Learning Tractable Word Alignment Models with Complex Constraints João V Graça author Kuzman Ganchev author Ben Taskar author 2010-09 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal graca-etal-2010-learning 10.1162/coli_a_00007 https://aclanthology.org/J10-3007/ 2010-09 36 3 481 504