Event Extraction in pieces:Tackling the partial event identification problem on unseen corpora Chrysoula Zerva author Sophia Ananiadou author 2015-07 text Proceedings of BioNLP 15 Kevin Bretonnel Cohen editor Dina Demner-Fushman editor Sophia Ananiadou editor Jun-ichi Tsujii editor Association for Computational Linguistics Beijing, China conference publication zerva-ananiadou-2015-event 10.18653/v1/W15-3804 https://aclanthology.org/W15-3804/ 2015-07 31 41