SESS: A Self-Supervised and Syntax-Based Method for Sentiment Classification Weishi Zhang author Kai Zhao author Likun Qiu author Changjian Hu author 2009-12 text Proceedings of the 23rd Pacific Asia Conference on Language, Information and Computation, Volume 2 Olivia Kwong editor City University of Hong Kong Hong Kong conference publication zhang-etal-2009-sess https://aclanthology.org/Y09-2018/ 2009-12 596 605