User Goal Change Model for Spoken Dialog State Tracking Yi Ma author 2013-06 text Proceedings of the 2013 NAACL HLT Student Research Workshop Annie Louis editor Richard Socher editor Julia Hockenmaier editor Eric K Ringger editor Association for Computational Linguistics Atlanta, Georgia conference publication ma-2013-user https://aclanthology.org/N13-2013/ 2013-06 91 97