Dialog State Tracking using Conditional Random Fields Hang Ren author Weiqun Xu author Yan Zhang author Yonghong Yan 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 ren-etal-2013-dialog https://aclanthology.org/W13-4071/ 2013-08 457 461