Paper: Coreference or Not: A Twin Model for Coreference Resolution

ACL ID N07-1010
Title Coreference or Not: A Twin Model for Coreference Resolution
Venue Human Language Technologies
Session Main Conference
Year 2007
Authors
  • Xiaoqiang Luo (IBM T.J. Watson Research Center, Yorktown Heights NY)

A twin-model is proposed for coreference res- olution: a link component, modeling the coref- erential relationship between an anaphor and a candidate antecedent, and a creation com- ponent modeling the possibility that a phrase is not coreferential with any candidate an- tecedent. The creation model depends on all candidate antecedents and is often expensive to compute; Therefore constraints are imposed on feature forms so that features in the cre- ation model can be efficiently computed from feature values in the link model. The pro- posed twin-model is tested on the data from the 2005 Automatic Content Extraction (ACE) task and the proposed model performs bet- ter than a thresholding baseline without tuning free parameter.