A Two-stage Statistical Word Segmentation System for Chinese Guohong Fu author Kang-Kwong Luke author 2003-07 text Proceedings of the Second SIGHAN Workshop on Chinese Language Processing Association for Computational Linguistics Sapporo, Japan conference publication fu-luke-2003-two 10.3115/1119250.1119273 https://aclanthology.org/W03-1723/ 2003-07 156 159