@InProceedings{lee-eskenazi:2012:SIGDIAL20121,
  author    = {Lee, Sungjin  and  Eskenazi, Maxine},
  title     = {An Unsupervised Approach to User Simulation: Toward Self-Improving Dialog Systems},
  booktitle = {Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue},
  month     = {July},
  year      = {2012},
  address   = {Seoul, South Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {50--59},
  url       = {http://www.aclweb.org/anthology/W12-1606}
}