@InProceedings{li-EtAl:2012:EMNLP-CoNLL1,
  author    = {Li, Shoushan  and  Ju, Shengfeng  and  Zhou, Guodong  and  Li, Xiaojun},
  title     = {Active Learning for Imbalanced Sentiment Classification},
  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     = {139--148},
  url       = {http://www.aclweb.org/anthology/D12-1013}
}