxiv.org/abs/2206.02405v5
https://arxiv.org/pdf/2206.02405v5.pdf
Image Protection for Robust Cropping Localization and Recovery
Existing image cropping detection schemes ignore that recovering the cropped-out contents can unveil the purpose of the behaved cropping attack. This paper presents \textbf{CLR}-Net, a novel image protection scheme addressing the combined challenge of image \textbf{C}ropping \textbf{L}ocalization and \textbf{R}ecovery. We first protect the original image by introducing imperceptible perturbations. Then, typical image post-processing attacks are simulated to erode the protected image. On the recipient's side, we predict the cropping mask and recover the original image. Besides, we propose a novel \textbf{F}ine-\textbf{G}rained generative \textbf{JPEG} simulator (FG-JPEG) as well as a feature alignment network to improve the real-world robustness. Comprehensive experiments prove that the quality of the recovered image and the accuracy of crop localization are both satisfactory.
['Xinpeng Zhang', 'Zhenxing Qian', 'Xiaoxiao Hu', 'Sheng Li', 'Hang Zhou', 'Qichao Ying']
2022-06-06
null
null
null
null
['image-cropping']
['computer-vision']
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[4.451807022094727, 8.006694793701172]
385998e2-adc1-4161-ad74-39b554845f34
unconstrained-face-sketch-synthesis-via
2112.01019
null
https://arxiv.org/abs/2112.01019v1
https://arxiv.org/pdf/2112.01019v1.pdf
Unconstrained Face Sketch Synthesis via Perception-Adaptive Network and A New Benchmark
Face sketch generation has attracted much attention in the field of visual computing. However, existing methods either are limited to constrained conditions or heavily rely on various preprocessing steps to deal with in-the-wild cases. In this paper, we argue that accurately perceiving facial region and facial components is crucial for unconstrained sketch synthesis. To this end, we propose a novel Perception-Adaptive Network (PANet), which can generate high-quality face sketches under unconstrained conditions in an end-to-end scheme. Specifically, our PANet is composed of i) a Fully Convolutional Encoder for hierarchical feature extraction, ii) a Face-Adaptive Perceiving Decoder for extracting potential facial region and handling face variations, and iii) a Component-Adaptive Perceiving Module for facial component aware feature representation learning. To facilitate further researches of unconstrained face sketch synthesis, we introduce a new benchmark termed WildSketch, which contains 800 pairs of face photo-sketch with large variations in pose, expression, ethnic origin, background, and illumination. Extensive experiments demonstrate that the proposed method is capable of achieving state-of-the-art performance under both constrained and unconstrained conditions. Our source codes and the WildSketch benchmark are resealed on the project page http://lingboliu.com/unconstrained_face_sketch.html.
['Wenxiong Kang', 'Zhengtao Wu', 'Lingbo Liu', 'Lin Nie']
2021-12-02
null
null
null
null
['face-sketch-synthesis']
['computer-vision']
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[12.567315101623535, -0.08340821415185928]
afa0c052-48b0-4253-be28-631b3415453d
an-approach-for-adaptive-automatic-threat
1903.10604
null
https://arxiv.org/abs/1903.10604v2
https://arxiv.org/pdf/1903.10604v2.pdf
An Approach for Adaptive Automatic Threat Recognition Within 3D Computed Tomography Images for Baggage Security Screening
The screening of baggage using X-ray scanners is now routine in aviation security with automatic threat detection approaches, based on 3D X-ray computed tomography (CT) images, known as Automatic Threat Recognition (ATR) within the aviation security industry. These current strategies use pre-defined threat material signatures in contrast to adaptability towards new and emerging threat signatures. To address this issue, the concept of adaptive automatic threat recognition (AATR) was proposed in previous work. In this paper, we present a solution to AATR based on such X-ray CT baggage scan imagery. This aims to address the issues of rapidly evolving threat signatures within the screening requirements. Ideally, the detection algorithms deployed within the security scanners should be readily adaptable to different situations with varying requirements of threat characteristics (e.g., threat material, physical properties of objects). We tackle this issue using a novel adaptive machine learning methodology with our solution consisting of a multi-scale 3D CT image segmentation algorithm, a multi-class support vector machine (SVM) classifier for object material recognition and a strategy to enable the adaptability of our approach. Experiments are conducted on both open and sequestered 3D CT baggage image datasets specifically collected for the AATR study. Our proposed approach performs well on both recognition and adaptation. Overall our approach can achieve the probability of detection around 90% with a probability of false alarm below 20%. Our AATR shows the capabilities of adapting to varying types of materials, even the unknown materials which are not available in the training data, adapting to varying required probability of detection and adapting to varying scales of the threat object.
['Toby P. Breckon', 'Qian Wang', 'Khalid N. Ismail']
2019-03-25
null
null
null
null
['material-recognition']
['computer-vision']
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[7.421346664428711, 2.0246164798736572]
cc8d7059-cf18-472d-8dec-6e691744f5cd
all-snow-removed-single-image-desnowing
null
null
http://openaccess.thecvf.com//content/ICCV2021/html/Chen_ALL_Snow_Removed_Single_Image_Desnowing_Algorithm_Using_Hierarchical_Dual-Tree_ICCV_2021_paper.html
http://openaccess.thecvf.com//content/ICCV2021/papers/Chen_ALL_Snow_Removed_Single_Image_Desnowing_Algorithm_Using_Hierarchical_Dual-Tree_ICCV_2021_paper.pdf
ALL Snow Removed: Single Image Desnowing Algorithm Using Hierarchical Dual-Tree Complex Wavelet Representation and Contradict Channel Loss
Snow is a highly complicated atmospheric phenomenon that usually contains snowflake, snow streak, and veiling effect (similar to the haze or the mist). In this literature, we propose a single image desnowing algorithm to address the diversity of snow particles in shape and size. First, to better represent the complex snow shape, we apply the dual-tree wavelet transform and propose a complex wavelet loss in the network. Second, we propose a hierarchical decomposition paradigm in our network for better understanding the different sizes of snow particles. Last, we propose a novel feature called the contradict channel (CC) for the snow scenes. We find that the regions containing the snow particles tend to have higher intensity in the CC than that in the snow-free regions. We leverage this discriminative feature to construct the contradict channel loss for improving the performance of snow removal. Moreover, due to the limitation of existing snow datasets, to simulate the snow scenarios comprehensively, we propose a large-scale dataset called Comprehensive Snow Dataset (CSD). Experimental results show that the proposed method can favorably outperform existing methods in three synthetic datasets and real-world datasets. The code and dataset are released in https://github.com/weitingchen83/ICCV2021-Single-Image-Desnowing-HDCWNet.
['Sy-Yen Kuo', 'Jian-Jiun Ding', 'I-Hsiang Chen', 'Cheng-Che Tsai', 'Cheng-Lin Hsieh', 'Hao-Yu Fang', 'Wei-Ting Chen']
2021-01-01
null
null
null
iccv-2021-1
['single-image-desnowing']
['computer-vision']
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[10.9191312789917, -3.225064277648926]
a0bf8862-9d6f-41ee-93da-0abc9debca9a
visual-deep-learning-based-explanation-for
2302.08511
null
https://arxiv.org/abs/2302.08511v1
https://arxiv.org/pdf/2302.08511v1.pdf
Visual deep learning-based explanation for neuritic plaques segmentation in Alzheimer's Disease using weakly annotated whole slide histopathological images
Quantifying the distribution and morphology of tau protein structures in brain tissues is key to diagnosing Alzheimer's Disease (AD) and its subtypes. Recently, deep learning (DL) models such as UNet have been successfully used for automatic segmentation of histopathological whole slide images (WSI) of biological tissues. In this study, we propose a DL-based methodology for semantic segmentation of tau lesions (i.e., neuritic plaques) in WSI of postmortem patients with AD. The state of the art in semantic segmentation of neuritic plaques in human WSI is very limited. Our study proposes a baseline able to generate a significant advantage for morphological analysis of these tauopathies for further stratification of AD patients. Essential discussions concerning biomarkers (ALZ50 versus AT8 tau antibodies), the imaging modality (different slide scanner resolutions), and the challenge of weak annotations are addressed within this seminal study. The analysis of the impact of context in plaque segmentation is important to understand the role of the micro-environment for reliable tau protein segmentation. In addition, by integrating visual interpretability, we are able to explain how the network focuses on a region of interest (ROI), giving additional insights to pathologists. Finally, the release of a new expert-annotated database and the code (\url{https://github.com/aramis-lab/miccai2022-stratifiad.git}) will be helpful for the scientific community to accelerate the development of new pipelines for human WSI processing in AD.
['Daniel Racoceanu', 'Lev Stimmer', 'Benoît Delatour', 'Susana Boluda', 'Léa Ingrassia', 'Mehdi Ounissi', 'Anuradha Kar', 'Gabriel Jimenez']
2023-01-13
null
null
null
null
['whole-slide-images', 'morphological-analysis']
['computer-vision', 'natural-language-processing']
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[14.11558723449707, -2.1132256984710693]
b504926b-46af-4f71-9bc4-29542d8bbad1
residual-contrastive-learning-for-joint
2106.1007
null
https://arxiv.org/abs/2106.10070v2
https://arxiv.org/pdf/2106.10070v2.pdf
Residual Contrastive Learning for Image Reconstruction: Learning Transferable Representations from Noisy Images
This paper is concerned with contrastive learning (CL) for low-level image restoration and enhancement tasks. We propose a new label-efficient learning paradigm based on residuals, residual contrastive learning (RCL), and derive an unsupervised visual representation learning framework, suitable for low-level vision tasks with noisy inputs. While supervised image reconstruction aims to minimize residual terms directly, RCL alternatively builds a connection between residuals and CL by defining a novel instance discrimination pretext task, using residuals as the discriminative feature. Our formulation mitigates the severe task misalignment between instance discrimination pretext tasks and downstream image reconstruction tasks, present in existing CL frameworks. Experimentally, we find that RCL can learn robust and transferable representations that improve the performance of various downstream tasks, such as denoising and super resolution, in comparison with recent self-supervised methods designed specifically for noisy inputs. Additionally, our unsupervised pre-training can significantly reduce annotation costs whilst maintaining performance competitive with fully-supervised image reconstruction.
['Steven McDonagh', 'Ales Leonardis', 'Eduardo Pérez-Pellitero', 'Yongxin Yang', 'Matteo Maggioni', 'Nanqing Dong']
2021-06-18
null
null
null
null
['unsupervised-pre-training']
['methodology']
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[11.209341049194336, -2.171700954437256]
119553dd-1dc6-4458-9203-80ba06cbbbb3
make-an-audio-2-temporal-enhanced-text-to
2305.18474
null
https://arxiv.org/abs/2305.18474v1
https://arxiv.org/pdf/2305.18474v1.pdf
Make-An-Audio 2: Temporal-Enhanced Text-to-Audio Generation
Large diffusion models have been successful in text-to-audio (T2A) synthesis tasks, but they often suffer from common issues such as semantic misalignment and poor temporal consistency due to limited natural language understanding and data scarcity. Additionally, 2D spatial structures widely used in T2A works lead to unsatisfactory audio quality when generating variable-length audio samples since they do not adequately prioritize temporal information. To address these challenges, we propose Make-an-Audio 2, a latent diffusion-based T2A method that builds on the success of Make-an-Audio. Our approach includes several techniques to improve semantic alignment and temporal consistency: Firstly, we use pre-trained large language models (LLMs) to parse the text into structured <event & order> pairs for better temporal information capture. We also introduce another structured-text encoder to aid in learning semantic alignment during the diffusion denoising process. To improve the performance of variable length generation and enhance the temporal information extraction, we design a feed-forward Transformer-based diffusion denoiser. Finally, we use LLMs to augment and transform a large amount of audio-label data into audio-text datasets to alleviate the problem of scarcity of temporal data. Extensive experiments show that our method outperforms baseline models in both objective and subjective metrics, and achieves significant gains in temporal information understanding, semantic consistency, and sound quality.
