@InProceedings{gao-EtAl:2012:EMNLP-CoNLL,
  author    = {Gao, Jianfeng  and  Xie, Shasha  and  He, Xiaodong  and  Ali, Alnur},
  title     = {Learning Lexicon Models from Search Logs for Query Expansion},
  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     = {666--676},
  url       = {http://www.aclweb.org/anthology/D12-1061}
}