Bidirectional Phrase-based Statistical Machine Translation Andrew Finch author Eiichiro Sumita author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication finch-sumita-2009-bidirectional https://aclanthology.org/D09-1117/ 2009-08 1124 1132