metadata
language:
- pt
tags:
- generated_from_trainer
datasets:
- lener_br
metrics:
- precision
- recall
- f1
- accuracy
model-index:
- name: checkpoints
results:
- task:
name: Token Classification
type: token-classification
dataset:
name: lener_br
type: lener_br
metrics:
- name: F1
type: f1
value: 0.9082022949426265
- name: Precision
type: precision
value: 0.8975220495590088
- name: Recall
type: recall
value: 0.9191397849462366
- name: Accuracy
type: accuracy
value: 0.9808310603867311
- name: Loss
type: loss
value: 0.1228889599442482
widget:
- text: >-
Ao Instituto Médico Legal da jurisdição do acidente ou da residência
cumpre fornecer, no prazo de 90 dias, laudo à vítima (art. 5, § 5, Lei n.
6.194/74 de 19 de dezembro de 1974), função técnica que pode ser suprida
por prova pericial realizada por ordem do juízo da causa, ou por prova
técnica realizada no âmbito administrativo que se mostre coerente com os
demais elementos de prova constante dos autos.
- text: >-
Acrescento que não há de se falar em violação do artigo 114, § 3º, da
Constituição Federal, posto que referido dispositivo revela-se
impertinente, tratando da possibilidade de ajuizamento de dissídio
coletivo pelo Ministério Público do Trabalho nos casos de greve em
atividade essencial.
- text: >-
Dispõe sobre o estágio de estudantes; altera a redação do art. 428 da
Consolidação das Leis do Trabalho – CLT, aprovada pelo Decreto-Lei no
5.452, de 1o de maio de 1943, e a Lei no 9.394, de 20 de dezembro de 1996;
revoga as Leis nos 6.494, de 7 de dezembro de 1977, e 8.859, de 23 de
março de 1994, o parágrafo único do art. 82 da Lei no 9.394, de 20 de
dezembro de 1996, e o art. 6o da Medida Provisória no 2.164-41, de 24 de
agosto de 2001; e dá outras providências.
(BERT large) NER model in the legal domain in Portuguese (LeNER-Br)
ner-bert-large-portuguese-cased-lenerbr is a NER model (token classification) in the legal domain in Portuguese that was finetuned on 20/12/2021 in Google Colab from the model pierreguillou/bert-large-cased-pt-lenerbr on the dataset LeNER_br by using a NER objective.
Due to the small size of the finetuning dataset, the model overfitted before to reach the end of training. Here are the overall final metrics on the validation dataset (note: see the paragraph "Validation metrics by Named Entity" to get detailed metrics):
- f1: 0.9082022949426265
- precision: 0.8975220495590088
- recall: 0.9191397849462366
- accuracy: 0.9808310603867311
- loss: 0.1228889599442482
Note: the model pierreguillou/bert-large-cased-pt-lenerbr is a language model that was created through the finetuning of the model BERTimbau large on the dataset LeNER-Br language modeling by using a MASK objective. This first specialization of the language model before finetuning on the NER task allows to get a better NER model.
Widget & APP
You can test this model into the widget of this page.
Using the model for inference in production
# install pytorch: check https://pytorch.org/
# !pip install transformers
from transformers import AutoModelForTokenClassification, AutoTokenizer
import torch
# parameters
model_name = "ner-bert-large-portuguese-cased-lenebr"
model = AutoModelForTokenClassification.from_pretrained(model_name)
tokenizer = AutoTokenizer.from_pretrained(model_name)
input_text = "Acrescento que não há de se falar em violação do artigo 114, § 3º, da Constituição Federal, posto que referido dispositivo revela-se impertinente, tratando da possibilidade de ajuizamento de dissídio coletivo pelo Ministério Público do Trabalho nos casos de greve em atividade essencial."
# tokenization
inputs = tokenizer(input_text, max_length=512, truncation=True, return_tensors="pt")
tokens = inputs.tokens()
# get predictions
outputs = model(**inputs).logits
predictions = torch.argmax(outputs, dim=2)
# print predictions
for token, prediction in zip(tokens, predictions[0].numpy()):
print((token, model.config.id2label[prediction]))
You can use pipeline, too. However, it seems to have an issue regarding to the max_length of the input sequence.
!pip install transformers
import transformers
from transformers import pipeline
model_name = "ner-bert-large-portuguese-cased-lenebr"
ner = pipeline(
"ner",
model=model_name
)
ner(input_text)
Training procedure
Notebook
The notebook of finetuning (HuggingFace_Notebook_token_classification_NER_LeNER_Br.ipynb) is in github.
