Negative Deceptive Opinion Spam Myle Ott author Claire Cardie author Jeffrey T Hancock author 2013-06 text Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Lucy Vanderwende editor Hal Daumé III editor Katrin Kirchhoff editor Association for Computational Linguistics Atlanta, Georgia conference publication ott-etal-2013-negative https://aclanthology.org/N13-1053/ 2013-06 497 501