@InProceedings{hassan-abujbara-radev:2012:EMNLP-CoNLL,
  author    = {Hassan, Ahmed  and  Abu-Jbara, Amjad  and  Radev, Dragomir},
  title     = {Detecting Subgroups in Online Discussions by Modeling Positive and Negative Relations among Participants},
  booktitle = {Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {59--70},
  url       = {http://www.aclweb.org/anthology/D12-1006}
}