Classifying Relations for Biomedical Named Entity Disambiguation Xinglong Wang author Jun’ichi Tsujii author Sophia Ananiadou author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication wang-etal-2009-classifying https://aclanthology.org/D09-1157/ 2009-08 1513 1522