Minimally Supervised Learning of Affective Events Using Discourse Relations

Jun Saito, Yugo Murawaki, Sadao Kurohashi


Abstract
Recognizing affective events that trigger positive or negative sentiment has a wide range of natural language processing applications but remains a challenging problem mainly because the polarity of an event is not necessarily predictable from its constituent words. In this paper, we propose to propagate affective polarity using discourse relations. Our method is simple and only requires a very small seed lexicon and a large raw corpus. Our experiments using Japanese data show that our method learns affective events effectively without manually labeled data. It also improves supervised learning results when labeled data are small.
Anthology ID:
D19-1581
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:
5758–5765
Language:
URL:
https://aclanthology.org/D19-1581
DOI:
10.18653/v1/D19-1581
Bibkey:
Cite (ACL):
Jun Saito, Yugo Murawaki, and Sadao Kurohashi. 2019. Minimally Supervised Learning of Affective Events Using Discourse Relations. 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 5758–5765, Hong Kong, China. Association for Computational Linguistics.
Cite (Informal):
Minimally Supervised Learning of Affective Events Using Discourse Relations (Saito et al., EMNLP-IJCNLP 2019)
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PDF:
https://aclanthology.org/D19-1581.pdf