@InProceedings{jiao-EtAl:2006:COLACL,
  author    = {Jiao, Feng  and  Wang, Shaojun  and  Lee, Chi-Hoon  and  Greiner, Russell  and  Schuurmans, Dale},
  title     = {Semi-Supervised Conditional Random Fields for Improved Sequence Segmentation and Labeling},
  booktitle = {Proceedings of the 21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  pages     = {209--216},
  url       = {http://www.aclweb.org/anthology/P06-1027},
  doi       = {10.3115/1220175.1220202}
}