The MIT-LL/AFRL IWSLT-2007 MT system Wade Shen author Brian Delaney author Tim Anderson author Ray Slyh author 2007-oct 15-16 text Proceedings of the Fourth International Workshop on Spoken Language Translation Trento, Italy conference publication shen-etal-2007-mit https://aclanthology.org/2007.iwslt-1.14/ 2007-oct 15-16