A Regularization Approach for Incorporating Event Knowledge and Coreference Relations into Neural Discourse Parsing

Zeyu Dai, Ruihong Huang


Abstract
We argue that external commonsense knowledge and linguistic constraints need to be incorporated into neural network models for mitigating data sparsity issues and further improving the performance of discourse parsing. Realizing that external knowledge and linguistic constraints may not always apply in understanding a particular context, we propose a regularization approach that tightly integrates these constraints with contexts for deriving word representations. Meanwhile, it balances attentions over contexts and constraints through adding a regularization term into the objective function. Experiments show that our knowledge regularization approach outperforms all previous systems on the benchmark dataset PDTB for discourse parsing.
Anthology ID:
D19-1295
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
Editors:
Kentaro Inui, Jing Jiang, Vincent Ng, Xiaojun Wan
Venues:
EMNLP | IJCNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
2976–2987
Language:
URL:
https://aclanthology.org/D19-1295
DOI:
10.18653/v1/D19-1295
Bibkey:
Cite (ACL):
Zeyu Dai and Ruihong Huang. 2019. A Regularization Approach for Incorporating Event Knowledge and Coreference Relations into Neural Discourse Parsing. 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 2976–2987, Hong Kong, China. Association for Computational Linguistics.
Cite (Informal):
A Regularization Approach for Incorporating Event Knowledge and Coreference Relations into Neural Discourse Parsing (Dai & Huang, EMNLP-IJCNLP 2019)
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PDF:
https://aclanthology.org/D19-1295.pdf