@InProceedings{li-EtAl:2011:EMNLP1,
  author    = {Li, Zhifei  and  Wang, Ziyuan  and  Eisner, Jason  and  Khudanpur, Sanjeev  and  Roark, Brian},
  title     = {Minimum Imputed-Risk: Unsupervised Discriminative Training for Machine Translation},
  booktitle = {Proceedings of the 2011 Conference on Empirical Methods in Natural Language Processing},
  month     = {July},
  year      = {2011},
  address   = {Edinburgh, Scotland, UK.},
  publisher = {Association for Computational Linguistics},
  pages     = {920--929},
  url       = {http://www.aclweb.org/anthology/D11-1085}
}