SSA-UO: Unsupervised Sentiment Analysis in Twitter Reynier Ortega Bueno author Adrian Fonseca Bruzón author Yoan Gutiérrez author Andrés Montoyo author 2013-06 text Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013) Suresh Manandhar editor Deniz Yuret editor Association for Computational Linguistics Atlanta, Georgia, USA conference publication ortega-bueno-etal-2013-ssa https://aclanthology.org/S13-2083/ 2013-06 501 507