Minimum Bayes-Risk word alignments of bilingual texts

  • Authors:
  • Shankar Kumar;William Byrne

  • Affiliations:
  • Johns Hopkins University, Baltimore, MD;Johns Hopkins University, Baltimore, MD

  • Venue:
  • EMNLP '02 Proceedings of the ACL-02 conference on Empirical methods in natural language processing - Volume 10
  • Year:
  • 2002

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Abstract

We present Minimum Bayes-Risk word alignment for machine translation. This statistical, model-based approach attempts to minimize the expected risk of alignment errors under loss functions that measure alignment quality. We describe various loss functions, including some that incorporate linguistic analysis as can be obtained from parse trees, and show that these approaches can improve alignments of the English-French Hansards.