@InProceedings{ma-EtAl:2012:SIGDIAL2012,
  author    = {Ma, Yi  and  Raux, Antoine  and  Ramachandran, Deepak  and  Gupta, Rakesh},
  title     = {Landmark-Based Location Belief Tracking in a Spoken Dialog System},
  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     = {169--178},
  url       = {http://www.aclweb.org/anthology/W12-1624}
}