Training MRF-Based Phrase Translation Models using Gradient Ascent Jianfeng Gao author Xiaodong He author 2013-06 text Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Lucy Vanderwende editor Hal Daumé III editor Katrin Kirchhoff editor Association for Computational Linguistics Atlanta, Georgia conference publication gao-he-2013-training https://aclanthology.org/N13-1048/ 2013-06 450 459