Improved-Edit-Distance Kernel for Chinese Relation Extraction Wanxiang Che author Jianmin Jiang author Zhong Su author Yue Pan author Ting Liu author 2005 text Companion Volume to the Proceedings of Conference including Posters/Demos and tutorial abstracts conference publication che-etal-2005-improved https://aclanthology.org/I05-2023/ 2005