GTI: An Unsupervised Approach for Sentiment Analysis in Twitter

Milagros Fern{\'a}ndez-Gavilanes, Tamara {\'A}lvarez-L{\'o}pez, Jonathan Juncal-Mart{\'\i}nez, Enrique Costa-Montenegro, Francisco Javier Gonz{\'a}lez-Casta{\~n}o