Modeling User Leniency and Product Popularity for Sentiment Classification Wenliang Gao author Naoki Yoshinaga author Nobuhiro Kaji author Masaru Kitsuregawa author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication gao-etal-2013-modeling https://aclanthology.org/I13-1156/ 2013-10 1107 1111