Improved Translation with Source Syntax Labels Hieu Hoang author Philipp Koehn author 2010-07 text Proceedings of the Joint Fifth Workshop on Statistical Machine Translation and MetricsMATR Chris Callison-Burch editor Philipp Koehn editor Christof Monz editor Kay Peterson editor Omar Zaidan editor Association for Computational Linguistics Uppsala, Sweden conference publication hoang-koehn-2010-improved https://aclanthology.org/W10-1761/ 2010-07 409 417