Paper: Easy Victories and Uphill Battles in Coreference Resolution

ACL ID D13-1203
Title Easy Victories and Uphill Battles in Coreference Resolution
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2013
Authors

Classical coreference systems encode various syntactic, discourse, and semantic phenomena explicitly, using heterogenous features com- puted from hand-crafted heuristics. In con- trast, we present a state-of-the-art coreference system that captures such phenomena implic- itly, with a small number of homogeneous feature templates examining shallow proper- ties of mentions. Surprisingly, our features are actually more effective than the corre- sponding hand-engineered ones at modeling these key linguistic phenomena, allowing us to win ?easy victories? without crafted heuris- tics. These features are successful on syntax and discourse; however, they do not model semantic compatibility well, nor do we see gains from experiments with shallow seman- tic features from the literature, suggesting t...