Assignment of Ontology-based Broad Semantic Classes to Biomedical Text Kevin Bretonnel Cohen author 2011-09 text Proceedings of the Second Workshop on Biomedical Natural Language Processing Guergana Savova editor Kevin Bretonnel Cohen editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication cohen-2011-assignment https://aclanthology.org/W11-4201/ 2011-09 1 2