Sentiment Analysis in Czech Social Media Using Supervised Machine Learning Ivan Habernal author Tomáš Ptáček author Josef Steinberger author 2013-06 text Proceedings of the 4th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis Alexandra Balahur editor Erik van der Goot editor Andres Montoyo editor Association for Computational Linguistics Atlanta, Georgia conference publication habernal-etal-2013-sentiment https://aclanthology.org/W13-1609/ 2013-06 65 74