Narrative schema as world knowledge for coreference resolution

Authors:
Joseph Irwin;Mamoru Komachi;Yuji Matsumoto
Affiliations:
Nara Institute of Science and Technology, Nara Prefecture, Japan;Nara Institute of Science and Technology, Nara Prefecture, Japan;Nara Institute of Science and Technology, Nara Prefecture, Japan
Venue:
CONLL Shared Task '11 Proceedings of the Fifteenth Conference on Computational Natural Language Learning: Shared Task
Year:
2011

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Abstract

In this paper we describe the system with which we participated in the CoNLL-2011 Shared Task on modelling coreference. Our system is based on a cluster-ranking model proposed by Rahman and Ng (2009), with novel semantic features based on recent research on narrative event schema (Chambers and Jurafsky, 2009). We demonstrate some improvements over the baseline when using schema information, although the effect varied between the metrics used. We also explore the impact of various features on our system's performance.