A fully-lexicalized probabilistic model for Japanese zero anaphora resolution

  • Authors:
  • Ryohei Sasano;Daisuke Kawahara;Sadao Kurohashi

  • Affiliations:
  • University of Tokyo;National Institute of Information and Communication Technology;Kyoto University

  • Venue:
  • COLING '08 Proceedings of the 22nd International Conference on Computational Linguistics - Volume 1
  • Year:
  • 2008

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Abstract

This paper presents a probabilistic model for Japanese zero anaphora resolution. First, this model recognizes discourse entities and links all mentions to them. Zero pronouns are then detected by case structure analysis based on automatically constructed case frames. Their appropriate antecedents are selected from the entities with high salience scores, based on the case frames and several preferences on the relation between a zero pronoun and an antecedent. Case structure and zero anaphora relation are simultaneously determined based on probabilistic evaluation metrics.