Sentiment Analysis in Spanish Tweets: Some Experiments with Focus on Neutral Tweets

Abstract

We present different methods for Sentiment analysis in Spanish tweets: SVM based on word embeddings centroid for the tweet, CNN and LSTM.We analyze the results obtained using the corpora from the TASS sentiment analysis challenge, obtaining state of the art results in the performance of the classifiers. As the neutral category is the hardest one to classify, we focus in understanding the neutral tweets classification problems and we further analyze the composition of this class in order to extract insights on how to improve the classifiers.