Sentiment Classification Considering Negation and Contrast Transition Shoushan Li author Chu-Ren Huang author 2009-12 text Proceedings of the 23rd Pacific Asia Conference on Language, Information and Computation, Volume 1 Olivia Kwong editor City University of Hong Kong Hong Kong conference publication li-huang-2009-sentiment https://aclanthology.org/Y09-1033/ 2009-12 307 316