Papers › Contextualized Rewriting for Text Summarization

Contextualized Rewriting for Text Summarization

31 Jan 2021arXiv:2102.00385archive 2025-07-28

Guangsheng Bao, Yue Zhang

Extractive summarization suffers from irrelevance, redundancy and incoherence. Existing work shows that abstractive rewriting for extractive summaries can improve the conciseness and readability. These rewriting systems consider extracted summaries as the only input, which is relatively focused but can lose important background knowledge. In this paper, we investigate contextualized rewriting, which ingests the entire original document. We formalize contextualized rewriting as a seq2seq problem with group alignments, introducing group tag as a solution to model the alignments, identifying extracted summaries through content-based addressing. Results show that our approach significantly outperforms non-contextualized rewriting systems without requiring reinforcement learning, achieving strong improvements on ROUGE scores upon multiple extractive summarizers.

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Code

baoguangsheng/ctx-rewriter-for-summ officialmentioned in papermentioned on GitHubpytorch report
baoguangsheng/g-transformer mentioned on GitHubpytorchMIT report

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Extractive SummarizationReinforcement Learning (RL)TAGText Summarizationreinforcement-learning

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Methods

LSTMSeq2SeqSigmoid ActivationTanh Activation

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