FBK@IWSLT 2007 Nicola Bertoldi author Mauro Cettolo author Roldano Cattoni author Marcello Federico author 2007-oct 15-16 text Proceedings of the Fourth International Workshop on Spoken Language Translation Trento, Italy conference publication bertoldi-etal-2007-fbk https://aclanthology.org/2007.iwslt-1.11/ 2007-oct 15-16