Selective Combination of Pivot and Direct Statistical Machine Translation Models Ahmed El Kholy author Nizar Habash author Gregor Leusch author Evgeny Matusov author Hassan Sawaf author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication el-kholy-etal-2013-selective https://aclanthology.org/I13-1167/ 2013-10 1174 1180