['Zhou Zhao', 'Zejun Ma', 'Xiang Yin', 'Jinglin Liu', 'Chen Zhang', 'Zhenhui Ye', 'Dongchao Yang', 'Rongjie Huang', 'Yi Ren', 'Jiawei Huang']
2023-05-29
null
null
null
null
['audio-generation', 'temporal-information-extraction']
['audio', 'natural-language-processing']
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[15.414769172668457, 5.650062084197998]
1cccd72a-4ab4-4cab-ba5e-d3b1212f5d41
using-a-novel-fractional-order-gradient
2205.00581
null
https://arxiv.org/abs/2205.00581v1
https://arxiv.org/pdf/2205.00581v1.pdf
Using a novel fractional-order gradient method for CNN back-propagation
Computer-aided diagnosis tools have experienced rapid growth and development in recent years. Among all, deep learning is the most sophisticated and popular tool. In this paper, researchers propose a novel deep learning model and apply it to COVID-19 diagnosis. Our model uses the tool of fractional calculus, which has the potential to improve the performance of gradient methods. To this end, the researcher proposes a fractional-order gradient method for the back-propagation of convolutional neural networks based on the Caputo definition. However, if only the first term of the infinite series of the Caputo definition is used to approximate the fractional-order derivative, the length of the memory is truncated. Therefore, the fractional-order gradient (FGD) method with a fixed memory step and an adjustable number of terms is used to update the weights of the layers. Experiments were performed on the COVIDx dataset to demonstrate fast convergence, good accuracy, and the ability to bypass the local optimal point. We also compared the performance of the developed fractional-order neural networks and Integer-order neural networks. The results confirmed the effectiveness of our proposed model in the diagnosis of COVID-19.
['Weihua Guo', 'Mohammed Alghaili', 'Talal Ahmed Ali Ali', 'Ningbo Zhu', 'Mundher Mohammed Taresh']
2022-05-01
null
null
null
null
['covid-19-detection']
['medical']
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[7.151516914367676, 3.564427137374878]
46e66172-6786-4f2e-9db5-e8837c65d2dd
learn-spelling-from-teachers-transferring
1907.06017
null
https://arxiv.org/abs/1907.06017v1
https://arxiv.org/pdf/1907.06017v1.pdf
Learn Spelling from Teachers: Transferring Knowledge from Language Models to Sequence-to-Sequence Speech Recognition
Integrating an external language model into a sequence-to-sequence speech recognition system is non-trivial. Previous works utilize linear interpolation or a fusion network to integrate external language models. However, these approaches introduce external components, and increase decoding computation. In this paper, we instead propose a knowledge distillation based training approach to integrating external language models into a sequence-to-sequence model. A recurrent neural network language model, which is trained on large scale external text, generates soft labels to guide the sequence-to-sequence model training. Thus, the language model plays the role of the teacher. This approach does not add any external component to the sequence-to-sequence model during testing. And this approach is flexible to be combined with shallow fusion technique together for decoding. The experiments are conducted on public Chinese datasets AISHELL-1 and CLMAD. Our approach achieves a character error rate of 9.3%, which is relatively reduced by 18.42% compared with the vanilla sequence-to-sequence model.
['Jian-Hua Tao', 'Zhengkun Tian', 'Zhengqi Wen', 'Jiangyan Yi', 'Ye Bai']
2019-07-13
null
null
null
null
['sequence-to-sequence-speech-recognition']
['speech']
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[14.447226524353027, 7.015989780426025]
14d90ddc-dff7-4c12-82e9-9e510beda458
efficient-machine-translation-corpus-1
2306.11838
null
https://arxiv.org/abs/2306.11838v1
https://arxiv.org/pdf/2306.11838v1.pdf
Efficient Machine Translation Corpus Generation
This paper proposes an efficient and semi-automated method for human-in-the-loop post-editing for machine translation (MT) corpus generation. The method is based on online training of a custom MT quality estimation metric on-the-fly as linguists perform post-edits. The online estimator is used to prioritize worse hypotheses for post-editing, and auto-close best hypotheses without post-editing. This way, significant improvements can be achieved in the resulting quality of post-edits at a lower cost due to reduced human involvement. The trained estimator can also provide an online sanity check mechanism for post-edits and remove the need for additional linguists to review them or work on the same hypotheses. In this paper, the effect of prioritizing with the proposed method on the resulting MT corpus quality is presented versus scheduling hypotheses randomly. As demonstrated by experiments, the proposed method improves the lifecycle of MT models by focusing the linguist effort on production samples and hypotheses, which matter most for expanding MT corpora to be used for re-training them.
['Hassan Sawaf', 'Shreyas Sharma', 'Ahmet Gunduz', 'Kamer Ali Yuksel']
2023-06-20
efficient-machine-translation-corpus
https://aclanthology.org/2022.amta-coco4mt.2
https://aclanthology.org/2022.amta-coco4mt.2.pdf
amta-2022-9
['machine-translation']
['natural-language-processing']
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[11.685892105102539, 10.258333206176758]
09ba7aef-d999-482a-95d1-9e53a3b9ee7d
coded-illumination-and-imaging-for
null
null
http://openaccess.thecvf.com/content_ECCV_2018/html/Yuta_Asano_Coded_Illumination_and_ECCV_2018_paper.html
http://openaccess.thecvf.com/content_ECCV_2018/papers/Yuta_Asano_Coded_Illumination_and_ECCV_2018_paper.pdf
Coded Illumination and Imaging for Fluorescence Based Classification
The quick detection of specific substances in objects such as produce items via non-destructive visual cues is vital to ensuring the quality and safety of consumer products. At the same time, it is well-known that the fluorescence excitation-emission characteristics of many organic objects can serve as a kind of ``fingerprint'' for detecting the presence of specific substances in classification tasks such as determining if something is safe to consume. However, conventional capture of the fluorescence excitation-emission matrix can take on the order of minutes and can only be done for point measurements. In this paper, we propose a coded illumination approach whereby light spectra are learned such that key visual fluorescent features can be easily seen for material classification. We show that under a single coded illuminant, we can capture one RGB image and perform pixel-level classifications of materials at high accuracy. This is demonstrated through effective classification of different types of honey and alcohol using real images.
['Misaki Meguro', 'Yinqiang Zheng', 'Chao Wang', 'Yuta Asano', 'Takahiro Okabe', 'Imari Sato', 'Antony Lam']
2018-09-01
null
null
null
eccv-2018-9
['material-classification']
['computer-vision']
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[10.184423446655273, -2.6007742881774902]
07c17ee8-6d4e-4e88-a985-24d1f4a95922
graph-structure-learning-for-robust-graph
2005.10203
null
https://arxiv.org/abs/2005.10203v3
https://arxiv.org/pdf/2005.10203v3.pdf
Graph Structure Learning for Robust Graph Neural Networks
Graph Neural Networks (GNNs) are powerful tools in representation learning for graphs. However, recent studies show that GNNs are vulnerable to carefully-crafted perturbations, called adversarial attacks. Adversarial attacks can easily fool GNNs in making predictions for downstream tasks. The vulnerability to adversarial attacks has raised increasing concerns for applying GNNs in safety-critical applications. Therefore, developing robust algorithms to defend adversarial attacks is of great significance. A natural idea to defend adversarial attacks is to clean the perturbed graph. It is evident that real-world graphs share some intrinsic properties. For example, many real-world graphs are low-rank and sparse, and the features of two adjacent nodes tend to be similar. In fact, we find that adversarial attacks are likely to violate these graph properties. Therefore, in this paper, we explore these properties to defend adversarial attacks on graphs. In particular, we propose a general framework Pro-GNN, which can jointly learn a structural graph and a robust graph neural network model from the perturbed graph guided by these properties. Extensive experiments on real-world graphs demonstrate that the proposed framework achieves significantly better performance compared with the state-of-the-art defense methods, even when the graph is heavily perturbed. We release the implementation of Pro-GNN to our DeepRobust repository for adversarial attacks and defenses (footnote: https://github.com/DSE-MSU/DeepRobust). The specific experimental settings to reproduce our results can be found in https://github.com/ChandlerBang/Pro-GNN.
['Xianfeng Tang', 'Wei Jin', 'Suhang Wang', 'Xiaorui Liu', 'Jiliang Tang', 'Yao Ma']
2020-05-20
null
null
null
null
['graph-structure-learning']
['graphs']
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[6.153866291046143, 7.30024528503418]
730773d2-5bea-41fd-a56a-ff69f55b927b
improving-document-level-relation-extraction
null
null
https://ieeexplore.ieee.org/abstract/document/9194547
https://conferences.computer.org/ickg/pdfs/ICKG2020-66r9RP2mQIZywMjHhQVtDI/815600a305/815600a305.pdf
Improving Document-level Relation Extraction via Contextualizing Mention Representations and Weighting Mention Pairs
Document-level relation extraction (RE) has attracted considerable attention, because a large number of relational facts are expressed in multiple sentences. Recently, encoder-aggregator based models have become promising for document-level RE. However, these models have two shortcomings: (i) they cannot obtain contextualized representations of a mention by low computational cost, when the mention is involved in different entity pairs; (ii) they ignore the different weights for the mention pairs of a target entity pair. To tackle the above two problems, in this paper, we propose a novel encoder-attender-aggregator model, which introduces two attenders between the encoder and aggregator. Specifically, a mutual attender is first employed on the selected head and tail mentions to efficiently produce contextualized mention representations. Then, an integration attender is utilized to weight the mention pairs of a target entity pair. Extensive experiments on two document-level RE datasets show that the proposed model performs better than the state-of-the-art baselines. Our codes are publicly available at "https://github.com/nefujiangping/EncAttAgg".
['Ping Jiang;Xian-Ling Mao;Binbin Bian;Heyan Huang']
2020-08-09
null
null
null
null
['document-level-relation-extraction']
['natural-language-processing']
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[9.267608642578125, 8.669413566589355]
539c882e-ef01-42ec-b9a3-237306a0c70a
automatic-sleep-stage-classification-with-1
2302.03227
null
https://arxiv.org/abs/2302.03227v1
https://arxiv.org/pdf/2302.03227v1.pdf
Automatic Sleep Stage Classification with Cross-modal Self-supervised Features from Deep Brain Signals
The detection of human sleep stages is widely used in the diagnosis and intervention of neurological and psychiatric diseases. Some patients with deep brain stimulator implanted could have their neural activities recorded from the deep brain. Sleep stage classification based on deep brain recording has great potential to provide more precise treatment for patients. The accuracy and generalizability of existing sleep stage classifiers based on local field potentials are still limited. We proposed an applicable cross-modal transfer learning method for sleep stage classification with implanted devices. This end-to-end deep learning model contained cross-modal self-supervised feature representation, self-attention, and classification framework. We tested the model with deep brain recording data from 12 patients with Parkinson's disease. The best total accuracy reached 83.2% for sleep stage classification. Results showed speech self-supervised features catch the conversion pattern of sleep stages effectively. We provide a new method on transfer learning from acoustic signals to local field potentials. This method supports an effective solution for the insufficient scale of clinical data. This sleep stage classification model could be adapted to chronic and continuous monitor sleep for Parkinson's patients in daily life, and potentially utilized for more precise treatment in deep brain-machine interfaces, such as closed-loop deep brain stimulation.
['Luming Li', 'Yanan Sui', 'Yue Chen', 'Chen Gong']
2023-02-07
null
null
null
null
['automatic-sleep-stage-classification']
['medical']
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[13.536161422729492, 3.466477394104004]
02da2dce-41d5-40a0-af68-5defa8d64f7a
black-box-dissector-towards-erasing-based
2105.00623
null
https://arxiv.org/abs/2105.00623v3
https://arxiv.org/pdf/2105.00623v3.pdf
Black-Box Dissector: Towards Erasing-based Hard-Label Model Stealing Attack
Previous studies have verified that the functionality of black-box models can be stolen with full probability outputs. However, under the more practical hard-label setting, we observe that existing methods suffer from catastrophic performance degradation. We argue this is due to the lack of rich information in the probability prediction and the overfitting caused by hard labels. To this end, we propose a novel hard-label model stealing method termed \emph{black-box dissector}, which consists of two erasing-based modules. One is a CAM-driven erasing strategy that is designed to increase the information capacity hidden in hard labels from the victim model. The other is a random-erasing-based self-knowledge distillation module that utilizes soft labels from the substitute model to mitigate overfitting. Extensive experiments on four widely-used datasets consistently demonstrate that our method outperforms state-of-the-art methods, with an improvement of at most $8.27\%$. We also validate the effectiveness and practical potential of our method on real-world APIs and defense methods. Furthermore, our method promotes other downstream tasks, \emph{i.e.}, transfer adversarial attacks.
