Statistical Machine Translation for Query Expansion in Answer Retrieval Stefan Riezler author Alexander Vasserman author Ioannis Tsochantaridis author Vibhu Mittal author Yi Liu 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 riezler-etal-2007-statistical https://aclanthology.org/P07-1059/ 2007-06 464 471