NiuTrans: An Open Source Toolkit for Phrase-based and Syntax-based Machine Translation Tong Xiao author Jingbo Zhu author Hao Zhang author Qiang Li author 2012-07 text Proceedings of the ACL 2012 System Demonstrations Min Zhang editor Association for Computational Linguistics Jeju Island, Korea conference publication xiao-etal-2012-niutrans https://aclanthology.org/P12-3004/ 2012-07 19 24