Head-modifier relation based non-lexical reordering model for phrase-based translation

  • Authors:
  • Shui Liu;Sheng Li;Tiejun Zhao;Min Zhang;Pengyuan Liu

  • Affiliations:
  • Habin Institute of Technology;Habin Institute of Technology;Habin Institute of Technology;Institute for Infocomm Research;Peking University

  • Venue:
  • COLING '10 Proceedings of the 23rd International Conference on Computational Linguistics: Posters
  • Year:
  • 2010

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Abstract

Phrase-based statistical MT (SMT) is a milestone in MT. However, the translation model in the phrase based SMT is structure free which greatly limits its reordering capacity. To address this issue, we propose a non-lexical head-modifier based reordering model on word level by utilizing constituent based parse tree in source side. Our experimental results on the NIST Chinese-English benchmarking data show that, with a very small size model, our method significantly outperforms the baseline by 1.48% bleu score.