United we Stand: Improving Sentiment Analysis by Joining Machine Learning and Rule Based Methods Vassiliki Rentoumi author Stefanos Petrakis author Manfred Klenner author George A Vouros author Vangelis Karkaletsis author 2010-05 text Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC’10) Nicoletta Calzolari editor Khalid Choukri editor Bente Maegaard editor Joseph Mariani editor Jan Odijk editor Stelios Piperidis editor Mike Rosner editor Daniel Tapias editor European Language Resources Association (ELRA) Valletta, Malta conference publication rentoumi-etal-2010-united https://aclanthology.org/L10-1020/ 2010-05