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Paper · 2105.12544 · ACL · 2021

Language Model as an Annotator: Exploring DialoGPT for Dialogue Summarization

Ting Liu, Bing Qin, Libo Qin, Xiachong Feng, Xiaocheng Feng

arXiv · PDF · Open in the Atlas

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Abstract

Current dialogue summarization systems usually encode the text with a number of general semantic features (e.g., keywords and topics) to gain more powerful dialogue modeling capabilities. However, these features are obtained via open-domain toolkits that are dialogagnostic or heavily relied on human annotations. In this paper, we show how DialoGPT (Zhang et al., 2020b), a pre-trained model for conversational response generation, can be developed as an unsupervised dialogue annotator, which takes advantage of dialogue background knowledge encoded in DialoGPT. We apply DialoGPT to label three types of features on two dialogue summarization datasets, SAM-Sum and AMI, and employ pre-trained and non pre-trained models as our summarizers. Experimental results show that our proposed method can obtain remarkable improvements on both datasets and achieves new state-of-theart performance on the SAMSum dataset 1 .

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