Cause-Aware Empathetic Response Generation via Chain-of-Thought Fine-Tuning

• URL: http://arxiv.org/abs/2408.11599v1
• Date: Wed, 21 Aug 2024 13:11:03 GMT
• Title: Cause-Aware Empathetic Response Generation via Chain-of-Thought Fine-Tuning
• Authors: Xinhao Chen, Chong Yang, Man Lan, Li Cai, Yang Chen, Tu Hu, Xinlin Zhuang, Aimin Zhou,
• Abstract summary: Empathetic response generation endows agents with the capability to comprehend dialogue contexts and react to expressed emotions. Previous works predominantly focus on leveraging the speaker's emotional labels, but ignore the importance of emotion cause reasoning. We propose a cause-aware empathetic generation approach by integrating emotions and causes through a well-designed Chain-of-Thought prompt.
• Score: 12.766893968788263
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Empathetic response generation endows agents with the capability to comprehend dialogue contexts and react to expressed emotions. Previous works predominantly focus on leveraging the speaker's emotional labels, but ignore the importance of emotion cause reasoning in empathetic response generation, which hinders the model's capacity for further affective understanding and cognitive inference. In this paper, we propose a cause-aware empathetic generation approach by integrating emotions and causes through a well-designed Chain-of-Thought (CoT) prompt on Large Language Models (LLMs). Our approach can greatly promote LLMs' performance of empathy by instruction tuning and enhancing the role awareness of an empathetic listener in the prompt. Additionally, we propose to incorporate cause-oriented external knowledge from COMET into the prompt, which improves the diversity of generation and alleviates conflicts between internal and external knowledge at the same time. Experimental results on the benchmark dataset demonstrate that our approach on LLaMA-7b achieves state-of-the-art performance in both automatic and human evaluations.

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