Tree Kernel-Based Relation Extraction with Context-Sensitive Structured Parse Tree Information GuoDong Zhou author Min Zhang author Dong Hong Ji author QiaoMing Zhu author 2007-06 text Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL) Jason Eisner editor Association for Computational Linguistics Prague, Czech Republic conference publication zhou-etal-2007-tree https://aclanthology.org/D07-1076/ 2007-06 728 736