['Feiyue Huang', 'Yan Wang', 'Rongrong Ji', 'Yongjian Wu', 'Hong Liu', 'Jie Li', 'Yixu Wang']
2021-05-03
null
https://openreview.net/forum?id=5jaqt-Hsqir
https://openreview.net/pdf?id=5jaqt-Hsqir
neurips-2021-12
['self-knowledge-distillation']
['computer-vision']
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[5.852485179901123, 7.664951801300049]
8d66d154-5e63-431d-b0e2-667e059c41a4
rescaling-egocentric-vision
2006.13256
null
https://arxiv.org/abs/2006.13256v4
https://arxiv.org/pdf/2006.13256v4.pdf
Rescaling Egocentric Vision
This paper introduces the pipeline to extend the largest dataset in egocentric vision, EPIC-KITCHENS. The effort culminates in EPIC-KITCHENS-100, a collection of 100 hours, 20M frames, 90K actions in 700 variable-length videos, capturing long-term unscripted activities in 45 environments, using head-mounted cameras. Compared to its previous version, EPIC-KITCHENS-100 has been annotated using a novel pipeline that allows denser (54% more actions per minute) and more complete annotations of fine-grained actions (+128% more action segments). This collection enables new challenges such as action detection and evaluating the "test of time" - i.e. whether models trained on data collected in 2018 can generalise to new footage collected two years later. The dataset is aligned with 6 challenges: action recognition (full and weak supervision), action detection, action anticipation, cross-modal retrieval (from captions), as well as unsupervised domain adaptation for action recognition. For each challenge, we define the task, provide baselines and evaluation metrics
['Davide Moltisanti', 'Giovanni Maria Farinella', 'Michael Wray', 'Jian Ma', 'Will Price', 'Jonathan Munro', 'Toby Perrett', 'Hazel Doughty', 'Evangelos Kazakos', 'Antonino Furnari', 'Dima Damen']
2020-06-23
null
null
null
null
['action-anticipation']
['computer-vision']
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[8.242668151855469, 0.5423344969749451]
a36e5427-4082-4296-9a9f-8a4101c2b294
automatic-speech-disentanglement-for-voice
2306.12259
null
https://arxiv.org/abs/2306.12259v1
https://arxiv.org/pdf/2306.12259v1.pdf
Automatic Speech Disentanglement for Voice Conversion using Rank Module and Speech Augmentation
Voice Conversion (VC) converts the voice of a source speech to that of a target while maintaining the source's content. Speech can be mainly decomposed into four components: content, timbre, rhythm and pitch. Unfortunately, most related works only take into account content and timbre, which results in less natural speech. Some recent works are able to disentangle speech into several components, but they require laborious bottleneck tuning or various hand-crafted features, each assumed to contain disentangled speech information. In this paper, we propose a VC model that can automatically disentangle speech into four components using only two augmentation functions, without the requirement of multiple hand-crafted features or laborious bottleneck tuning. The proposed model is straightforward yet efficient, and the empirical results demonstrate that our model can achieve a better performance than the baseline, regarding disentanglement effectiveness and speech naturalness.
['Ning Chen', 'Shijun Wang', 'Zhonghua Liu']
2023-06-21
null
null
null
null
['voice-conversion', 'disentanglement', 'voice-conversion']
['audio', 'methodology', 'speech']
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[14.934476852416992, 6.437119483947754]
11b100fb-77a0-4ec3-b21e-1235523e0b8b
predicting-emotion-from-music-videos
2202.10453
null
https://arxiv.org/abs/2202.10453v1
https://arxiv.org/pdf/2202.10453v1.pdf
Predicting emotion from music videos: exploring the relative contribution of visual and auditory information to affective responses
Although media content is increasingly produced, distributed, and consumed in multiple combinations of modalities, how individual modalities contribute to the perceived emotion of a media item remains poorly understood. In this paper we present MusicVideos (MuVi), a novel dataset for affective multimedia content analysis to study how the auditory and visual modalities contribute to the perceived emotion of media. The data were collected by presenting music videos to participants in three conditions: music, visual, and audiovisual. Participants annotated the music videos for valence and arousal over time, as well as the overall emotion conveyed. We present detailed descriptive statistics for key measures in the dataset and the results of feature importance analyses for each condition. Finally, we propose a novel transfer learning architecture to train Predictive models Augmented with Isolated modality Ratings (PAIR) and demonstrate the potential of isolated modality ratings for enhancing multimodal emotion recognition. Our results suggest that perceptions of arousal are influenced primarily by auditory information, while perceptions of valence are more subjective and can be influenced by both visual and auditory information. The dataset is made publicly available.
['Kat Agres', 'Gemma Roig', 'Dorien Herremans', 'Dimos Makris', 'Phoebe Chua']
2022-02-19
null
null
null
null
['multimodal-emotion-recognition', 'multimodal-emotion-recognition']
['computer-vision', 'speech']
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[13.305747985839844, 5.134044170379639]
322fb979-30a5-4860-bc83-786f49aa11b6
darf-boosting-radiance-fields-from-sparse
2305.19201
null
https://arxiv.org/abs/2305.19201v1
https://arxiv.org/pdf/2305.19201v1.pdf
DäRF: Boosting Radiance Fields from Sparse Inputs with Monocular Depth Adaptation
Neural radiance fields (NeRF) shows powerful performance in novel view synthesis and 3D geometry reconstruction, but it suffers from critical performance degradation when the number of known viewpoints is drastically reduced. Existing works attempt to overcome this problem by employing external priors, but their success is limited to certain types of scenes or datasets. Employing monocular depth estimation (MDE) networks, pretrained on large-scale RGB-D datasets, with powerful generalization capability would be a key to solving this problem: however, using MDE in conjunction with NeRF comes with a new set of challenges due to various ambiguity problems exhibited by monocular depths. In this light, we propose a novel framework, dubbed D\"aRF, that achieves robust NeRF reconstruction with a handful of real-world images by combining the strengths of NeRF and monocular depth estimation through online complementary training. Our framework imposes the MDE network's powerful geometry prior to NeRF representation at both seen and unseen viewpoints to enhance its robustness and coherence. In addition, we overcome the ambiguity problems of monocular depths through patch-wise scale-shift fitting and geometry distillation, which adapts the MDE network to produce depths aligned accurately with NeRF geometry. Experiments show our framework achieves state-of-the-art results both quantitatively and qualitatively, demonstrating consistent and reliable performance in both indoor and outdoor real-world datasets. Project page is available at https://ku-cvlab.github.io/DaRF/.
['Seungryong Kim', 'SungJin Cho', 'Min-Seop Kwak', 'Seokju Cho', 'Honggyu An', 'Seonghoon Park', 'Jiuhn Song']
2023-05-30
null
null
null
null
['monocular-depth-estimation', 'novel-view-synthesis']
['computer-vision', 'computer-vision']
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[9.06135082244873, -2.6754562854766846]
8742fe6b-75ed-44a4-ae1b-ff858b350c7a
disarm-detecting-the-victims-targeted-by
null
null
https://openreview.net/forum?id=Woi12EDR_fj
https://openreview.net/pdf?id=Woi12EDR_fj
DISARM: Detecting the Victims Targeted by Harmful Memes
Internet memes have emerged as an increasingly popular means of communication on the web. Although memes are typically intended to elicit humour, they have been increasingly used to spread hatred, trolling, and cyberbullying, as well as to target specific individuals, communities, or society on political, socio-cultural, and psychological grounds. While previous work has focused on detecting harmful, hateful, and offensive memes in general, identifying whom these memes attack (i.e., the `victims') remains a challenging and underexplored area. We attempt to address this problem in this paper. To this end, we create a dataset in which we annotate each meme with its victim(s) such as the name of the targeted person(s), organization(s), and community(ies). We then propose DISARM (Detecting vIctimS targeted by hARmful Memes), a framework that uses named-entity recognition and person identification to detect all entities a meme is referring to, and then, incorporates a novel contextualized multimodal deep neural network to classify whether the meme intends to harm these entities. We perform several systematic experiments on three different test sets, corresponding to entities that are (i) all seen while training, (ii) not seen as a harmful target while training, and (iii) not seen at all while training. The evaluation shows that DISARM significantly outperforms 10 unimodal and multimodal systems. Finally, we demonstrate that DISARM is interpretable and comparatively more generalizable, and that it can reduce the relative error rate of harmful target identification by up to 9% absolute over multimodal baseline systems.
['Anonymous']
2022-01-16
null
null
null
acl-arr-january-2022-1
['person-identification']
['computer-vision']
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[8.499442100524902, 10.680249214172363]
ee6b4110-69e5-4c19-be45-8e205f868e42
valuing-distributed-energy-resources-for-non
2301.06636
null
https://arxiv.org/abs/2301.06636v2
https://arxiv.org/pdf/2301.06636v2.pdf
Valuing Distributed Energy Resources for Non-Wires Alternatives
Distributed energy resources (DER) as non-wires alternatives, regardless of owner, have the potential to reduce system operating costs and delay system upgrades. However, it is difficult to determine the appropriate economic signal to incentivize DER investors to install capacity that will benefit both the DER investors and the system operator. In an attempt to determine this co-optimal price signal, we present a bilevel optimization framework for determining the least cost solution to distribution system over-loads. A key output of the framework is a spatiotemporal price signal to DER owners that simultaneously guarantees the DER owners' required rate of return and minimizes the system operation costs. The framework is demonstrated with a case by which the system operator considers utility owned battery energy storage systems, traditional system upgrades, and energy purchase from DER owners. The results show that by valuing DER for non-wires alternatives the utility owned storage system sizes can be reduced, less hardware upgrades are necessary, and upfront capital costs as well as operating costs are reduced.
['Michael E. Webber', 'Nicholas D. Laws']
2023-01-16
null
null
null
null
['bilevel-optimization']
['methodology']
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[5.647950649261475, 2.450148344039917]
e3cde8b3-691c-4fe9-a007-7095398f68bc
infrared-image-super-resolution-via
2109.0096
null
https://arxiv.org/abs/2109.00960v1
https://arxiv.org/pdf/2109.00960v1.pdf
Infrared Image Super-Resolution via Heterogeneous Convolutional WGAN
Image super-resolution is important in many fields, such as surveillance and remote sensing. However, infrared (IR) images normally have low resolution since the optical equipment is relatively expensive. Recently, deep learning methods have dominated image super-resolution and achieved remarkable performance on visible images; however, IR images have received less attention. IR images have fewer patterns, and hence, it is difficult for deep neural networks (DNNs) to learn diverse features from IR images. In this paper, we present a framework that employs heterogeneous convolution and adversarial training, namely, heterogeneous kernel-based super-resolution Wasserstein GAN (HetSRWGAN), for IR image super-resolution. The HetSRWGAN algorithm is a lightweight GAN architecture that applies a plug-and-play heterogeneous kernel-based residual block. Moreover, a novel loss function that employs image gradients is adopted, which can be applied to an arbitrary model. The proposed HetSRWGAN achieves consistently better performance in both qualitative and quantitative evaluations. According to the experimental results, the whole training process is more stable.
['Guoming Pang', 'Qi Jiang', 'Qingzhong Wang', 'Zetao Jiang', 'Yongsong Huang']
2021-09-02
null
null
null
null
['infrared-image-super-resolution']
['computer-vision']
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[10.868151664733887, -2.0071334838867188]
fad909e0-88bc-46a0-be33-898bf9064bbe
open-domain-response-generation-guided-by
null
null
https://openreview.net/forum?id=6sXWzu3pWQE
https://openreview.net/pdf?id=6sXWzu3pWQE
Open Domain Response Generation Guided by Retrieved Conversations
Open domain response generation is the task of creating a response givena user query in any topics/domain. Limited by context and referenceinformation, responses generated by current systems are often "bland"or generic. In this paper, we combine a response generation model witha retrieval system that searches for relevant utterances and responses,and extracts keywords from the retrieved results to guide the responsegeneration. Our model uses a keyword extraction module to extract twotypes of keywords in an unsupervised fashion: (1) keywords in thequery not found in the retrieved utterances (DIFFKEY),and (2) overlapping keywords among the retrieved responses(SIMKEY). Given these keywords, we use a two-stage transformer thatfirst decides where to insert the keywords in the response, and thengenerates the full response given the location of the keywords. Thekeyword extraction module and the two-stage transformer are connected ina single network, and so our system is trained end-to-end.Experimental results on Cornell Movie-Dialog corpus, Douban and Weibodemonstrate that our model outperforms state-of-the-art systems in termsof ROUGE, relevance scores and human evaluation. Source code of ourmodel is available at: ANONYMISED.
