Training and evaluation of an MDP model for social multi-user human-robot interaction Simon Keizer author Mary Ellen Foster author Oliver Lemon author Andre Gaschler author Manuel Giuliani author 2013-08 text Proceedings of the SIGDIAL 2013 Conference Maxine Eskenazi editor Michael Strube editor Barbara Di Eugenio editor Jason D Williams editor Association for Computational Linguistics Metz, France conference publication keizer-etal-2013-training https://aclanthology.org/W13-4036/ 2013-08 223 232