Overview and Discussion of the Competition on Legal Information, Extraction/Entailment (COLIEE) 2023

Randy Goebel (), Yoshinobu Kano (), Mi-Young Kim (), Juliano Rabelo (), Ken Satoh () and Masaharu Yoshioka ()
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Randy Goebel: University of Alberta
Yoshinobu Kano: Shizuoka University
Mi-Young Kim: University of Alberta
Juliano Rabelo: University of Alberta
Ken Satoh: National Institute of Informatics
Masaharu Yoshioka: Hokkaido University

The Review of Socionetwork Strategies, 2024, vol. 18, issue 1, 27-47

Abstract: Abstract We summarize the 10th Competition on Legal Information Extraction and Entailment. In this tenth edition, the competition included four tasks on case law and statute law. The case law component includes an information retrieval task (Task 1), and the confirmation of an entailment relation between an existing case and a selected unseen case (Task 2). The statute law component includes an information retrieval task (Task 3), and an entailment/question-answering task based on retrieved civil code statutes (Task 4). Participation was open to any group based on any approach. Ten different teams participated in the case law competition tasks, most of them in more than one task. We received results from 8 teams for Task 1 (22 runs) and seven teams for Task 2 (18 runs). On the statute law task, there were 9 different teams participating, most in more than one task. 6 teams submitted a total of 16 runs for Task 3, and 9 teams submitted a total of 26 runs for Task 4. We describe the variety of approaches, our official evaluation, and analysis of our data and submission results.

Keywords: COLIEE2023; Legal information retrieval; Legal information entailment (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s12626-023-00152-0

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