Syntactic methods for negation detection in radiology reports in Spanish Viviana Cotik author Vanesa Stricker author Jorge Vivaldi author Horacio Rodriguez author 2016-08 text Proceedings of the 15th Workshop on Biomedical Natural Language Processing Kevin Bretonnel Cohen editor Dina Demner-Fushman editor Sophia Ananiadou editor Jun-ichi Tsujii editor Association for Computational Linguistics Berlin, Germany conference publication cotik-etal-2016-syntactic 10.18653/v1/W16-2921 https://aclanthology.org/W16-2921/ 2016-08 156 165