Sentiments and Opinions in Health-related Web messages Marina Sokolova author Victoria Bobicev author 2011-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing 2011 Ruslan Mitkov editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication sokolova-bobicev-2011-sentiments https://aclanthology.org/R11-1019/ 2011-09 132 139