@InProceedings{apostolova-tomuro:2010:BioNLP, author = {Apostolova, Emilia and Tomuro, Noriko}, title = {Exploring Surface-Level Heuristics for Negation and Speculation Discovery in Clinical Texts}, booktitle = {Proceedings of the 2010 Workshop on Biomedical Natural Language Processing}, month = {July}, year = {2010}, address = {Uppsala, Sweden}, publisher = {Association for Computational Linguistics}, pages = {81--82}, url = {http://www.aclweb.org/anthology/W10-1910} }