Ryo Ishii, Ryuichiro Higashinaka, Koh Mitsuda, Taichi Katayama, Masahiro Mizukami, Junji Tomita, Hidetoshi Kawabata, Emi Yamaguchi, Noritake Adachi, Yushi Aono, "Methods of Efficiently Constructing Text-dialogue-agent System using Existing Anime Character", Journal of Information Processing, Vol.62, No.1, 2021.
Ryo Ishii, Kazuhiro Otsuka, Ryuichiro Higashinaka, Junji Tomita, "Prediction of Who Will Be Next Speaker and When Using Mouth-Opening Pattern in Multi-Party Conversation", Multimodal Technologies Interact, 3(4), 70, 2019.
Shiro Kumano, Kazuhiro Otsuka, Ryo Ishii, and Junji Yamato, "Collective First-Person Vision for Automatic Gaze Analysis in Multiparty Conversations," IEEE Transactions on Multimedia, Vol. 19, No. 1, pp. 107-122, 2017.
Ryo Ishii, Kazuhiro Otsuka, Shiro Kumano, Junji Yamato, "Using Respiration of Who Will be the Next Speaker and When in Multiparty Meetings", The ACM Transactions on Interactive Intelligent Systems (TiiS), Vol. 6, No. 2, 2016.
Ryo Ishii, Kazuhiro Otsuka, Shiro Kumano, Junji Yamato, "Prediction of Who Will be Next Speaker and When using Gaze Behavior in Multi-Party Meetings", The ACM Transactions on Interactive Intelligent Systems (TiiS), Volume 6 Issue 1, Article No. 4, 2016.
Ryo Ishii, Yukiko, I. Nakano, Toyoaki Nishida, "Gaze Awareness in Conversational Agents: Estimating User's Conversational Engagement using Eye-gaze", The ACM Transactions on Interactive Intelligent Systems (TiiS), Special issue on interaction with smart objects, Special section on eye gaze and conversation archive, Volume 3 Issue 2, 2013.