Code for the paper "LEDGAR: A Large-Scale Multilabel Corpus for Text Classification of Legal Provisions in Contracts"

Link to the paper: https://www.aclweb.org/anthology/2020.lrec-1.155.pdf

Requirements:

• Python 3.7+
• to install requirements: pip install -r requirements.txt

Data:

• The full corpus as a zipped jsonl file is located here.

• for the MLP (+Attention) classification experiments you will also need pretrained MUSE embeddings from here.

• prepare word embeddings: python convert_embedding_txt.py /path/to/wiki.multi.en.vec this will create wiki.multi.en.vec_data.npy and wiki.multi.en.vec_vocab.json in the same folder.

Usage:

• creating the different sub-corpora: python corpus_analysis_and_sampling.py /path/to/LEDGAR_2016-2019_clean.jsonl

• to run the classification baselines, navigate do the classification sub folder: cd classification

• Logistic Regression: python classification_baselines.py /path/to/sub-corpus.jsonl

• MLP: python mlp_classifier.py /path/to/sub-corpus.jsonl /path/to/wiki.multi.en.vec_data.npy /path/to/wiki.multi.en.vec_vocab.json

• MLP + Attention: python mlp_classifier_attention.py /path/to/sub-corpus.jsonl /path/to/wiki.multi.en.vec_data.npy /path/to/wiki.multi.en.vec_vocab.json

• DistilBert: python distilbert_baseline.py --data /path/to/sub-corpus.jsonl --mode train for more detailed instructions consult this readme.

Citation:

Thanks for citing our paper should you use the corpus!

@inproceedings{tuggener2020ledgar,
  title={LEDGAR: a large-scale multi-label corpus for text classification of legal provisions in contracts},
  author={Tuggener, Don and von D{\"a}niken, Pius and Peetz, Thomas and Cieliebak, Mark},
  booktitle={12th Language Resources and Evaluation Conference (LREC) 2020},
  pages={1228--1234},
  year={2020},
  organization={European Language Resources Association}
}