@InProceedings{cruz-EtAl:2011:WASSA2011, author = {Cruz, Ferm\'{i}n L. and Troyano, Jos\'{e} A. and Ortega, F. Javier and Enr\'{i}quez, Fernando}, title = {Automatic Expansion of Feature-Level Opinion Lexicons}, booktitle = {Proceedings of the 2nd Workshop on Computational Approaches to Subjectivity and Sentiment Analysis (WASSA 2.011)}, month = {June}, year = {2011}, address = {Portland, Oregon}, publisher = {Association for Computational Linguistics}, pages = {125--131}, url = {http://www.aclweb.org/anthology/W11-1716} }