Hyperparameters
batch, learning rate...
- per_device_batch_size = 2
- gradient_accumulation_steps = 2
- learning_rate = 2e-5
- num_train_epochs = 10
- weight_decay = 0.01
- optimizer = AdamW
- betas = (0.9,0.999)
- epsilon = 1e-08
- lr_scheduler_type = linear
- seed = 42
save model & load best model
- save_total_limit = 7
- logging_steps = 500
- eval_steps = logging_steps
- evaluation_strategy = 'steps'
- logging_strategy = 'steps'
- save_strategy = 'steps'
- save_steps = logging_steps
- load_best_model_at_end = True
- fp16 = True
get best model through a metric
- metric_for_best_model = 'eval_f1'
- greater_is_better = True
Training results
Num examples = 7828
Num Epochs = 20
Instantaneous batch size per device = 2
Total train batch size (w. parallel, distributed & accumulation) = 4
Gradient Accumulation steps = 2
Total optimization steps = 39140
Step Training Loss Validation Loss Precision Recall F1 Accuracy
500 0.250000 0.140582 0.760833 0.770323 0.765548 0.963125
1000 0.076200 0.117882 0.829082 0.817849 0.823428 0.966569
1500 0.082400 0.150047 0.679610 0.914624 0.779795 0.957213
2000 0.047500 0.133443 0.817678 0.857419 0.837077 0.969190
2500 0.034200 0.230139 0.895672 0.845591 0.869912 0.964070
3000 0.033800 0.108022 0.859225 0.887312 0.873043 0.973700
3500 0.030100 0.113467 0.855747 0.885376 0.870310 0.975879
4000 0.029900 0.118619 0.850207 0.884946 0.867229 0.974477
4500 0.022500 0.124327 0.841048 0.890968 0.865288 0.975041
5000 0.020200 0.129294 0.801538 0.918925 0.856227 0.968077
5500 0.019700 0.128344 0.814222 0.908602 0.858827 0.969250
6000 0.024600 0.182563 0.908087 0.866882 0.887006 0.968565
6500 0.012600 0.159217 0.829883 0.913763 0.869806 0.969357
7000 0.020600 0.183726 0.854557 0.893333 0.873515 0.966447
7500 0.014400 0.141395 0.777716 0.905161 0.836613 0.966828
8000 0.013400 0.139378 0.873042 0.899140 0.885899 0.975772
8500 0.014700 0.142521 0.864152 0.901505 0.882433 0.976366
9000 0.010900 0.122889 0.897522 0.919140 0.908202 0.980831
9500 0.013500 0.143407 0.816580 0.906667 0.859268 0.973395
10000 0.010400 0.144946 0.835608 0.908387 0.870479 0.974629
10500 0.007800 0.143086 0.847587 0.910108 0.877735 0.975985
11000 0.008200 0.156379 0.873778 0.884301 0.879008 0.976321
11500 0.008200 0.133356 0.901193 0.910108 0.905628 0.980328
12000 0.006900 0.133476 0.892202 0.920215 0.905992 0.980572
12500 0.006900 0.129991 0.890159 0.904516 0.897280 0.978683
Validation metrics by Named Entity
{'JURISPRUDENCIA': {'f1': 0.8135593220338984,
'number': 657,
'precision': 0.865979381443299,
'recall': 0.7671232876712328},
'LEGISLACAO': {'f1': 0.8888888888888888,
'number': 571,
'precision': 0.8952042628774423,
'recall': 0.882661996497373},
'LOCAL': {'f1': 0.850467289719626,
'number': 194,
'precision': 0.7777777777777778,
'recall': 0.9381443298969072},
'ORGANIZACAO': {'f1': 0.8740635033892258,
'number': 1340,
'precision': 0.8373205741626795,
'recall': 0.914179104477612},
'PESSOA': {'f1': 0.9836677554829678,
'number': 1072,
'precision': 0.9841269841269841,
'recall': 0.9832089552238806},
'TEMPO': {'f1': 0.9669669669669669,
'number': 816,
'precision': 0.9481743227326266,
'recall': 0.9865196078431373},
'overall_accuracy': 0.9808310603867311,
'overall_f1': 0.9082022949426265,
'overall_precision': 0.8975220495590088,
'overall_recall': 0.9191397849462366}