@InProceedings{gao-EtAl:2007:ACLMain,
  author    = {Gao, Jianfeng  and  Andrew, Galen  and  Johnson, Mark  and  Toutanova, Kristina},
  title     = {A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing},
  booktitle = {Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics},
  month     = {June},
  year      = {2007},
  address   = {Prague, Czech Republic},
  publisher = {Association for Computational Linguistics},
  pages     = {824--831},
  url       = {http://www.aclweb.org/anthology/P/P07/P07-0104}
}