The First International Chinese Word Segmentation Bakeoff Richard Sproat author Thomas Emerson author 2003-07 text Proceedings of the Second SIGHAN Workshop on Chinese Language Processing Association for Computational Linguistics Sapporo, Japan conference publication sproat-emerson-2003-first 10.3115/1119250.1119269 https://aclanthology.org/W03-1719/ 2003-07 133 143