@InProceedings{yoshino-suzuki-nakamura:2017:W17-55,
  author    = {Yoshino, Koichiro  and  Suzuki, Yu  and  Nakamura, Satoshi},
  title     = {Information Navigation System with Discovering User Interests},
  booktitle = {Proceedings of the 18th Annual SIGdial Meeting on Discourse and Dialogue},
  month     = {August},
  year      = {2017},
  address   = {Saarbrücken, Germany},
  publisher = {Association for Computational Linguistics},
  pages     = {356--359},
  abstract  = {We demonstrate an information navigation system for sightseeing domains that
	has 
	a dialogue interface for discovering user interests for tourist activities.
	The system discovers interests of a user with focus detection on user
	utterances, 
	and  proactively presents related information to the discovered user interest.
	A partially observable Markov decision process (POMDP)-based dialogue manager,
	which is extended with user focus states,
	controls the behavior of the system to provide information with several
	dialogue
	acts for providing information.
	We transferred the belief-update function and the policy of the manager from
	other system 
	trained on a different domain to show the generality of defined dialogue acts
	for 
	our information navigation system.},
  url       = {http://aclweb.org/anthology/W17-5542}
}