CuSINeS: Curriculum-driven Structure Induced Negative Sampling for Statutory Article Retrieval

• URL: http://arxiv.org/abs/2404.00590v1
• Date: Sun, 31 Mar 2024 07:49:23 GMT
• Title: CuSINeS: Curriculum-driven Structure Induced Negative Sampling for Statutory Article Retrieval
• Authors: T. Y. S. S Santosh, Kristina Kaiser, Matthias Grabmair,
• Abstract summary: CuSINeS is a negative sampling approach to enhance the performance of Statutory Article Retrieval (SAR) It employs a curriculum-based negative sampling strategy guiding the model to focus on easier negatives. It also leverages the hierarchical and sequential information derived from the structural organization of statutes to evaluate the difficulty of samples.
• Score: 1.3723120574076126
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we introduce CuSINeS, a negative sampling approach to enhance the performance of Statutory Article Retrieval (SAR). CuSINeS offers three key contributions. Firstly, it employs a curriculum-based negative sampling strategy guiding the model to focus on easier negatives initially and progressively tackle more difficult ones. Secondly, it leverages the hierarchical and sequential information derived from the structural organization of statutes to evaluate the difficulty of samples. Lastly, it introduces a dynamic semantic difficulty assessment using the being-trained model itself, surpassing conventional static methods like BM25, adapting the negatives to the model's evolving competence. Experimental results on a real-world expert-annotated SAR dataset validate the effectiveness of CuSINeS across four different baselines, demonstrating its versatility.

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