Single Character Chinese Named Entity Recognition Xiaodan Zhu author Mu Li author Jianfeng Gao author Chang-Ning Huang author 2003-07 text Proceedings of the Second SIGHAN Workshop on Chinese Language Processing Association for Computational Linguistics Sapporo, Japan conference publication zhu-etal-2003-single 10.3115/1119250.1119268 https://aclanthology.org/W03-1718/ 2003-07 125 132