Update README.md

README.md

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 license: apache-2.0
 task_categories:
 - sentence-similarity
+- patent-similarity
 language:
 - en
 pretty_name: PaECTER Dataset
@@ -43,6 +44,19 @@ configs:
   - split: test
     path: testset/test.jsonl
 ---
+# PaECTER Dataset
+
+The dataset contains publication numbers of patents used to train, validate, and test our models [PaECTER](https://huggingface.co/mpi-inno-comp/paecter) and [PAT SPECTER](https://huggingface.co/mpi-inno-comp/pat_specter). These publication numbers were taken from the EPO's PATSTAT database (2023 Spring version). We used the titles and abstracts of these patents as provided in PATSTAT for training and other purposes. 
+
+The combined training and validation dataset comprises 300,000 EPO/PCT patents as focal (query) patents. Each focal patent is associated with 5 triplets, each including one positive (pos) and one negative (neg) citation:
+
+- Training set: Consists of 255,000 focal patents, resulting in 1,275,000 rows (5 triplets per focal patent).
+- Validation set: Comprises 45,000 focal patents, resulting in 225,000 rows. 
+
+The test dataset contains 1000 rows. Each row represents a focal patent, its 5 positive citations, and 25 randomly selected unrelated patents as negative citations.
+
+For more details, please refer to our paper, [PaECTER: Patent-level Representation Learning using Citation-informed Transformers](https://arxiv.org/abs/2402.19411)
+
 ## Citing & Authors
 
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