Improving Event Detection with Dependency Regularization Kai Cao author Xiang Li author Ralph Grishman author 2015-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing Ruslan Mitkov editor Galia Angelova editor Kalina Bontcheva editor INCOMA Ltd. Shoumen, BULGARIA Hissar, Bulgaria conference publication cao-etal-2015-improving-event https://aclanthology.org/R15-1011/ 2015-09 78 83