['Anonymous']
2022-01-16
null
null
null
acl-arr-january-2022-1
['keyword-extraction']
['natural-language-processing']
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[12.376802444458008, 8.005331039428711]
e804cf45-0bd8-495f-b7f6-08d7ce34cf81
counterfactual-inference-of-the-mean-outcome
2102.08975
null
https://arxiv.org/abs/2102.08975v2
https://arxiv.org/pdf/2102.08975v2.pdf
Adaptive Doubly Robust Estimator from Non-stationary Logging Policy under a Convergence of Average Probability
Adaptive experiments, including efficient average treatment effect estimation and multi-armed bandit algorithms, have garnered attention in various applications, such as social experiments, clinical trials, and online advertisement optimization. This paper considers estimating the mean outcome of an action from samples obtained in adaptive experiments. In causal inference, the mean outcome of an action has a crucial role, and the estimation is an essential task, where the average treatment effect estimation and off-policy value estimation are its variants. In adaptive experiments, the probability of choosing an action (logging policy) is allowed to be sequentially updated based on past observations. Due to this logging policy depending on the past observations, the samples are often not independent and identically distributed (i.i.d.), making developing an asymptotically normal estimator difficult. A typical approach for this problem is to assume that the logging policy converges in a time-invariant function. However, this assumption is restrictive in various applications, such as when the logging policy fluctuates or becomes zero at some periods. To mitigate this limitation, we propose another assumption that the average logging policy converges to a time-invariant function and show the doubly robust (DR) estimator's asymptotic normality. Under the assumption, the logging policy itself can fluctuate or be zero for some actions. We also show the empirical properties by simulations.
['Masahiro Kato']
2021-02-17
null
null
null
null
['counterfactual-inference']
['miscellaneous']
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[7.903348922729492, 5.171093940734863]
51974065-c261-450e-a78f-f1abfe9d1bcc
predictive-coding-based-multiscale-network
2212.11642
null
https://arxiv.org/abs/2212.11642v2
https://arxiv.org/pdf/2212.11642v2.pdf
Predictive Coding Based Multiscale Network with Encoder-Decoder LSTM for Video Prediction
We are introducing a multi-scale predictive model for video prediction here, whose design is inspired by the "Predictive Coding" theories and "Coarse to Fine" approach. As a predictive coding model, it is updated by a combination of bottom-up and top-down information flows, which is different from traditional bottom-up training style. Its advantage is to reduce the dependence on input information and improve its ability to predict and generate images. Importantly, we achieve with a multi-scale approach -- higher level neurons generate coarser predictions (lower resolution), while the lower level generate finer predictions (higher resolution). This is different from the traditional predictive coding framework in which higher level predict the activity of neurons in lower level. To improve the predictive ability, we integrate an encoder-decoder network in the LSTM architecture and share the final encoded high-level semantic information between different levels. Additionally, since the output of each network level is an RGB image, a smaller LSTM hidden state can be used to retain and update the only necessary hidden information, avoiding being mapped to an overly discrete and complex space. In this way, we can reduce the difficulty of prediction and the computational overhead. Finally, we further explore the training strategies, to address the instability in adversarial training and mismatch between training and testing in long-term prediction. Code is available at https://github.com/Ling-CF/MSPN.
['Weihua Li', 'Junpei Zhong', 'Chaofan Ling']
2022-12-22
null
null
null
null
['video-prediction']
['computer-vision']
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[11.080900192260742, -1.1839765310287476]
c39055b9-b216-4326-b43c-156c779a72f5
a-fast-evidential-approach-for-stock
2104.05204
null
https://arxiv.org/abs/2104.05204v2
https://arxiv.org/pdf/2104.05204v2.pdf
A Fast Evidential Approach for Stock Forecasting
Within the framework of evidence theory, the confidence functions of different information can be combined into a combined confidence function to solve uncertain problems. The Dempster combination rule is a classic method of fusing different information. This paper proposes a similar confidence function for the time point in the time series. The Dempster combination rule can be used to fuse the growth rate of the last time point, and finally a relatively accurate forecast data can be obtained. Stock price forecasting is a concern of economics. The stock price data is large in volume, and more accurate forecasts are required at the same time. The classic methods of time series, such as ARIMA, cannot balance forecasting efficiency and forecasting accuracy at the same time. In this paper, the fusion method of evidence theory is applied to stock price prediction. Evidence theory deals with the uncertainty of stock price prediction and improves the accuracy of prediction. At the same time, the fusion method of evidence theory has low time complexity and fast prediction processing speed.
['Fuyuan Xiao', 'Tianxiang Zhan']
2021-04-12
null
null
null
null
['stock-price-prediction']
['time-series']
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[4.741006374359131, 4.103579521179199]
a2c29424-08a1-4779-b414-6ba36769662d
seeing-by-haptic-glance-reinforcement
2102.07599
null
https://arxiv.org/abs/2102.07599v1
https://arxiv.org/pdf/2102.07599v1.pdf
Seeing by haptic glance: reinforcement learning-based 3D object Recognition
Human is able to conduct 3D recognition by a limited number of haptic contacts between the target object and his/her fingers without seeing the object. This capability is defined as `haptic glance' in cognitive neuroscience. Most of the existing 3D recognition models were developed based on dense 3D data. Nonetheless, in many real-life use cases, where robots are used to collect 3D data by haptic exploration, only a limited number of 3D points could be collected. In this study, we thus focus on solving the intractable problem of how to obtain cognitively representative 3D key-points of a target object with limited interactions between the robot and the object. A novel reinforcement learning based framework is proposed, where the haptic exploration procedure (the agent iteratively predicts the next position for the robot to explore) is optimized simultaneously with the objective 3D recognition with actively collected 3D points. As the model is rewarded only when the 3D object is accurately recognized, it is driven to find the sparse yet efficient haptic-perceptual 3D representation of the object. Experimental results show that our proposed model outperforms the state of the art models.
['Patrick Le Callet', 'Guillaume Gallot', 'Suiyi Ling', 'Kevin Riou']
2021-02-15
null
null
null
null
['3d-object-recognition']
['computer-vision']
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[5.8506951332092285, -0.8655223250389099]
9259acf0-9fcb-42b9-9262-5fc9ac7f8503
detflowtrack-3d-multi-object-tracking-based
2203.02157
null
https://arxiv.org/abs/2203.02157v1
https://arxiv.org/pdf/2203.02157v1.pdf
DetFlowTrack: 3D Multi-object Tracking based on Simultaneous Optimization of Object Detection and Scene Flow Estimation
3D Multi-Object Tracking (MOT) is an important part of the unmanned vehicle perception module. Most methods optimize object detection and data association independently. These methods make the network structure complicated and limit the improvement of MOT accuracy. we proposed a 3D MOT framework based on simultaneous optimization of object detection and scene flow estimation. In the framework, a detection-guidance scene flow module is proposed to relieve the problem of incorrect inter-frame assocation. For more accurate scene flow label especially in the case of motion with rotation, a box-transformation-based scene flow ground truth calculation method is proposed. Experimental results on the KITTI MOT dataset show competitive results over the state-of-the-arts and the robustness under extreme motion with rotation.
['Hesheng Wang', 'Guangming Wang', 'Yueling Shen']
2022-03-04
null
null
null
null
['scene-flow-estimation', '3d-multi-object-tracking']
['computer-vision', 'computer-vision']
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[6.748386383056641, -2.1469478607177734]
5bbaede4-191c-4c93-a882-a370ebdf9801
exploring-depth-information-for-face
2212.1423
null
https://arxiv.org/abs/2212.14230v1
https://arxiv.org/pdf/2212.14230v1.pdf
Exploring Depth Information for Face Manipulation Detection
Face manipulation detection has been receiving a lot of attention for the reliability and security of the face images. Recent studies focus on using auxiliary information or prior knowledge to capture robust manipulation traces, which are shown to be promising. As one of the important face features, the face depth map, which has shown to be effective in other areas such as the face recognition or face detection, is unfortunately paid little attention to in literature for detecting the manipulated face images. In this paper, we explore the possibility of incorporating the face depth map as auxiliary information to tackle the problem of face manipulation detection in real world applications. To this end, we first propose a Face Depth Map Transformer (FDMT) to estimate the face depth map patch by patch from a RGB face image, which is able to capture the local depth anomaly created due to manipulation. The estimated face depth map is then considered as auxiliary information to be integrated with the backbone features using a Multi-head Depth Attention (MDA) mechanism that is newly designed. Various experiments demonstrate the advantage of our proposed method for face manipulation detection.
['Xinpeng Zhang', 'Zhenxing Qian', 'Sheng Li', 'Meiling Li', 'Haoyue Wang']
2022-12-29
null
null
null
null
['face-detection']
['computer-vision']
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[13.330334663391113, 0.46657058596611023]
6413a346-8428-4f91-9a44-cc842d15ca16
event-coreference-resolution-using-neural
1810.04216
null
http://arxiv.org/abs/1810.04216v1
http://arxiv.org/pdf/1810.04216v1.pdf
Event Coreference Resolution Using Neural Network Classifiers
This paper presents a neural network classifier approach to detecting both within- and cross- document event coreference effectively using only event mention based features. Our approach does not (yet) rely on any event argument features such as semantic roles or spatiotemporal arguments. Experimental results on the ECB+ dataset show that our approach produces F1 scores that significantly outperform the state-of-the-art methods for both within-document and cross-document event coreference resolution when we use B3 and CEAFe evaluation measures, but gets worse F1 score with the MUC measure. However, when we use the CoNLL measure, which is the average of these three scores, our approach has slightly better F1 for within- document event coreference resolution but is significantly better for cross-document event coreference resolution.
['Kemal Oflazer', 'Lamana Mulaffer', 'Amna AlZeyara', 'Arun Pandian']
2018-10-09
null
null
null
null
['cross-document-coreference-resolution']
['natural-language-processing']
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[9.245667457580566, 9.52568244934082]
56d34372-e61b-4702-ba8c-68dfab100062
very-long-natural-scenery-image-prediction-by-1
1912.12688
null
https://arxiv.org/abs/1912.12688v1
https://arxiv.org/pdf/1912.12688v1.pdf
Very Long Natural Scenery Image Prediction by Outpainting
Comparing to image inpainting, image outpainting receives less attention due to two challenges in it. The first challenge is how to keep the spatial and content consistency between generated images and original input. The second challenge is how to maintain high quality in generated results, especially for multi-step generations in which generated regions are spatially far away from the initial input. To solve the two problems, we devise some innovative modules, named Skip Horizontal Connection and Recurrent Content Transfer, and integrate them into our designed encoder-decoder structure. By this design, our network can generate highly realistic outpainting prediction effectively and efficiently. Other than that, our method can generate new images with very long sizes while keeping the same style and semantic content as the given input. To test the effectiveness of the proposed architecture, we collect a new scenery dataset with diverse, complicated natural scenes. The experimental results on this dataset have demonstrated the efficacy of our proposed network. The code and dataset are available from https://github.com/z-x-yang/NS-Outpainting.
