Dependency Tree-based Sentiment Classification using CRFs with Hidden Variables Tetsuji Nakagawa author Kentaro Inui author Sadao Kurohashi author 2010-06 text Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics Ron Kaplan editor Jill Burstein editor Mary Harper editor Gerald Penn editor Association for Computational Linguistics Los Angeles, California conference publication nakagawa-etal-2010-dependency https://aclanthology.org/N10-1120/ 2010-06 786 794