Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015), pages 464–469, Denver, Colorado, June 4-5, 2015. c 2015 Association for Computational Linguistics UNITN: Training Deep Convolutional Neural Network for Twitter Sentiment Classification Aliaksei Severyn DISI, University of Trento 38123 Povo (TN), Italy severyn@disi.unitn.it Alessandro Moschitti Qatar Computing Rese