Event Coreference Resolution by Iteratively Unfolding Inter-dependencies among Events

Prafulla Kumar Choubey, Ruihong Huang
2017 Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing  
We introduce a novel iterative approach for event coreference resolution that gradually builds event clusters by exploiting inter-dependencies among event mentions within the same chain as well as across event chains. Among event mentions in the same chain, we distinguish within-and cross-document event coreference links by using two distinct pairwise classifiers, trained separately to capture differences in feature distributions of within-and crossdocument event clusters. Our event coreference
more » ... approach alternates between WD and CD clustering and combines arguments from both event clusters after every merge, continuing till no more merge can be made. And then it performs further merging between event chains that are both closely related to a set of other chains of events. Experiments on the ECB+ corpus show that our model outperforms state-of-the-art methods in joint task of WD and CD event coreference resolution.
doi:10.18653/v1/d17-1226 dblp:conf/emnlp/ChoubeyH17a fatcat:vf35lweuuncujevt5horgxbi54