| 2017 | ICCE | Kanji Learning Support with Feedback based on Haptic and Pseudo-Haptic. | Takanori Kono, Yukihiro Matsubara, Masaru Okamoto |
| 2017 | ICCE | Augmented Reality based Learning Support System for Mental Rotation. | Midori Nakano, Yukihiro Matsubara, Masaru Okamoto, Noriyuki Iwane |
| 2017 | ICCE | AR-based Inorganic Chemistry Learning Support System using Mobile HMD. | Masaru Okamoto, Tsukasa Ishimura, Yukihiro Matsubara |
| 2014 | ICCE | Probabilistic Question Selection Approach for AR-based Inorganic Chemistry Learning Support System. | Masaru Okamoto, Ryoya Sumida, Yukihiro Matsubara |
| 2013 | ICCE | Virtual Environment for Pulley Experiment using Tablet-PC and Portable Haptic Device. | Naoki Hidani, Masaru Okamoto, Yukihiro Matsubara |
| 2013 | ICCE | Inorganic Chemistry Learning Support System using AR-based V irtual Environment and Question Recommendation Method. | Masaru Okamoto, Ryoya Sumida, Yukihiro Matsubara |
| 2012 | ICCE | AR-based Learning Support System for Inorganic Chemistry. | Masaru Okamoto, Ryoya Sumida, Yukihiro Matsubara |
| 2011 | IRI | Learning by body action: A virtual environment for refraction of light. | Noriyuki Iwane, Toru Kawasaki, Masaru Okamoto, Yukihiro Matsubara |
| 2004 | ISNN | Unsupervised Learning for Hierarchical Clustering Using Statistical Information. | Masaru Okamoto, Nan Bu, Toshio Tsuji |