Symmetric Word Alignments for Statistical Machine Translation Evgeny Matusov author Richard Zens author Hermann Ney author 2004-aug 23–aug 27 text COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics COLING Geneva, Switzerland conference publication matusov-etal-2004-symmetric https://aclanthology.org/C04-1032/ 2004-aug 23–aug 27 219 225