@InProceedings{koo-collins:2005:HLTEMNLP,
  author    = {Koo, Terry  and  Collins, Michael},
  title     = {Hidden-Variable Models for Discriminative Reranking},
  booktitle = {Proceedings of Human Language Technology Conference and Conference on Empirical Methods in Natural Language Processing},
  month     = {October},
  year      = {2005},
  address   = {Vancouver, British Columbia, Canada},
  publisher = {Association for Computational Linguistics},
  pages     = {507--514},
  url       = {http://www.aclweb.org/anthology/H/H05/H05-1064}
}