Event Coreference Resolution with their Paraphrases and Argument-aware Embeddings

Yutao Zeng, Xiaolong Jin, Saiping Guan, Jiafeng Guo, Xueqi Cheng


Abstract
Event coreference resolution aims to classify all event mentions that refer to the same real-world event into the same group, which is necessary to information aggregation and many downstream applications. To resolve event coreference, existing methods usually calculate the similarities between event mentions and between specific kinds of event arguments. However, they fail to accurately identify paraphrase relations between events and may suffer from error propagation while extracting event components (i.e., event mentions and their arguments). Therefore, we propose a new model based on Event-specific Paraphrases and Argument-aware Semantic Embeddings, thus called EPASE, for event coreference resolution. EPASE recognizes deep paraphrase relations in an event-specific context of sentences and can cover event paraphrases of more situations, bringing about a better generalization. Additionally, the embeddings of argument roles are encoded into event embedding without relying on a fixed number and type of arguments, which results in the better scalability of EPASE. Experiments on both within- and cross-document event coreference demonstrate its consistent and significant superiority compared to existing methods.
Anthology ID:
2020.coling-main.275
Volume:
Proceedings of the 28th International Conference on Computational Linguistics
Month:
December
Year:
2020
Address:
Barcelona, Spain (Online)
Venue:
COLING
SIG:
Publisher:
International Committee on Computational Linguistics
Note:
Pages:
3084–3094
Language:
URL:
https://aclanthology.org/2020.coling-main.275
DOI:
10.18653/v1/2020.coling-main.275
Bibkey:
Cite (ACL):
Yutao Zeng, Xiaolong Jin, Saiping Guan, Jiafeng Guo, and Xueqi Cheng. 2020. Event Coreference Resolution with their Paraphrases and Argument-aware Embeddings. In Proceedings of the 28th International Conference on Computational Linguistics, pages 3084–3094, Barcelona, Spain (Online). International Committee on Computational Linguistics.
Cite (Informal):
Event Coreference Resolution with their Paraphrases and Argument-aware Embeddings (Zeng et al., COLING 2020)
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PDF:
https://aclanthology.org/2020.coling-main.275.pdf
Data
ECB+