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Controllable Abstractive Dialogue Summarization with Sketch Supervision

Wu, CS; Liu, L; Liu, W; Stenetorp, P; Xiong, C; (2021) Controllable Abstractive Dialogue Summarization with Sketch Supervision. In: Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021. (pp. pp. 5108-5122). Association for Computational Linguistics Green open access

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Abstract

In this paper, we aim to improve abstractive dialogue summarization quality and, at the same time, enable granularity control. Our model has two primary components and stages: 1) a two-stage generation strategy that generates a preliminary summary sketch serving as the basis for the final summary. This summary sketch provides a weakly supervised signal in the form of pseudo-labeled interrogative pronoun categories and key phrases extracted using a constituency parser. 2) A simple strategy to control the granularity of the final summary, in that our model can automatically determine or control the number of generated summary sentences for a given dialogue by predicting and highlighting different text spans from the source text. Our model achieves state-of-the-art performance on the largest dialogue summarization corpus SAMSum, with as high as 50.79 in ROUGE-L score. In addition, we conduct a case study and show competitive human evaluation results and controllability to human-annotated summaries.

Type: Proceedings paper
Title: Controllable Abstractive Dialogue Summarization with Sketch Supervision
ISBN-13: 9781954085541
Open access status: An open access version is available from UCL Discovery
DOI: 10.18653/v1/2021.findings-acl.454
Publisher version: http://dx.doi.org/10.18653/v1/2021.findings-acl.45...
Language: English
Additional information: © 2022 ACL. Original content in this paper is licensed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) Licence (https://creativecommons.org/licenses/by/4.0/).
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10153278
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