Extending Event Detection to New Types with Learning from Keywords Viet Dac Lai author Thien Huu Nguyen author 2019-11 text Proceedings of the 5th Workshop on Noisy User-generated Text (W-NUT 2019) Wei Xu editor Alan Ritter editor Tim Baldwin editor Afshin Rahimi editor Association for Computational Linguistics Hong Kong, China conference publication lai-nguyen-2019-extending 10.18653/v1/D19-5532 https://aclanthology.org/D19-5532/ 2019-11 243 248