Automatic Extraction of Lexico-Syntactic Patterns for Detection of Negation and Speculation Scopes Emilia Apostolova author Noriko Tomuro author Dina Demner-Fushman author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication apostolova-etal-2011-automatic https://aclanthology.org/P11-2049/ 2011-06 283 287