Filling in the gaps : efficient event coreference resolution using graph autoencoder networks

Publication type
C1
Publication status
Published
Authors
De Langhe, L., De Clercq, O., & Hoste, V.
Editor
Maciej Ogrodniczuk, Vincent Ng, Sameer Pradhan and Massimo Poesio
Series
Proceedings of the Sixth Workshop on Computational Models of Reference, Anaphora and Coreference (CRAC 2023)
Pagination
1-7
Publisher
Association for Computational Linguistics (ACL)
Conference
6th Workshop on Computational Models of Reference, Anaphora and Coreference (CRAC2023), held at the 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023) (Singapore)
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Abstract

We introduce a novel and efficient method for Event Coreference Resolution (ECR) applied to a lower-resourced language domain. By framing ECR as a graph reconstruction task, we are able to combine deep semantic embeddings with structural coreference chain knowledge to create a parameter-efficient family of Graph Autoencoder models (GAE). Our method significantly outperforms classical mention-pair methods on a large Dutch event coreference corpus in terms of overall score, efficiency and training speed. Additionally, we show that our models are consistently able to classify more difficult coreference links and are far more robust in low-data settings when compared to transformer-based mention-pair coreference algorithms.