LLM with Relation Classifier for Document-Level Relation Extraction

• URL: http://arxiv.org/abs/2408.13889v1
• Date: Sun, 25 Aug 2024 16:43:19 GMT
• Title: LLM with Relation Classifier for Document-Level Relation Extraction
• Authors: Xingzuo Li, Kehai Chen, Yunfei Long, Min Zhang,
• Abstract summary: Large language models (LLMs) create a new paradigm for natural language processing. This paper investigates the causes of this performance gap, identifying the dispersion of attention by LLMs due to entity pairs without relations as a primary factor. Experiments on DocRE benchmarks reveal that our method significantly outperforms recent LLM-based DocRE models and achieves competitive performance with several leading traditional DocRE models.
• Score: 25.587850398830252
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large language models (LLMs) create a new paradigm for natural language processing. Despite their advancement, LLM-based methods still lag behind traditional approaches in document-level relation extraction (DocRE), a critical task for understanding complex entity relations. This paper investigates the causes of this performance gap, identifying the dispersion of attention by LLMs due to entity pairs without relations as a primary factor. We then introduce a novel classifier-LLM approach to DocRE. The proposed approach begins with a classifier specifically designed to select entity pair candidates exhibiting potential relations and thereby feeds them to LLM for the final relation extraction. This method ensures that during inference, the LLM's focus is directed primarily at entity pairs with relations. Experiments on DocRE benchmarks reveal that our method significantly outperforms recent LLM-based DocRE models and achieves competitive performance with several leading traditional DocRE models.

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