Improved Word Alignment Using a Symmetric Lexicon Model Richard Zens author Evgeny Matusov 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 zens-etal-2004-improved https://aclanthology.org/C04-1006/ 2004-aug 23–aug 27 36 42