Xiang Li author Thien Huu Nguyen author Kai Cao author Ralph Grishman author 2015-07 text Tommaso Caselli editor Marieke van Erp editor Anne-Lyse Minard editor Mark Finlayson editor Ben Miller editor Jordi Atserias editor Alexandra Balahur editor Piek Vossen editor Association for Computational Linguistics Beijing, China conference publication li-etal-2015-improving-event 10.18653/v1/W15-4502 https://aclanthology.org/W15-4502/ 2015-07 11 15