Information Navigation System Based on POMDP that Tracks User Focus Koichiro Yoshino author Tatsuya Kawahara author 2014-06 text Proceedings of the 15th Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGDIAL) Kallirroi Georgila editor Matthew Stone editor Helen Hastie editor Ani Nenkova editor Association for Computational Linguistics Philadelphia, PA, U.S.A. conference publication yoshino-kawahara-2014-information 10.3115/v1/W14-4305 https://aclanthology.org/W14-4305/ 2014-06 32 40