Dependency-directed Tree Kernel-based Protein-Protein Interaction Extraction from Biomedical Literature Longhua Qian author Guodong Zhou author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication qian-zhou-2011-dependency https://aclanthology.org/I11-1002/ 2011-11 10 19