Paper: Joint Inference for Event Timeline Construction

ACL ID D12-1062
Title Joint Inference for Event Timeline Construction
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2012
Authors

This paper addresses the task of construct- ing a timeline of events mentioned in a given text. To accomplish that, we present a novel representation of the temporal structure of a news article based on time intervals. We then present an algorithmic approach that jointly optimizes the temporal structure by coupling local classifiers that predict associations and temporal relations between pairs of tempo- ral entities with global constraints. Moreover, we present ways to leverage knowledge pro- vided by event coreference to further improve the system performance. Overall, our experi- ments show that the joint inference model sig- nificantly outperformed the local classifiers by 9.2% of relative improvement in F1. The ex- periments also suggest that good event coref- erence could make remark...