@InProceedings{mehta-EtAl:2010:SIGDIAL,
  author    = {Mehta, Neville  and  Gupta, Rakesh  and  Raux, Antoine  and  Ramachandran, Deepak  and  Krawczyk, Stefan},
  title     = {Probabilistic Ontology Trees for Belief Tracking in Dialog Systems},
  booktitle = {Proceedings of the SIGDIAL 2010 Conference},
  month     = {September},
  year      = {2010},
  address   = {Tokyo, Japan},
  publisher = {Association for Computational Linguistics},
  pages     = {37--46},
  url       = {http://www.aclweb.org/anthology/W/W10/W10-4306}
}