@InProceedings{engelbrecht-EtAl:2009:SIGDIAL,
  author    = {Engelbrecht, Klaus-Peter  and  G{\"o}dde, Florian  and  Hartard, Felix  and  Ketabdar, Hamed  and  M{\"o}ller, Sebastian},
  title     = {Modeling User Satisfaction with Hidden {M}arkov Models},
  booktitle = {Proceedings of the SIGDIAL 2009 Conference},
  month     = {September},
  year      = {2009},
  address   = {London, UK},
  publisher = {Association for Computational Linguistics},
  pages     = {170--177},
  url       = {http://www.aclweb.org/anthology/W09-3926}
}