Supervised ranking for pronoun resolution: some recent improvements

  • Authors:
  • Vincent Ng

  • Affiliations:
  • Human Language Technology Research Institute, University of Texas at Dallas, Richardson, TX

  • Venue:
  • AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 3
  • Year:
  • 2005

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Abstract

A recently-proposed machine learning approach to reference resolution -- the twin-candidate approach -- has been shown to be more pormising than the traditional single-candidate approach. This paper presents a pronoun interpretation system that extends the twin-candidate framework by (1) equippmg it with the ability to identify non-referential pronouns. (2) training different models for handling different types of pronouns, and (3) incorporating linguistic knowledge sources that are generally not employed in traditional pronoun resolvers. The resulting system, when evaluated on a standard coreference corpus, outpreforms not only the original twin-candidate approach but also a state-of-the-art pronoun resolver.