['Jian Dong', 'Zongxin Yang', 'Yi Yang', 'Ping Liu', 'Shuicheng Yan']
2019-12-29
very-long-natural-scenery-image-prediction-by
http://openaccess.thecvf.com/content_ICCV_2019/html/Yang_Very_Long_Natural_Scenery_Image_Prediction_by_Outpainting_ICCV_2019_paper.html
http://openaccess.thecvf.com/content_ICCV_2019/papers/Yang_Very_Long_Natural_Scenery_Image_Prediction_by_Outpainting_ICCV_2019_paper.pdf
iccv-2019-10
['image-outpainting']
['computer-vision']
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[11.396196365356445, -1.0075087547302246]
79946c35-eba2-4ab4-bd7c-948524ec5ae3
global-deep-learning-methods-for
1812.04103
null
https://arxiv.org/abs/1812.04103v2
https://arxiv.org/pdf/1812.04103v2.pdf
Non-local U-Net for Biomedical Image Segmentation
Deep learning has shown its great promise in various biomedical image segmentation tasks. Existing models are typically based on U-Net and rely on an encoder-decoder architecture with stacked local operators to aggregate long-range information gradually. However, only using the local operators limits the efficiency and effectiveness. In this work, we propose the non-local U-Nets, which are equipped with flexible global aggregation blocks, for biomedical image segmentation. These blocks can be inserted into U-Net as size-preserving processes, as well as down-sampling and up-sampling layers. We perform thorough experiments on the 3D multimodality isointense infant brain MR image segmentation task to evaluate the non-local U-Nets. Results show that our proposed models achieve top performances with fewer parameters and faster computation.
['Shuiwang Ji', 'Zhengyang Wang', 'Dinggang Shen', 'Na Zou']
2018-12-10
null
null
null
null
['brain-image-segmentation']
['medical']
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[14.562223434448242, -2.614645481109619]
107fa7e6-013a-46a8-ad68-2b83e9d28202
rgb-multispectral-matching-dataset-learning-1
2206.07047
null
https://arxiv.org/abs/2206.07047v1
https://arxiv.org/pdf/2206.07047v1.pdf
RGB-Multispectral Matching: Dataset, Learning Methodology, Evaluation
We address the problem of registering synchronized color (RGB) and multi-spectral (MS) images featuring very different resolution by solving stereo matching correspondences. Purposely, we introduce a novel RGB-MS dataset framing 13 different scenes in indoor environments and providing a total of 34 image pairs annotated with semi-dense, high-resolution ground-truth labels in the form of disparity maps. To tackle the task, we propose a deep learning architecture trained in a self-supervised manner by exploiting a further RGB camera, required only during training data acquisition. In this setup, we can conveniently learn cross-modal matching in the absence of ground-truth labels by distilling knowledge from an easier RGB-RGB matching task based on a collection of about 11K unlabeled image triplets. Experiments show that the proposed pipeline sets a good performance bar (1.16 pixels average registration error) for future research on this novel, challenging task.
['Luigi Di Stefano', 'Stefano Mattoccia', 'Samuele Salti', 'Matteo Poggi', 'Pierluigi Zama Ramirez', 'Fabio Tosi']
2022-06-14
rgb-multispectral-matching-dataset-learning
http://openaccess.thecvf.com//content/CVPR2022/html/Tosi_RGB-Multispectral_Matching_Dataset_Learning_Methodology_Evaluation_CVPR_2022_paper.html
http://openaccess.thecvf.com//content/CVPR2022/papers/Tosi_RGB-Multispectral_Matching_Dataset_Learning_Methodology_Evaluation_CVPR_2022_paper.pdf
cvpr-2022-1
['stereo-matching-1']
['computer-vision']
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[8.193516731262207, -2.2617876529693604]
8c6e8821-26ac-4c36-a1c6-98426d7ae4f3
optimal-activation-of-halting-multi-armed
2304.10302
null
https://arxiv.org/abs/2304.10302v1
https://arxiv.org/pdf/2304.10302v1.pdf
Optimal Activation of Halting Multi-Armed Bandit Models
We study new types of dynamic allocation problems the {\sl Halting Bandit} models. As an application, we obtain new proofs for the classic Gittins index decomposition result and recent results of the authors in `Multi-armed bandits under general depreciation and commitment.'
['Sheldon M. Ross', 'Michael N. Katehakis', 'Wesley Cowan']
2023-04-20
null
null
null
null
['multi-armed-bandits']
['miscellaneous']
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[4.5008440017700195, 3.2752442359924316]
fe94ed9c-2de1-4e6f-a328-5dc2c223a9cd
high-performance-neural-networks-for-visual
1102.0183
null
https://arxiv.org/abs/1102.0183v1
https://arxiv.org/pdf/1102.0183v1.pdf
High-Performance Neural Networks for Visual Object Classification
We present a fast, fully parameterizable GPU implementation of Convolutional Neural Network variants. Our feature extractors are neither carefully designed nor pre-wired, but rather learned in a supervised way. Our deep hierarchical architectures achieve the best published results on benchmarks for object classification (NORB, CIFAR10) and handwritten digit recognition (MNIST), with error rates of 2.53%, 19.51%, 0.35%, respectively. Deep nets trained by simple back-propagation perform better than more shallow ones. Learning is surprisingly rapid. NORB is completely trained within five epochs. Test error rates on MNIST drop to 2.42%, 0.97% and 0.48% after 1, 3 and 17 epochs, respectively.
['Jürgen Schmidhuber', 'Luca M. Gambardella', 'Jonathan Masci', 'Ueli Meier', 'Dan C. Cireşan']
2011-02-01
null
null
null
null
['handwritten-digit-recognition']
['computer-vision']
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[8.998150825500488, 2.434209108352661]
43967bf1-0084-402d-8a6d-2fc26d7df0c8
real-time-localized-photorealistic-video
2010.10056
null
https://arxiv.org/abs/2010.10056v1
https://arxiv.org/pdf/2010.10056v1.pdf
Real-time Localized Photorealistic Video Style Transfer
We present a novel algorithm for transferring artistic styles of semantically meaningful local regions of an image onto local regions of a target video while preserving its photorealism. Local regions may be selected either fully automatically from an image, through using video segmentation algorithms, or from casual user guidance such as scribbles. Our method, based on a deep neural network architecture inspired by recent work in photorealistic style transfer, is real-time and works on arbitrary inputs without runtime optimization once trained on a diverse dataset of artistic styles. By augmenting our video dataset with noisy semantic labels and jointly optimizing over style, content, mask, and temporal losses, our method can cope with a variety of imperfections in the input and produce temporally coherent videos without visual artifacts. We demonstrate our method on a variety of style images and target videos, including the ability to transfer different styles onto multiple objects simultaneously, and smoothly transition between styles in time.
['Jiawen Chen', 'Brian Kulis', 'Abby Chang', 'Zheng Sun', 'Wei-Sheng Lai', 'Tianfan Xue', 'Xide Xia']
2020-10-20
null
null
null
null
['video-style-transfer']
['computer-vision']
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[11.377276420593262, -0.6455422043800354]
7b61b0a7-e616-4302-a409-cdf704d6b117
breaking-the-cycle-colleagues-are-all-you-1
null
null
http://openaccess.thecvf.com/content_CVPR_2020/html/Nizan_Breaking_the_Cycle_-_Colleagues_Are_All_You_Need_CVPR_2020_paper.html
http://openaccess.thecvf.com/content_CVPR_2020/papers/Nizan_Breaking_the_Cycle_-_Colleagues_Are_All_You_Need_CVPR_2020_paper.pdf
Breaking the Cycle - Colleagues Are All You Need
This paper proposes a novel approach to performing image-to-image translation between unpaired domains. Rather than relying on a cycle constraint, our method takes advantage of collaboration between various GANs. This results in a multi modal method, in which multiple optional and diverse images are produced for a given image. Our model addresses some of the shortcomings of classical GANs: (1) It is able to remove large objects, such as glasses. (2) Since it does not need to support the cycle constraint, no irrelevant traces of the input are left on the generated image. (3) It manages to translate between domains that require large shape modifications. Our results are shown to outperform those generated by state-of-the-art methods for several challenging applications on commonly-used datasets, both qualitatively and quantitatively.
[' Ayellet Tal', 'Ori Nizan']
2020-06-01
null
null
null
cvpr-2020-6
['multimodal-unsupervised-image-to-image']
['computer-vision']
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[11.650792121887207, -0.5441509485244751]
afe0ebd8-ac22-4d22-941f-b48d7df0ea89
time-sequence-channel-inference-for-beam
1812.0122
null
http://arxiv.org/abs/1812.01220v1
http://arxiv.org/pdf/1812.01220v1.pdf
Time-Sequence Channel Inference for Beam Alignment in Vehicular Networks
In this paper, we propose a learning-based low-overhead beam alignment method for vehicle-to-infrastructure communication in vehicular networks. The main idea is to remotely infer the optimal beam directions at a target base station in future time slots, based on the CSI of a source base station in previous time slots. The proposed scheme can reduce channel acquisition and beam training overhead by replacing pilot-aided beam training with online inference from a sequence-to-sequence neural network. Simulation results based on ray-tracing channel data show that our proposed scheme achieves a $8.86\%$ improvement over location-based beamforming schemes with a positioning error of $1$m, and is within a $4.93\%$ performance loss compared with the genie-aided optimal beamformer.
['Zhiyuan Jiang', 'Sheng Zhou', 'Zhisheng Niu', 'Sheng Chen']
2018-12-04
null
null
null
null
['neural-network-simulation']
['computer-code']
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[6.27890682220459, 1.219303011894226]
d8d4bab0-69f6-458c-8a8e-22071b54aebc
robin-a-benchmark-for-robustness-to
2111.14341
null
https://arxiv.org/abs/2111.14341v4
https://arxiv.org/pdf/2111.14341v4.pdf
OOD-CV: A Benchmark for Robustness to Out-of-Distribution Shifts of Individual Nuisances in Natural Images
Enhancing the robustness of vision algorithms in real-world scenarios is challenging. One reason is that existing robustness benchmarks are limited, as they either rely on synthetic data or ignore the effects of individual nuisance factors. We introduce OOD-CV, a benchmark dataset that includes out-of-distribution examples of 10 object categories in terms of pose, shape, texture, context and the weather conditions, and enables benchmarking models for image classification, object detection, and 3D pose estimation. In addition to this novel dataset, we contribute extensive experiments using popular baseline methods, which reveal that: 1. Some nuisance factors have a much stronger negative effect on the performance compared to others, also depending on the vision task. 2. Current approaches to enhance robustness have only marginal effects, and can even reduce robustness. 3. We do not observe significant differences between convolutional and transformer architectures. We believe our dataset provides a rich testbed to study robustness and will help push forward research in this area.
['Adam Kortylewski', 'Alan Yuille', 'Ju He', 'Angtian Wang', 'Shenxiao Mei', 'Mingxin Yu', 'Wufei Ma', 'Shaozuo Yu', 'Bingchen Zhao']
2021-11-29
null
null
null
null
['3d-pose-estimation']
['computer-vision']
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[8.075532913208008, -1.406450629234314]
8cee172f-40ae-4ecc-9758-e6bf645935b8
on-training-sketch-recognizers-for-new
2104.0885
null
https://arxiv.org/abs/2104.08850v1
https://arxiv.org/pdf/2104.08850v1.pdf
On Training Sketch Recognizers for New Domains
Sketch recognition algorithms are engineered and evaluated using publicly available datasets contributed by the sketch recognition community over the years. While existing datasets contain sketches of a limited set of generic objects, each new domain inevitably requires collecting new data for training domain specific recognizers. This gives rise to two fundamental concerns: First, will the data collection protocol yield ecologically valid data? Second, will the amount of collected data suffice to train sufficiently accurate classifiers? In this paper, we draw attention to these two concerns. We show that the ecological validity of the data collection protocol and the ability to accommodate small datasets are significant factors impacting recognizer accuracy in realistic scenarios. More specifically, using sketch-based gaming as a use case, we show that deep learning methods, as well as more traditional methods, suffer significantly from dataset shift. Furthermore, we demonstrate that in realistic scenarios where data is scarce and expensive, standard measures taken for adapting deep learners to small datasets fall short of comparing favorably with alternatives. Although transfer learning, and extensive data augmentation help deep learners, they still perform significantly worse compared to standard setups (e.g., SVMs and GBMs with standard feature representations). We pose learning from small datasets as a key problem for the deep sketch recognition field, one which has been ignored in the bulk of the existing literature.
