Breaking the Subtopic Barrier in Cross-Document Event Coreference Resolution
Michael Bugert, Nils Reimers, Shany Barhom, Ido Dagan, Iryna Gurevych · TUbilio (Technical University of Darmstadt) · 2020
Cross-document event coreference resolution (CDCR) is the task of detecting and clustering mentions of events across a set of documents.A major bottleneck in CDCR is a lack of appropriate datasets, which stems from the difficulty of annotating data for this task.We present the first scalable approach for annotating cross-subtopic event coreference links, a highly valuable but rarely occurring type of cross-document link.The annotation of these links requires combing through hundreds of documents -an endeavor for which conventional token-level annotation schemes with trained expert annotators are too expensive.We instead propose crowdsourcing annotation on sentence level to achieve scalability.We apply our approach to create the Football Coreference Corpus (FCC), a corpus of 451 sports news reports, while reaching high agreement between NLP experts and crowd annotators in the process. 1