LyS at TASS 2015: Deep Learning Experiments for Sentiment Analysis on Spanish Tweets.
David Vilares, Yerai Doval, Miguel Á. Alonso, Carlos Gómez‐Rodríguez · RUC (Universidade Da Coruña) · 2015
[Abstract]: This paper describes the participation of the LyS group at tass 2015. In this year’s edition, we used a long short-term memory neural network to address the two proposed challenges: (1) sentiment analysis at a global level and (2) aspect-based sentiment analysis on football and political tweets. The performance of this deep learning approach is compared to our last-year model, based on a square-regularized logistic regression. Experimental results show that strategies such as unsupervised pre-training, sentiment-specific word embedding or modifying the current architec- ture might be needed to achieve state-of-the-art results.