GTI: An Unsupervised Approach for Sentiment Analysis in Twitter Milagros Fernández-Gavilanes author Tamara Álvarez-López author Jonathan Juncal-Martínez author Enrique Costa-Montenegro author Francisco Javier González-Castaño author 2015-06 text Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015) Preslav Nakov editor Torsten Zesch editor Daniel Cer editor David Jurgens editor Association for Computational Linguistics Denver, Colorado conference publication fernandez-gavilanes-etal-2015-gti 10.18653/v1/S15-2089 https://aclanthology.org/S15-2089/ 2015-06 533 538