| 2018 | ICCE | Lecturer's Silhouette Display System for Distance Education Using Screen Sharing between Interactive Whiteboards. | Satoru Komatsu, Yasuo Miyoshi, Yuichiro Mori, Ryo Okamoto |
| 2018 | ICCE | Proposal of Balloon Type Drone for Overhead Shooting in Remote Joint Classroom. | Ryo Okamoto, Yasuo Miyoshi, Yuichiro Mori |
| 2017 | AISTATS | Consistent and Efficient Nonparametric Different-Feature Selection. | Satoshi Hara, Takayuki Katsuki, Hiroki Yanagisawa, Takafumi Ono, Ryo Okamoto, Shigeki Takeuchi |
| 2014 | ICCE | Evaluation of Difficulty Estimation for Learning Materials Recommendation. | Yasuo Miyoshi, Kazuhiro Suzuki, Ken-ichi Shiota, Ryo Okamoto |
| 2014 | ICCE | Presentation Reconstruction Method for Peer Review Support in Presentation Rehearsal. | Akihiro Tanikawa, Ryo Okamoto, Akihiro Kashihara |
| 2013 | ICCE | Encouraging Each Other in the Community Site for Habit Development. | Yasuo Miyoshi, Ryo Okamoto |
| 2013 | ICCE | Review Support System with Visual-Oriented Annotation Method for Presentation Rehearsal. | Ryo Okamoto, Yuto Watanabe, Akihiro Kashihara |
| 2012 | ICCE | Design of Learning Hyperspace Construction System for Knowledge Refinement in Self-Directed Learning. | Yukinori Naruta, Ryo Okamoto |
| 2011 | ICCE | Learning Objectives in Web-Based Continuous Inquiry Learning Using Social Bookmark. | Yasuo Miyoshi, Ryo Tadokoro, Masahiro Yoshizawa, Ryo Okamoto, Kazuhide Kanenishi |
| 2011 | ICCE | Knowledge Publishing Method for Knowledge Refinement in Self-Directed Learning. | Ryo Okamoto, Yukinori Naruta |
| 2011 | KES | Back-Review Support Method for Presentation Rehearsal Support System. | Ryo Okamoto, Akihiro Kashihara |
| 2008 | ICALT | Facilitating Presentation Rehearsal Review with Realtime-Created Hypervideo Technique. | Ryo Okamoto, Akihiro Kashihara |
| 2007 | ICCE | Presentation Review Supporting Environment with Realtime-Created Hypervideo Technique. | Ryo Okamoto, Akihiro Kashihara |
| 1998 | SMC | A construction of an intelligent environmental language learning system with interactive 3D quasi environment. | Ryo Okamoto, Masafumi Sawamatsu |