Exploiting Knowledge about Discourse Relations for Implicit Discourse Relation Classification

Nobel Varghese, Frances Yung, Kaveri Anuranjana, Vera Demberg


Abstract
In discourse relation recognition, the classification labels are typically represented as one-hot vectors. However, the categories are in fact not all independent of one another on the contrary, there are several frameworks that describe the labels’ similarities (by e.g. sorting them into a hierarchy or describing them interms of features (Sanders et al., 2021)). Recently, several methods for representing the similarities between labels have been proposed (Zhang et al., 2018; Wang et al., 2018; Xiong et al., 2021). We here explore and extend the Label Confusion Model (Guo et al., 2021) for learning a representation for discourse relation labels. We explore alternative ways of informing the model about the similarities between relations, by representing relations in terms of their names (and parent category), their typical markers, or in terms of CCR features that describe the relations. Experimental results show that exploiting label similarity improves classification results.
Anthology ID:
2023.codi-1.13
Volume:
Proceedings of the 4th Workshop on Computational Approaches to Discourse (CODI 2023)
Month:
July
Year:
2023
Address:
Toronto, Canada
Editors:
Michael Strube, Chloe Braud, Christian Hardmeier, Junyi Jessy Li, Sharid Loaiciga, Amir Zeldes
Venue:
CODI
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
99–105
Language:
URL:
https://aclanthology.org/2023.codi-1.13
DOI:
10.18653/v1/2023.codi-1.13
Bibkey:
Cite (ACL):
Nobel Varghese, Frances Yung, Kaveri Anuranjana, and Vera Demberg. 2023. Exploiting Knowledge about Discourse Relations for Implicit Discourse Relation Classification. In Proceedings of the 4th Workshop on Computational Approaches to Discourse (CODI 2023), pages 99–105, Toronto, Canada. Association for Computational Linguistics.
Cite (Informal):
Exploiting Knowledge about Discourse Relations for Implicit Discourse Relation Classification (Varghese et al., CODI 2023)
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PDF:
https://aclanthology.org/2023.codi-1.13.pdf