Topic-Guided Coherence Modeling for Sentence Ordering by Preserving Global and Local Information

Byungkook Oh, Seungmin Seo, Cheolheon Shin, Eunju Jo, Kyong-Ho Lee


Abstract
We propose a novel topic-guided coherence modeling (TGCM) for sentence ordering. Our attention based pointer decoder directly utilize sentence vectors in a permutation-invariant manner, without being compressed into a single fixed-length vector as the paragraph representation. Thus, TGCM can improve global dependencies among sentences and preserve relatively informative paragraph-level semantics. Moreover, to predict the next sentence, we capture topic-enhanced sentence-pair interactions between the current predicted sentence and each next-sentence candidate. With the coherent topical context matching, we promote local dependencies that help identify the tight semantic connections for sentence ordering. The experimental results show that TGCM outperforms state-of-the-art models from various perspectives.
Anthology ID:
D19-1232
Volume:
Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)
Month:
November
Year:
2019
Address:
Hong Kong, China
Venues:
EMNLP | IJCNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
2273–2283
Language:
URL:
https://aclanthology.org/D19-1232
DOI:
10.18653/v1/D19-1232
Bibkey:
Cite (ACL):
Byungkook Oh, Seungmin Seo, Cheolheon Shin, Eunju Jo, and Kyong-Ho Lee. 2019. Topic-Guided Coherence Modeling for Sentence Ordering by Preserving Global and Local Information. In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), pages 2273–2283, Hong Kong, China. Association for Computational Linguistics.
Cite (Informal):
Topic-Guided Coherence Modeling for Sentence Ordering by Preserving Global and Local Information (Oh et al., EMNLP-IJCNLP 2019)
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PDF:
https://preview.aclanthology.org/auto-file-uploads/D19-1232.pdf