Efficient Beam Thresholding for Statistical Machine Translation Deyi Xiong author Min Zhang author Aiti Aw author Haizhou Li author 2009-aug 26-30 text Proceedings of Machine Translation Summit XII: Posters Ottawa, Canada conference publication xiong-etal-2009-efficient https://aclanthology.org/2009.mtsummit-posters.24/ 2009-aug 26-30