Word alignment with synonym regularization

  • Authors:
  • Hiroyuki Shindo;Akinori Fujino;Masaaki Nagata

  • Affiliations:
  • NTT Corp., Soraku-gun, Kyoto, Japan;NTT Corp., Soraku-gun, Kyoto, Japan;NTT Corp., Soraku-gun, Kyoto, Japan

  • Venue:
  • ACLShort '10 Proceedings of the ACL 2010 Conference Short Papers
  • Year:
  • 2010

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Abstract

We present a novel framework for word alignment that incorporates synonym knowledge collected from monolingual linguistic resources in a bilingual probabilistic model. Synonym information is helpful for word alignment because we can expect a synonym to correspond to the same word in a different language. We design a generative model for word alignment that uses synonym information as a regularization term. The experimental results show that our proposed method significantly improves word alignment quality.