A Japanese predicate argument structure analysis using decision lists

  • Authors:
  • Hirotoshi Taira;Sanae Fujita;Masaaki Nagata

  • Affiliations:
  • NTT Communication Science Laboratories, Keihanna Science City, Kyoto, Japan;NTT Communication Science Laboratories, Keihanna Science City, Kyoto, Japan;NTT Communication Science Laboratories, Keihanna Science City, Kyoto, Japan

  • Venue:
  • EMNLP '08 Proceedings of the Conference on Empirical Methods in Natural Language Processing
  • Year:
  • 2008

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Abstract

This paper describes a new automatic method for Japanese predicate argument structure analysis. The method learns relevant features to assign case roles to the argument of the target predicate using the features of the words located closest to the target predicate under various constraints such as dependency types, words, semantic categories, parts of speech, functional words and predicate voices. We constructed decision lists in which these features were sorted by their learned weights. Using our method, we integrated the tasks of semantic role labeling and zero-pronoun identification, and achieved a 17% improvement compared with a baseline method in a sentence level performance analysis.