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Controllable Summarization with Constrained Markov Decision Process

delete2021-11-05
delete11
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OA
AI
H
Hou Pong Chan *
L
Lu Wang
I
Irwin King
DOI:10.1162/tacl_a_00423delete
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摘要

摘要

En 中文
We study controllable text summarization, which allows users to gain control on a particular attribute (e.g., length limit) of the generated summaries. In this work, we propose a novel training framework based on Constrained Markov Decision Process (CMDP), which conveniently includes a reward function along with a set of constraints, to facilitate better summarization control. The reward function encourages the generation to resemble the human-written reference, while the constraints are used to explicitly prevent the generated summaries from violating user-imposed requirements. Our framework can be applied to control important attributes of summarization, including length, covered entities, and abstractiveness, as we devise specific constraints for each of these aspects. Extensive experiments on popular benchmarks show that ourCMDPframework helps generate informative summaries while complying with a given attribute's requirement.(1)
Keyword:
GENERATION

期刊

T
Transactions of the Association for Computational Linguistics
IF:
6.9
论文数:
486
被引数:
5.7K

机构

U
University of Michigan
学者数:
6.4W
论文数: 5.3W
被引数: 124
U
University of Macau
学者数:
1.1W
论文数: 1.3W
被引数: 2.0W
U
university of michigan system
学者数:
9.1W
论文数: 8.6W
被引数: 133
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