Overview of the CAIL 2023 Argument Mining Track

TL;DR

The paper provides a comprehensive overview of the CAIL 2023 Argument Mining Track, detailing its tasks, dataset, and approaches, highlighting the use of language models with innovative strategies for argument pair extraction in legal dialogs.

Contribution

It introduces the new CAIL2023-ArgMine dataset and summarizes the top submissions' methods and results for argument mining in Chinese legal trial dialogs.

Findings

Submissions achieved improved argument pair extraction accuracy.

Language models with specialized strategies enhanced performance.

The dataset supports future research in legal argument mining.

Abstract

We give a detailed overview of the CAIL 2023 Argument Mining Track, one of the Chinese AI and Law Challenge (CAIL) 2023 tracks. The main goal of the track is to identify and extract interacting argument pairs in trial dialogs. It mainly uses summarized judgment documents but can also refer to trial recordings. The track consists of two stages, and we introduce the tasks designed for each stage; we also extend the data from previous events into a new dataset -- CAIL2023-ArgMine -- with annotated new cases from various causes of action. We outline several submissions that achieve the best results, including their methods for different stages. While all submissions rely on language models, they have incorporated strategies that may benefit future work in this field.