Enhancing Large Language Model with Decomposed Reasoning for Emotion Cause Pair Extraction

• URL: http://arxiv.org/abs/2401.17716v1
• Date: Wed, 31 Jan 2024 10:20:01 GMT
• Title: Enhancing Large Language Model with Decomposed Reasoning for Emotion Cause Pair Extraction
• Authors: Jialiang Wu, Yi Shen, Ziheng Zhang, Longjun Cai
• Abstract summary: Emotion-Cause Pair Extraction (ECPE) involves extracting clause pairs representing emotions and their causes in a document. Inspired by recent work, we explore leveraging large language model (LLM) to address ECPE task without additional training. We introduce chain-of-thought to mimic human cognitive process and propose the Decomposed Emotion-Cause Chain (DECC) framework.
• Score: 13.245873138716044
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Emotion-Cause Pair Extraction (ECPE) involves extracting clause pairs representing emotions and their causes in a document. Existing methods tend to overfit spurious correlations, such as positional bias in existing benchmark datasets, rather than capturing semantic features. Inspired by recent work, we explore leveraging large language model (LLM) to address ECPE task without additional training. Despite strong capabilities, LLMs suffer from uncontrollable outputs, resulting in mediocre performance. To address this, we introduce chain-of-thought to mimic human cognitive process and propose the Decomposed Emotion-Cause Chain (DECC) framework. Combining inducing inference and logical pruning, DECC guides LLMs to tackle ECPE task. We further enhance the framework by incorporating in-context learning. Experiment results demonstrate the strength of DECC compared to state-of-the-art supervised fine-tuning methods. Finally, we analyze the effectiveness of each component and the robustness of the method in various scenarios, including different LLM bases, rebalanced datasets, and multi-pair extraction.

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