Stay Together: A System for Single and Split-antecedent Anaphora Resolution

Juntao Yu, Nafise Sadat Moosavi, Silviu Paun, Massimo Poesio


Abstract
The state-of-the-art on basic, single-antecedent anaphora has greatly improved in recent years. Researchers have therefore started to pay more attention to more complex cases of anaphora such as split-antecedent anaphora, as in “Time-Warner is considering a legal challenge to Telecommunications Inc’s plan to buy half of Showtime Networks Inc–a move that could lead to all-out war between the two powerful companies”. Split-antecedent anaphora is rarer and more complex to resolve than single-antecedent anaphora; as a result, it is not annotated in many datasets designed to test coreference, and previous work on resolving this type of anaphora was carried out in unrealistic conditions that assume gold mentions and/or gold split-antecedent anaphors are available. These systems also focus on split-antecedent anaphors only. In this work, we introduce a system that resolves both single and split-antecedent anaphors, and evaluate it in a more realistic setting that uses predicted mentions. We also start addressing the question of how to evaluate single and split-antecedent anaphors together using standard coreference evaluation metrics.
Anthology ID:
2021.naacl-main.329
Volume:
Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies
Month:
June
Year:
2021
Address:
Online
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4174–4184
Language:
URL:
https://aclanthology.org/2021.naacl-main.329
DOI:
10.18653/v1/2021.naacl-main.329
Bibkey:
Cite (ACL):
Juntao Yu, Nafise Sadat Moosavi, Silviu Paun, and Massimo Poesio. 2021. Stay Together: A System for Single and Split-antecedent Anaphora Resolution. In Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, pages 4174–4184, Online. Association for Computational Linguistics.
Cite (Informal):
Stay Together: A System for Single and Split-antecedent Anaphora Resolution (Yu et al., NAACL 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.naacl-main.329.pdf
Video:
 https://aclanthology.org/2021.naacl-main.329.mp4
Code
 juntaoy/dali-full-anaphora