Paper: Bidirectional Decoding For Statistical Machine Translation

ACL ID C02-1050
Title Bidirectional Decoding For Statistical Machine Translation
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2002
Authors
  • Taro Watanabe (ATR Spoken Language Translation Research Laboratories, Kyoto Japan; Kyoto University, Kyoto Japan)
  • Eiichiro Sumita (ATR Spoken Language Translation Research Laboratories, Kyoto Japan)

This paper describes the right-to-left decoding method, which translates an input string by gen- erating in right-to-left direction. In addition, pre- sented is the bidirectional decoding method, that can take both of the advantages of left-to-right and right-to-left decoding method by generating output in both ways and by merging hypothesized partial outputs of two directions. The experimental results on Japanese and English translation showed that the right-to-left was better for Englith-to-Japanese translation, while the left-to-right was suitable for Japanese-to-English translation. It was also ob- served that the bidirectional method was better for English-to-Japanese translation.