@InProceedings{ward-vega:2012:SIGDIAL2012,
  author    = {Ward, Nigel G.  and  Vega, Alejandro},
  title     = {A Bottom-Up Exploration of the Dimensions of Dialog State in Spoken Interaction},
  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     = {198--206},
  url       = {http://www.aclweb.org/anthology/W12-1628}
}