Statistical machine translation based on hierarchical phrase alignment Taro Watanabe author Kenji Imamura author Eiichiro Sumita author 2002-mar 13-17 text Proceedings of the 9th Conference on Theoretical and Methodological Issues in Machine Translation of Natural Languages: Papers Keihanna, Japan conference publication watanabe-etal-2002-statistical-machine https://aclanthology.org/2002.tmi-papers.20/ 2002-mar 13-17