Empirical lower bounds on translation unit error rate for the full class of inversion transduction grammars Anders Søgaard author Dekai Wu author 2009-10 text Proceedings of the 11th International Conference on Parsing Technologies (IWPT’09) Harry Bunt editor Éric Villemonte de la Clergerie editor Association for Computational Linguistics Paris, France conference publication sogaard-wu-2009-empirical https://aclanthology.org/W09-3805/ 2009-10 33 36