@InProceedings{tetreault-litman:2006:HLT-NAACL06-Main,
  author    = {Tetreault, Joel  and  Litman, Diane},
  title     = {Comparing the Utility of State Features in Spoken Dialogue Using Reinforcement Learning},
  booktitle = {Proceedings of the Human Language Technology Conference of the NAACL, Main Conference},
  month     = {June},
  year      = {2006},
  address   = {New York City, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {272--279},
  url       = {http://www.aclweb.org/anthology/N/N06/N06-1035}
}