- E. Hovy, T. Mitamura, M. Verdejo, J. Araki, A. Philpot. 2013. Events are Not Simple: Identity, Non-Identity, and Quasi-Identity. Abstract: Despite considerable theoretical and computational work on coreference, deciding when two entities or events are identical is very difficult. In a project to build corpora containing coreference links between events, we have identified three levels of event identity (full, partial, and none). Event coreference annotation on two corpora was performed to validate the findings.
