AUEB: Two Stage Sentiment Analysis of Social Network Messages Rafael Michael Karampatsis author John Pavlopoulos author Prodromos Malakasiotis author 2014-08 text Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014) Preslav Nakov editor Torsten Zesch editor Association for Computational Linguistics Dublin, Ireland conference publication karampatsis-etal-2014-aueb 10.3115/v1/S14-2015 https://aclanthology.org/S14-2015/ 2014-08 114 118