Event Coreference Resolution: A Survey of Two Decades of Research

  title={Event Coreference Resolution: A Survey of Two Decades of Research},
  author={Jing Lu and Vincent Ng},
Recent years have seen a gradual shift of focus from entity-based tasks to event-based tasks in information extraction research. Being a core event-based task, event coreference resolution is less studied but arguably more challenging than entity coreference resolution. This paper provides an overview of the major milestones made in event coreference research since its inception two decades ago. 

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