Detecting and Blocking False Sentiment Propagation Hye-Jin Min author Jong C Park author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication min-park-2011-detecting https://aclanthology.org/I11-1040/ 2011-11 354 362