Factored Soft Source Syntactic Constraints for Hierarchical Machine Translation Zhongqiang Huang author Jacob Devlin author Rabih Zbib author 2013-10 text Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing David Yarowsky editor Timothy Baldwin editor Anna Korhonen editor Karen Livescu editor Steven Bethard editor Association for Computational Linguistics Seattle, Washington, USA conference publication huang-etal-2013-factored https://aclanthology.org/D13-1053/ 2013-10 556 566