@InProceedings{daubigney-geist-pietquin:2013:SIGDIAL,
  author    = {Daubigney, Lucie  and  Geist, Matthieu  and  Pietquin, Olivier},
  title     = {Model-free POMDP optimisation of tutoring systems with echo-state networks},
  booktitle = {Proceedings of the SIGDIAL 2013 Conference},
  month     = {August},
  year      = {2013},
  address   = {Metz, France},
  publisher = {Association for Computational Linguistics},
  pages     = {102--106},
  url       = {http://www.aclweb.org/anthology/W13-4014}
}