Enhanced Twitter Sentiment Classification Using Contextual Information Soroush Vosoughi author Helen Zhou author Deb Roy author 2015-09 text Proceedings of the 6th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis Alexandra Balahur editor Erik van der Goot editor Piek Vossen editor Andres Montoyo editor Association for Computational Linguistics Lisboa, Portugal conference publication vosoughi-etal-2015-enhanced 10.18653/v1/W15-2904 https://aclanthology.org/W15-2904/ 2015-09 16 24