Are Large Language Models Robust Coreference Resolvers?

• URL: http://arxiv.org/abs/2305.14489v2
• Date: Wed, 15 Nov 2023 04:51:27 GMT
• Title: Are Large Language Models Robust Coreference Resolvers?
• Authors: Nghia T. Le, Alan Ritter
• Abstract summary: We show that prompting for coreference can outperform current unsupervised coreference systems. Further investigations reveal that instruction-tuned LMs generalize surprisingly well across domains, languages, and time periods.
• Score: 17.60248310475889
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Recent work on extending coreference resolution across domains and languages relies on annotated data in both the target domain and language. At the same time, pre-trained large language models (LMs) have been reported to exhibit strong zero- and few-shot learning abilities across a wide range of NLP tasks. However, prior work mostly studied this ability using artificial sentence-level datasets such as the Winograd Schema Challenge. In this paper, we assess the feasibility of prompt-based coreference resolution by evaluating instruction-tuned language models on difficult, linguistically-complex coreference benchmarks (e.g., CoNLL-2012). We show that prompting for coreference can outperform current unsupervised coreference systems, although this approach appears to be reliant on high-quality mention detectors. Further investigations reveal that instruction-tuned LMs generalize surprisingly well across domains, languages, and time periods; yet continued fine-tuning of neural models should still be preferred if small amounts of annotated examples are available.

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