Biomedical Event Annotation with CRFs and Precision Grammars Andrew MacKinlay author David Martinez author Timothy Baldwin author 2009-06 text Proceedings of the BioNLP 2009 Workshop Companion Volume for Shared Task Jun’ichi Tsujii editor Association for Computational Linguistics Boulder, Colorado conference publication mackinlay-etal-2009-biomedical https://aclanthology.org/W09-1410/ 2009-06 77 85