@InProceedings{qiu-yang-jiang:2013:NAACL-HLT,
  author    = {Qiu, Minghui  and  Yang, Liu  and  Jiang, Jing},
  title     = {Mining User Relations from Online Discussions using Sentiment Analysis and Probabilistic Matrix Factorization},
  booktitle = {Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies},
  month     = {June},
  year      = {2013},
  address   = {Atlanta, Georgia},
  publisher = {Association for Computational Linguistics},
  pages     = {401--410},
  url       = {http://www.aclweb.org/anthology/N13-1041}
}