Sentiment Analysis in Twitter with Lightweight Discourse Analysis Subhabrata Mukherjee author Pushpak Bhattacharyya author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication mukherjee-bhattacharyya-2012-sentiment https://aclanthology.org/C12-1113/ 2012-12 1847 1864