Improved Word-Level System Combination for Machine Translation Antti-Veikko Rosti author Spyros Matsoukas author Richard Schwartz author 2007-06 text Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics Annie Zaenen editor Antal van den Bosch editor Association for Computational Linguistics Prague, Czech Republic conference publication rosti-etal-2007-improved https://aclanthology.org/P07-1040/ 2007-06 312 319