['T. Metin Sezgin', 'Kemal Tugrul Yesilbek']
2021-04-18
null
null
null
null
['sketch-recognition']
['computer-vision']
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[9.97230052947998, 2.5305545330047607]
6fcc621d-70b3-4834-9dce-2e1b8f217af0
material-recognition-from-local-appearance-in
1611.09394
null
http://arxiv.org/abs/1611.09394v3
http://arxiv.org/pdf/1611.09394v3.pdf
Material Recognition from Local Appearance in Global Context
Recognition of materials has proven to be a challenging problem due to the wide variation in appearance within and between categories. Global image context, such as where the material is or what object it makes up, can be crucial to recognizing the material. Existing methods, however, operate on an implicit fusion of materials and context by using large receptive fields as input (i.e., large image patches). Many recent material recognition methods treat materials as yet another set of labels like objects. Materials are, however, fundamentally different from objects as they have no inherent shape or defined spatial extent. Approaches that ignore this can only take advantage of limited implicit context as it appears during training. We instead show that recognizing materials purely from their local appearance and integrating separately recognized global contextual cues including objects and places leads to superior dense, per-pixel, material recognition. We achieve this by training a fully-convolutional material recognition network end-to-end with only material category supervision. We integrate object and place estimates to this network from independent CNNs. This approach avoids the necessity of preparing an impractically-large amount of training data to cover the product space of materials, objects, and scenes, while fully leveraging contextual cues for dense material recognition. Furthermore, we perform a detailed analysis of the effects of context granularity, spatial resolution, and the network level at which we introduce context. On a recently introduced comprehensive and diverse material database \cite{Schwartz2016}, we confirm that our method achieves state-of-the-art accuracy with significantly less training data compared to past methods.
['Ko Nishino', 'Gabriel Schwartz']
2016-11-28
null
null
null
null
['material-recognition']
['computer-vision']
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[10.170536994934082, -0.10981159657239914]
69a3aee3-6052-4f0f-b58b-1e7adca26d99
language-embeddings-for-typology-and-cross
2106.02082
null
https://arxiv.org/abs/2106.02082v1
https://arxiv.org/pdf/2106.02082v1.pdf
Language Embeddings for Typology and Cross-lingual Transfer Learning
Cross-lingual language tasks typically require a substantial amount of annotated data or parallel translation data. We explore whether language representations that capture relationships among languages can be learned and subsequently leveraged in cross-lingual tasks without the use of parallel data. We generate dense embeddings for 29 languages using a denoising autoencoder, and evaluate the embeddings using the World Atlas of Language Structures (WALS) and two extrinsic tasks in a zero-shot setting: cross-lingual dependency parsing and cross-lingual natural language inference.
['Kenji Sagae', 'Taiqi He', 'Dian Yu']
2021-06-03
null
https://aclanthology.org/2021.acl-long.560
https://aclanthology.org/2021.acl-long.560.pdf
acl-2021-5
['cross-lingual-natural-language-inference']
['natural-language-processing']
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[11.005242347717285, 9.904871940612793]
d6b6a20a-00fd-482b-a2e8-7037d6147a85
the-rl-perceptron-generalisation-dynamics-of
2306.10404
null
https://arxiv.org/abs/2306.10404v3
https://arxiv.org/pdf/2306.10404v3.pdf
The RL Perceptron: Generalisation Dynamics of Policy Learning in High Dimensions
Reinforcement learning (RL) algorithms have proven transformative in a range of domains. To tackle real-world domains, these systems often use neural networks to learn policies directly from pixels or other high-dimensional sensory input. By contrast, much theory of RL has focused on discrete state spaces or worst-case analysis, and fundamental questions remain about the dynamics of policy learning in high-dimensional settings. Here, we propose a solvable high-dimensional model of RL that can capture a variety of learning protocols, and derive its typical dynamics as a set of closed-form ordinary differential equations (ODEs). We derive optimal schedules for the learning rates and task difficulty - analogous to annealing schemes and curricula during training in RL - and show that the model exhibits rich behaviour, including delayed learning under sparse rewards; a variety of learning regimes depending on reward baselines; and a speed-accuracy trade-off driven by reward stringency. Experiments on variants of the Procgen game "Bossfight" and Arcade Learning Environment game "Pong" also show such a speed-accuracy trade-off in practice. Together, these results take a step towards closing the gap between theory and practice in high-dimensional RL.
['Adrew Saxe', 'Sebastian Goldt', 'Stefano Sarao Mannelli', 'Sebastian Lee', 'Nishil Patel']
2023-06-17
null
null
null
null
['atari-games']
['playing-games']
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[4.095468044281006, 1.8568180799484253]
32d76955-3cb1-4d18-a620-7c01abc2d620
robust-multi-image-based-blind-face
null
null
http://openaccess.thecvf.com/content_cvpr_2015/html/Jin_Robust_Multi-Image_Based_2015_CVPR_paper.html
http://openaccess.thecvf.com/content_cvpr_2015/papers/Jin_Robust_Multi-Image_Based_2015_CVPR_paper.pdf
Robust Multi-Image Based Blind Face Hallucination
This paper proposes a robust multi-image based blind face hallucination framework to super-resolve LR faces. The proposed framework first estimates both blurring kernel and transformations of multiple LR faces by robust deblurring and registration in PCA subspace. A patch-wise mixture of probabilistic PCA prior is then incorporated for face super-resolution. Previous work on face SR using PCA prior can be viewed as special cases of the framework. Experimental results in both simulated and real LR sequences demonstrate very promising performance of the proposed method.
['Christos-Savvas Bouganis', 'Yonggang Jin']
2015-06-01
null
null
null
cvpr-2015-6
['face-hallucination']
['computer-vision']
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[12.85014533996582, -0.002096820157021284]
a81b2951-b40d-4e18-a4d1-029cf650be3f
textbox-2-0-a-text-generation-library-with
2212.13005
null
https://arxiv.org/abs/2212.13005v1
https://arxiv.org/pdf/2212.13005v1.pdf
TextBox 2.0: A Text Generation Library with Pre-trained Language Models
To facilitate research on text generation, this paper presents a comprehensive and unified library, TextBox 2.0, focusing on the use of pre-trained language models (PLMs). To be comprehensive, our library covers $13$ common text generation tasks and their corresponding $83$ datasets and further incorporates $45$ PLMs covering general, translation, Chinese, dialogue, controllable, distilled, prompting, and lightweight PLMs. We also implement $4$ efficient training strategies and provide $4$ generation objectives for pre-training new PLMs from scratch. To be unified, we design the interfaces to support the entire research pipeline (from data loading to training and evaluation), ensuring that each step can be fulfilled in a unified way. Despite the rich functionality, it is easy to use our library, either through the friendly Python API or command line. To validate the effectiveness of our library, we conduct extensive experiments and exemplify four types of research scenarios. The project is released at the link: https://github.com/RUCAIBox/TextBox.
['Ji-Rong Wen', 'Jian-Yun Nie', 'Wayne Xin Zhao', 'Yuhao Wang', 'Xiaoxue Cheng', 'Zican Dong', 'Wenxun Dai', 'Zhuohao Yu', 'Yiwen Hu', 'Zhipeng Chen', 'Junyi Li', 'Tianyi Tang']
2022-12-26
null
null
null
null
['dialogue', 'abstractive-text-summarization', 'data-to-text-generation', 'story-generation', 'question-generation', 'task-oriented-dialogue-systems']
['natural-language-processing', 'natural-language-processing', 'natural-language-processing', 'natural-language-processing', 'natural-language-processing', 'natural-language-processing']
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[11.478611946105957, 9.12226676940918]
95715e21-d2ad-4aed-bdaf-d2bc4533384b
deeper-profiles-and-cascaded-recurrent-and
null
null
https://doi.org/10.1038/s41598-019-48786-x
https://www.nature.com/articles/s41598-019-48786-x.pdf
Deeper Profiles and Cascaded Recurrent and Convolutional Neural Networks for state-of-the-art Protein Secondary Structure Prediction
Protein Secondary Structure prediction has been a central topic of research in Bioinformatics for decades. In spite of this, even the most sophisticated ab initio SS predictors are not able to reach the theoretical limit of three-state prediction accuracy (88–90%), while only a few predict more than the 3 traditional Helix, Strand and Coil classes. In this study we present tests on different models trained both on single sequence and evolutionary profile-based inputs and develop a new state-of-the-art system with Porter 5. Porter 5 is composed of ensembles of cascaded Bidirectional Recurrent Neural Networks and Convolutional Neural Networks, incorporates new input encoding techniques and is trained on a large set of protein structures. Porter 5 achieves 84% accuracy (81% SOV) when tested on 3 classes and 73% accuracy (70% SOV) on 8 classes on a large independent set. In our tests Porter 5 is 2% more accurate than its previous version and outperforms or matches the most recent predictors of secondary structure we tested. When Porter 5 is retrained on SCOPe based sets that eliminate homology between training/testing samples we obtain similar results. Porter is available as a web server and standalone program at http://distilldeep.ucd.ie/porter/ alongside all the datasets and alignments.
['Mirko Torrisi', 'Gianluca Pollastri', 'Manaz Kaleel']
2019-10-12
null
null
null
scientific-reports-2019-10
['protein-secondary-structure-prediction']
['medical']
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[4.717804908752441, 5.562806129455566]
57bdbc61-518b-436a-a663-2edcfff9db0e
balancing-novelty-and-salience-adaptive
1701.03947
null
http://arxiv.org/abs/1701.03947v1
http://arxiv.org/pdf/1701.03947v1.pdf
Balancing Novelty and Salience: Adaptive Learning to Rank Entities for Timeline Summarization of High-impact Events
Long-running, high-impact events such as the Boston Marathon bombing often develop through many stages and involve a large number of entities in their unfolding. Timeline summarization of an event by key sentences eases story digestion, but does not distinguish between what a user remembers and what she might want to re-check. In this work, we present a novel approach for timeline summarization of high-impact events, which uses entities instead of sentences for summarizing the event at each individual point in time. Such entity summaries can serve as both (1) important memory cues in a retrospective event consideration and (2) pointers for personalized event exploration. In order to automatically create such summaries, it is crucial to identify the "right" entities for inclusion. We propose to learn a ranking function for entities, with a dynamically adapted trade-off between the in-document salience of entities and the informativeness of entities across documents, i.e., the level of new information associated with an entity for a time point under consideration. Furthermore, for capturing collective attention for an entity we use an innovative soft labeling approach based on Wikipedia. Our experiments on a real large news datasets confirm the effectiveness of the proposed methods.
['Claudia Niederée', 'Nattiya Kanhabua', 'Avishek Anand', 'Ujwal Gadiraju', 'Tuan Tran']
2017-01-14
null
null
null
null
['timeline-summarization']
['natural-language-processing']
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[12.56828498840332, 9.517938613891602]
4afdbae4-5a64-49ab-8c7a-0b47a404f499
speech-modeling-with-a-hierarchical
2303.09404
null
https://arxiv.org/abs/2303.09404v2
https://arxiv.org/pdf/2303.09404v2.pdf
Speech Modeling with a Hierarchical Transformer Dynamical VAE
The dynamical variational autoencoders (DVAEs) are a family of latent-variable deep generative models that extends the VAE to model a sequence of observed data and a corresponding sequence of latent vectors. In almost all the DVAEs of the literature, the temporal dependencies within each sequence and across the two sequences are modeled with recurrent neural networks. In this paper, we propose to model speech signals with the Hierarchical Transformer DVAE (HiT-DVAE), which is a DVAE with two levels of latent variable (sequence-wise and frame-wise) and in which the temporal dependencies are implemented with the Transformer architecture. We show that HiT-DVAE outperforms several other DVAEs for speech spectrogram modeling, while enabling a simpler training procedure, revealing its high potential for downstream low-level speech processing tasks such as speech enhancement.
