MISTRAL: a lattice translation system for IWSLT 2007 Alexandre Patry author Philippe Langlais author Frédéric Béchet author 2007-oct 15-16 text Proceedings of the Fourth International Workshop on Spoken Language Translation Trento, Italy conference publication patry-etal-2007-mistral https://aclanthology.org/2007.iwslt-1.22/ 2007-oct 15-16