BB25HLegalSum: Leveraging BM25 and BERT-Based Clustering for the Summarization of Legal Documents

Leonardo de Andrade, Karin Becker


Abstract
Legal document summarization aims to provide a clear understanding of the main points and arguments in a legal document, contributing to the efficiency of the judicial system. In this paper, we propose BB25HLegalSum, a method that combines BERT clusters with the BM25 algorithm to summarize legal documents and present them to users with highlighted important information. The process involves selecting unique, relevant sentences from the original document, clustering them to find sentences about a similar subject, combining them to generate a summary according to three strategies, and highlighting them to the user in the original document. We outperformed baseline techniques using the BillSum dataset, a widely used benchmark in legal document summarization. Legal workers positively assessed the highlighted presentation.
Anthology ID:
2023.ranlp-1.29
Volume:
Proceedings of the 14th International Conference on Recent Advances in Natural Language Processing
Month:
September
Year:
2023
Address:
Varna, Bulgaria
Editors:
Ruslan Mitkov, Galia Angelova
Venue:
RANLP
SIG:
Publisher:
INCOMA Ltd., Shoumen, Bulgaria
Note:
Pages:
255–263
Language:
URL:
https://aclanthology.org/2023.ranlp-1.29
DOI:
Bibkey:
Cite (ACL):
Leonardo de Andrade and Karin Becker. 2023. BB25HLegalSum: Leveraging BM25 and BERT-Based Clustering for the Summarization of Legal Documents. In Proceedings of the 14th International Conference on Recent Advances in Natural Language Processing, pages 255–263, Varna, Bulgaria. INCOMA Ltd., Shoumen, Bulgaria.
Cite (Informal):
BB25HLegalSum: Leveraging BM25 and BERT-Based Clustering for the Summarization of Legal Documents (de Andrade & Becker, RANLP 2023)
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PDF:
https://aclanthology.org/2023.ranlp-1.29.pdf