['Xavier Alameda-Pineda', 'Laurent Girin', 'Simon Leglaive', 'Xiaoyu Bie', 'Xiaoyu Lin']
2023-03-07
null
null
null
null
['speech-enhancement']
['speech']
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[15.080416679382324, 6.312829971313477]
f87eb258-d059-40d9-b39e-c72ca38b73d6
non-rigid-point-cloud-registration-for-middle
2304.13618
null
https://arxiv.org/abs/2304.13618v1
https://arxiv.org/pdf/2304.13618v1.pdf
Non-rigid Point Cloud Registration for Middle Ear Diagnostics with Endoscopic Optical Coherence Tomography
Purpose: Middle ear infection is the most prevalent inflammatory disease, especially among the pediatric population. Current diagnostic methods are subjective and depend on visual cues from an otoscope, which is limited for otologists to identify pathology. To address this shortcoming, endoscopic optical coherence tomography (OCT) provides both morphological and functional in-vivo measurements of the middle ear. However, due to the shadow of prior structures, interpretation of OCT images is challenging and time-consuming. To facilitate fast diagnosis and measurement, improvement in the readability of OCT data is achieved by merging morphological knowledge from ex-vivo middle ear models with OCT volumetric data, so that OCT applications can be further promoted in daily clinical settings. Methods: We propose C2P-Net: a two-staged non-rigid registration pipeline for complete to partial point clouds, which are sampled from ex-vivo and in-vivo OCT models, respectively. To overcome the lack of labeled training data, a fast and effective generation pipeline in Blender3D is designed to simulate middle ear shapes and extract in-vivo noisy and partial point clouds. Results: We evaluate the performance of C2P-Net through experiments on both synthetic and real OCT datasets. The results demonstrate that C2P-Net is generalized to unseen middle ear point clouds and capable of handling realistic noise and incompleteness in synthetic and real OCT data. Conclusion: In this work, we aim to enable diagnosis of middle ear structures with the assistance of OCT images. We propose C2P-Net: a two-staged non-rigid registration pipeline for point clouds to support the interpretation of in-vivo noisy and partial OCT images for the first time. Code is available at: https://gitlab.com/nct\_tso\_public/c2p-net.
['Stefanie Speidel', 'Marcus Neudert', 'Edmund Koch', 'Zhaoyu Chen', 'Yujia Hu', 'Chenpan Li', 'Sebastian Bodenstedt', 'Joseph Morgenstern', 'Jonas Golde', 'Peng Liu']
2023-04-26
null
null
null
null
['point-cloud-registration']
['computer-vision']
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[13.881196022033691, -2.9506514072418213]
722a7e8c-14f0-4af0-8ecd-513e1e1c2c51
information-gain-sampling-for-active-learning
2208.00974
null
https://arxiv.org/abs/2208.00974v1
https://arxiv.org/pdf/2208.00974v1.pdf
Information Gain Sampling for Active Learning in Medical Image Classification
Large, annotated datasets are not widely available in medical image analysis due to the prohibitive time, costs, and challenges associated with labelling large datasets. Unlabelled datasets are easier to obtain, and in many contexts, it would be feasible for an expert to provide labels for a small subset of images. This work presents an information-theoretic active learning framework that guides the optimal selection of images from the unlabelled pool to be labeled based on maximizing the expected information gain (EIG) on an evaluation dataset. Experiments are performed on two different medical image classification datasets: multi-class diabetic retinopathy disease scale classification and multi-class skin lesion classification. Results indicate that by adapting EIG to account for class-imbalances, our proposed Adapted Expected Information Gain (AEIG) outperforms several popular baselines including the diversity based CoreSet and uncertainty based maximum entropy sampling. Specifically, AEIG achieves ~95% of overall performance with only 19% of the training data, while other active learning approaches require around 25%. We show that, by careful design choices, our model can be integrated into existing deep learning classifiers.
['Tal Arbel', 'Brennan Nichyporuk', 'Changjian Shui', 'Raghav Mehta']
2022-08-01
null
null
null
null
['skin-lesion-classification']
['medical']
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[14.921767234802246, -2.3250699043273926]
3705d603-2871-4657-8e9f-08d3b7d814ab
rfc-net-learning-high-resolution-global
2302.06134
null
https://arxiv.org/abs/2302.06134v1
https://arxiv.org/pdf/2302.06134v1.pdf
RFC-Net: Learning High Resolution Global Features for Medical Image Segmentation on a Computational Budget
Learning High-Resolution representations is essential for semantic segmentation. Convolutional neural network (CNN)architectures with downstream and upstream propagation flow are popular for segmentation in medical diagnosis. However, due to performing spatial downsampling and upsampling in multiple stages, information loss is inexorable. On the contrary, connecting layers densely on high spatial resolution is computationally expensive. In this work, we devise a Loose Dense Connection Strategy to connect neurons in subsequent layers with reduced parameters. On top of that, using a m-way Tree structure for feature propagation we propose Receptive Field Chain Network (RFC-Net) that learns high resolution global features on a compressed computational space. Our experiments demonstrates that RFC-Net achieves state-of-the-art performance on Kvasir and CVC-ClinicDB benchmarks for Polyp segmentation.
['David Chapman', 'Tim Oates', 'Md Osman Gani', 'Shaswati Saha', 'Sourajit Saha']
2023-02-13
null
null
null
null
['medical-diagnosis']
['medical']
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[14.53510570526123, -2.592127561569214]
ff912a90-e43d-4f55-9d8c-4749d35ef4e5
why-words-alone-are-not-enough-error-analysis
null
null
https://aclanthology.org/W13-4101
https://aclanthology.org/W13-4101.pdf
Why Words Alone Are Not Enough: Error Analysis of Lexicon-based Polarity Classifier for Czech
null
['Jan Haji{\\v{c}} jr.', "Kate{\\v{r}}ina Veselovsk{\\'a}"]
2013-10-01
null
null
null
ws-2013-10
['fine-grained-opinion-analysis']
['natural-language-processing']
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[-7.156679153442383, 3.7958171367645264]
54694759-f82d-4a3a-8750-ba524632f266
optimized-three-deep-learning-models-based
2306.07296
null
https://arxiv.org/abs/2306.07296v1
https://arxiv.org/pdf/2306.07296v1.pdf
Optimized Three Deep Learning Models Based-PSO Hyperparameters for Beijing PM2.5 Prediction
Deep learning is a machine learning approach that produces excellent performance in various applications, including natural language processing, image identification, and forecasting. Deep learning network performance depends on the hyperparameter settings. This research attempts to optimize the deep learning architecture of Long short term memory (LSTM), Convolutional neural network (CNN), and Multilayer perceptron (MLP) for forecasting tasks using Particle swarm optimization (PSO), a swarm intelligence-based metaheuristic optimization methodology: Proposed M-1 (PSO-LSTM), M-2 (PSO-CNN), and M-3 (PSO-MLP). Beijing PM2.5 datasets was analyzed to measure the performance of the proposed models. PM2.5 as a target variable was affected by dew point, pressure, temperature, cumulated wind speed, hours of snow, and hours of rain. The deep learning network inputs consist of three different scenarios: daily, weekly, and monthly. The results show that the proposed M-1 with three hidden layers produces the best results of RMSE and MAPE compared to the proposed M-2, M-3, and all the baselines. A recommendation for air pollution management could be generated by using these optimized models
['Felix Andika Dwiyanto', 'Agung Bella Putra Utama', 'Aji Prasetya Wibawa', 'Yingchi Mao', 'Andri Pranolo']
2023-06-10
null
null
null
null
['metaheuristic-optimization']
['methodology']
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[6.208837032318115, 2.8080077171325684]
f5c0df20-48a8-4a8e-85e9-17f01be52334
alfworld-aligning-text-and-embodied
2010.03768
null
https://arxiv.org/abs/2010.03768v2
https://arxiv.org/pdf/2010.03768v2.pdf
ALFWorld: Aligning Text and Embodied Environments for Interactive Learning
Given a simple request like Put a washed apple in the kitchen fridge, humans can reason in purely abstract terms by imagining action sequences and scoring their likelihood of success, prototypicality, and efficiency, all without moving a muscle. Once we see the kitchen in question, we can update our abstract plans to fit the scene. Embodied agents require the same abilities, but existing work does not yet provide the infrastructure necessary for both reasoning abstractly and executing concretely. We address this limitation by introducing ALFWorld, a simulator that enables agents to learn abstract, text based policies in TextWorld (C\^ot\'e et al., 2018) and then execute goals from the ALFRED benchmark (Shridhar et al., 2020) in a rich visual environment. ALFWorld enables the creation of a new BUTLER agent whose abstract knowledge, learned in TextWorld, corresponds directly to concrete, visually grounded actions. In turn, as we demonstrate empirically, this fosters better agent generalization than training only in the visually grounded environment. BUTLER's simple, modular design factors the problem to allow researchers to focus on models for improving every piece of the pipeline (language understanding, planning, navigation, and visual scene understanding).
['Matthew Hausknecht', 'Adam Trischler', 'Yonatan Bisk', 'Marc-Alexandre Côté', 'Xingdi Yuan', 'Mohit Shridhar']
2020-10-08
null
null
null
null
['natural-language-visual-grounding']
['reasoning']
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[4.2787184715271, 0.8953312039375305]
04740d3a-6a51-4e98-9888-89caf83e92c0
fully-sparse-fusion-for-3d-object-detection
2304.1231
null
https://arxiv.org/abs/2304.12310v2
https://arxiv.org/pdf/2304.12310v2.pdf
Fully Sparse Fusion for 3D Object Detection
Currently prevalent multimodal 3D detection methods are built upon LiDAR-based detectors that usually use dense Bird's-Eye-View (BEV) feature maps. However, the cost of such BEV feature maps is quadratic to the detection range, making it not suitable for long-range detection. Fully sparse architecture is gaining attention as they are highly efficient in long-range perception. In this paper, we study how to effectively leverage image modality in the emerging fully sparse architecture. Particularly, utilizing instance queries, our framework integrates the well-studied 2D instance segmentation into the LiDAR side, which is parallel to the 3D instance segmentation part in the fully sparse detector. This design achieves a uniform query-based fusion framework in both the 2D and 3D sides while maintaining the fully sparse characteristic. Extensive experiments showcase state-of-the-art results on the widely used nuScenes dataset and the long-range Argoverse 2 dataset. Notably, the inference speed of the proposed method under the long-range LiDAR perception setting is 2.7 $\times$ faster than that of other state-of-the-art multimodal 3D detection methods. Code will be released at \url{https://github.com/BraveGroup/FullySparseFusion}.
['Tieniu Tan', 'Zhaoxiang Zhang', 'Naiyan Wang', 'Yuntao Chen', 'Zehao Huang', 'Yang Liu', 'Lue Fan', 'Yingyan Li']
2023-04-24
null
null
null
null
['3d-instance-segmentation-1']
['computer-vision']
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[7.786181926727295, -2.603565216064453]
bab385e5-ba3e-4169-8dbc-c153fde224a5
dynamic-context-sensitive-filtering-network
null
null
http://openaccess.thecvf.com//content/ICCV2021/html/Zhang_Dynamic_Context-Sensitive_Filtering_Network_for_Video_Salient_Object_Detection_ICCV_2021_paper.html
http://openaccess.thecvf.com//content/ICCV2021/papers/Zhang_Dynamic_Context-Sensitive_Filtering_Network_for_Video_Salient_Object_Detection_ICCV_2021_paper.pdf
Dynamic Context-Sensitive Filtering Network for Video Salient Object Detection
The ability to capture inter-frame dynamics has been critical to the development of video salient object detection (VSOD). While many works have achieved great success in this field, a deeper insight into its dynamic nature should be developed. In this work, we aim to answer the following questions: How can a model adjust itself to dynamic variations as well as perceive fine differences in the real-world environment; How are the temporal dynamics well introduced into spatial information over time? To this end, we propose a dynamic context-sensitive filtering network (DCFNet) equipped with a dynamic context-sensitive filtering module (DCFM) and an effective bidirectional dynamic fusion strategy. The proposed DCFM sheds new light on dynamic filter generation by extracting location-related affinities between consecutive frames. Our bidirectional dynamic fusion strategy encourages the interaction of spatial and temporal information in a dynamic manner. Experimental results demonstrate that our proposed method can achieve state-of-the-art performance on most VSOD datasets while ensuring a real-time speed of 28 fps. The source code is publicly available at https://github.com/OIPLab-DUT/DCFNet.
