Mining User Relations from Online Discussions using Sentiment Analysis and Probabilistic Matrix Factorization Minghui Qiu author Liu Yang author Jing Jiang 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 qiu-etal-2013-mining https://aclanthology.org/N13-1041/ 2013-06 401 410