... of the Association for Computational Linguistics, pages 142–150,Portland, Oregon, June 19-24, 2011.c2011 Association for Computational LinguisticsLearning Word Vectors for Sentiment AnalysisAndrew ... Pham, Dan Huang,Andrew Y. Ng, and Christopher PottsStanford UniversityStanford, CA 94305[amaas, rdaly, ptpham, yuze, ang, cgpotts]@stanford.eduAbstractUnsupervised vector-based approaches ... find it out-performs several previ-ously introduced methods for sentiment clas-sification. We also introduce a large datasetof movie reviews to serve as a more robustbenchmark for work in this...