['Zhongxuan Luo', 'Huchuan Lu', 'Jingjing Li', 'Wei Ji', 'Shunyu Yao', 'Yongri Piao', 'Yifei Wang', 'Jie Liu', 'Miao Zhang']
2021-01-01
null
null
null
iccv-2021-1
['video-salient-object-detection', 'video-polyp-segmentation']
['computer-vision', 'computer-vision']
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[9.418055534362793, -0.4368710219860077]
f6f84f09-297b-4e37-922f-5d0a47b1262b
video-colorization-with-pre-trained-text-to
2306.01732
null
https://arxiv.org/abs/2306.01732v1
https://arxiv.org/pdf/2306.01732v1.pdf
Video Colorization with Pre-trained Text-to-Image Diffusion Models
Video colorization is a challenging task that involves inferring plausible and temporally consistent colors for grayscale frames. In this paper, we present ColorDiffuser, an adaptation of a pre-trained text-to-image latent diffusion model for video colorization. With the proposed adapter-based approach, we repropose the pre-trained text-to-image model to accept input grayscale video frames, with the optional text description, for video colorization. To enhance the temporal coherence and maintain the vividness of colorization across frames, we propose two novel techniques: the Color Propagation Attention and Alternated Sampling Strategy. Color Propagation Attention enables the model to refine its colorization decision based on a reference latent frame, while Alternated Sampling Strategy captures spatiotemporal dependencies by using the next and previous adjacent latent frames alternatively as reference during the generative diffusion sampling steps. This encourages bidirectional color information propagation between adjacent video frames, leading to improved color consistency across frames. We conduct extensive experiments on benchmark datasets, and the results demonstrate the effectiveness of our proposed framework. The evaluations show that ColorDiffuser achieves state-of-the-art performance in video colorization, surpassing existing methods in terms of color fidelity, temporal consistency, and visual quality.
['Tien-Tsin Wong', 'Chengze Li', 'Jinbo Xing', 'Minshan Xie', 'Hanyuan Liu']
2023-06-02
null
null
null
null
['colorization']
['computer-vision']
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[11.141531944274902, -1.1852284669876099]
15ea292b-8390-4d1b-b654-7da21b68ea3f
semi-supervised-credit-card-fraud-detection
null
null
https://doi.org/10.1609/aaai.v37i12.26702
https://ojs.aaai.org/index.php/AAAI/article/view/26702/26474
Semi-supervised Credit Card Fraud Detection via Attribute-driven Graph Representation
Credit card fraud incurs a considerable cost for both cardholders and issuing banks. Contemporary methods apply machine learning-based classifiers to detect fraudulent behavior from labeled transaction records. But labeled data are usually a small proportion of billions of real transactions due to expensive labeling costs, which implies that they do not well exploit many natural features from unlabeled data. Therefore, we propose a semi-supervised graph neural network for fraud detection. Specifically, we leverage transaction records to construct a temporal transaction graph, which is composed of temporal transactions (nodes) and interactions (edges) among them. Then we pass messages among the nodes through a Gated Temporal Attention Network (GTAN) to learn the transaction representation. We further model the fraud patterns through risk propagation among transactions. The extensive experiments are conducted on a real-world transaction dataset and two publicly available fraud detection datasets. The result shows that our proposed method, namely GTAN, outperforms other state-of-the-art baselines on three fraud detection datasets. Semi-supervised experiments demonstrate the excellent fraud detection performance of our model with only a tiny proportion of labeled data.
['Yefeng Zheng', 'Ling Chen', 'Yi Ouyang', 'Ruihui Zhao', 'Enxia Li', 'Dawei Cheng', 'Mingzhi Zhu', 'Sheng Xiang']
2023-06-26
null
null
null
aaai-2023-6
['fraud-detection']
['miscellaneous']
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[7.326705455780029, 5.809619903564453]
507932d6-0dd4-4511-8ea6-308f0a87c7dc
multimodal-garment-designer-human-centric
2304.02051
null
https://arxiv.org/abs/2304.02051v1
https://arxiv.org/pdf/2304.02051v1.pdf
Multimodal Garment Designer: Human-Centric Latent Diffusion Models for Fashion Image Editing
Fashion illustration is used by designers to communicate their vision and to bring the design idea from conceptualization to realization, showing how clothes interact with the human body. In this context, computer vision can thus be used to improve the fashion design process. Differently from previous works that mainly focused on the virtual try-on of garments, we propose the task of multimodal-conditioned fashion image editing, guiding the generation of human-centric fashion images by following multimodal prompts, such as text, human body poses, and garment sketches. We tackle this problem by proposing a new architecture based on latent diffusion models, an approach that has not been used before in the fashion domain. Given the lack of existing datasets suitable for the task, we also extend two existing fashion datasets, namely Dress Code and VITON-HD, with multimodal annotations collected in a semi-automatic manner. Experimental results on these new datasets demonstrate the effectiveness of our proposal, both in terms of realism and coherence with the given multimodal inputs. Source code and collected multimodal annotations will be publicly released at: https://github.com/aimagelab/multimodal-garment-designer.
['Rita Cucchiara', 'Marco Bertini', 'Marcella Cornia', 'Giuseppe Cartella', 'Davide Morelli', 'Alberto Baldrati']
2023-04-04
null
null
null
null
['multimodal-fashion-image-editing']
['computer-vision']
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[11.71531867980957, -0.6738238334655762]
e2b23958-7393-4504-a689-3d925ec75c2e
phd-thesis-exploring-the-role-of-self
2306.1465
null
https://arxiv.org/abs/2306.14650v2
https://arxiv.org/pdf/2306.14650v2.pdf
PhD Thesis: Exploring the role of (self-)attention in cognitive and computer vision architecture
We investigate the role of attention and memory in complex reasoning tasks. We analyze Transformer-based self-attention as a model and extend it with memory. By studying a synthetic visual reasoning test, we refine the taxonomy of reasoning tasks. Incorporating self-attention with ResNet50, we enhance feature maps using feature-based and spatial attention, achieving efficient solving of challenging visual reasoning tasks. Our findings contribute to understanding the attentional needs of SVRT tasks. Additionally, we propose GAMR, a cognitive architecture combining attention and memory, inspired by active vision theory. GAMR outperforms other architectures in sample efficiency, robustness, and compositionality, and shows zero-shot generalization on new reasoning tasks.
['Mohit Vaishnav']
2023-06-26
null
null
null
null
['visual-reasoning', 'visual-reasoning']
['computer-vision', 'reasoning']
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[10.628929138183594, 2.237187623977661]
bd3b8fd5-0630-4f58-a208-0e4727b2dfd9
superocr-a-conversion-from-optical-character
2012.02033
null
https://arxiv.org/abs/2012.02033v1
https://arxiv.org/pdf/2012.02033v1.pdf
SuperOCR: A Conversion from Optical Character Recognition to Image Captioning
Optical Character Recognition (OCR) has many real world applications. The existing methods normally detect where the characters are, and then recognize the character for each detected location. Thus the accuracy of characters recognition is impacted by the performance of characters detection. In this paper, we propose a method for recognizing characters without detecting the location of each character. This is done by converting the OCR task into an image captioning task. One advantage of the proposed method is that the labeled bounding boxes for the characters are not needed during training. The experimental results show the proposed method outperforms the existing methods on both the license plate recognition and the watermeter character recognition tasks. The proposed method is also deployed into a low-power (300mW) CNN accelerator chip connected to a Raspberry Pi 3 for on-device applications.
['Lin Yang', 'Hao Sha', 'Michael Lin', 'Baohua Sun']
2020-11-21
null
null
null
null
['license-plate-recognition']
['computer-vision']
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[9.843330383300781, -4.929326057434082]
5d5229c5-f6be-4937-b155-2495de52d3ab
decoding-visemes-improving-machine-lipreading
1710.01288
null
http://arxiv.org/abs/1710.01288v1
http://arxiv.org/pdf/1710.01288v1.pdf
Decoding visemes: improving machine lipreading
Machine lipreading (MLR) is speech recognition from visual cues and a niche research problem in speech processing & computer vision. Current challenges fall into two groups: the content of the video, such as rate of speech or; the parameters of the video recording e.g, video resolution. We show that HD video is not needed to successfully lipread with a computer. The term "viseme" is used in machine lipreading to represent a visual cue or gesture which corresponds to a subgroup of phonemes where the phonemes are visually indistinguishable. A phoneme is the smallest sound one can utter, because there are more phonemes per viseme, maps between units show a many-to-one relationship. Many maps have been presented, we compare these and our results show Lee's is best. We propose a new method of speaker-dependent phoneme-to-viseme maps and compare these to Lee's. Our results show the sensitivity of phoneme clustering and we use our new knowledge to augment a conventional MLR system. It has been observed in MLR, that classifiers need training on test subjects to achieve accuracy. Thus machine lipreading is highly speaker-dependent. Conversely speaker independence is robust classification of non-training speakers. We investigate the dependence of phoneme-to-viseme maps between speakers and show there is not a high variability of visemes, but there is high variability in trajectory between visemes of individual speakers with the same ground truth. This implies a dependency upon the number of visemes within each set for each individual. We show that prior phoneme-to-viseme maps rarely have enough visemes and the optimal size, which varies by speaker, ranges from 11-35. Finally we decode from visemes back to phonemes and into words. Our novel approach uses the optimum range visemes within hierarchical training of phoneme classifiers and demonstrates a significant increase in classification accuracy.
['Helen L. Bear']
2017-10-03
null
null
null
null
['lipreading']
['computer-vision']
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[14.308297157287598, 5.003406524658203]
b9f20393-93a8-451e-b96e-7496008a733a
update-3-0-to-puma-the-porous-microstructure
null
null
https://www.sciencedirect.com/science/article/pii/S235271102100090X
https://www.sciencedirect.com/science/article/pii/S235271102100090X/pdfft?isDTMRedir=true&download=true
Update 3.0 to “PuMA: The Porous Microstructure Analysis software”
A major update of the Porous Microstructure Analysis (PuMA) software is presented. PuMA is a framework for computing effective material properties and response based on material microstructures. Version 3.0 of the software extends the PuMA capabilities to include computation of anisotropic conductivity, elasticity, permeability, per-voxel material or fiber orientation estimation, as well as expanded computational material generation capabilities. Version 3.0 also introduces pumapy, a Python version of the PuMA software.
['Nagi N. Mansour', 'Arnaud Borner', 'Francesco Panerai', 'John M. Thornton', 'Federico Semeraro', 'Joseph C. Ferguson']
2021-07-19
null
null
null
softwarex-2021-7
['physical-simulations']
['miscellaneous']
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[6.393115997314453, 3.335890293121338]
041ca111-b997-4b38-9779-e862e4a9f361
meaformer-multi-modal-entity-alignment
2212.14454
null
https://arxiv.org/abs/2212.14454v3
https://arxiv.org/pdf/2212.14454v3.pdf
MEAformer: Multi-modal Entity Alignment Transformer for Meta Modality Hybrid
As an important variant of entity alignment (EA), multi-modal entity alignment (MMEA) aims to discover identical entities across different knowledge graphs (KGs) with relevant images attached. We noticed that current MMEA algorithms all globally adopt the KG-level modality fusion strategies for multi-modal entity representation but ignore the variation in modality preferences for individual entities, hurting the robustness to potential noise involved in modalities (e.g., blurry images and relations). In this paper, we present MEAformer, a multi-modal entity alignment transformer approach for meta modality hybrid, which dynamically predicts the mutual correlation coefficients among modalities for entity-level feature aggregation. A modal-aware hard entity replay strategy is further proposed for addressing vague entity details. Experimental results show that our model not only achieves SOTA performance on multiple training scenarios including supervised, unsupervised, iterative, and low resource, but also has a comparable number of parameters, optimistic speed, and good interpretability. Our code and data are available at https://github.com/zjukg/MEAformer.
['Yuxia Geng', 'Yichi Zhang', 'Huajun Chen', 'Wenting Song', 'Jeff Z. Pan', 'Yufeng Huang', 'Yin Fang', 'Lingbing Guo', 'Wen Zhang', 'Jiaoyan Chen', 'Zhuo Chen']
2022-12-29
null
null
null
null
['multi-modal-entity-alignment', 'entity-alignment', 'entity-alignment']
['knowledge-base', 'knowledge-base', 'natural-language-processing']
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