| 2018 | AINA | Enhancing Money Saving Tips Recommendation System by Pairwise Preferences. | Takashi Araki, Chiaki Doi, Daizo Ikeda, Masaji Katagiri, Shuhei Kuwata, Tatsuya Kawasaki |
| 2018 | AINA | Is he Becoming an Excellent Customer for us? A Customer Level Prediction Method for a Customer Relationship Management System. | Chiaki Doi, Masaji Katagiri, Takashi Araki, Daizo Ikeda, Hiroshi Shigeno |
| 2017 | AINA | Family Structure Attribute Estimation Method for Product Recommendation System. | Chiaki Doi, Masaji Katagiri, Takashi Araki, Daizo Ikeda, Hiroshi Shigeno |
| 2017 | COMPSAC | A Deep-Learning-Based Method of Estimating Water Intake. | Yutaro Yamada, Takato Saito, Satoshi Kawasaki, Daizo Ikeda, Masaji Katagiri, Masafumi Nishimura, Hiroshi Mineno |
| 2012 | IC3K | Friendship Prediction using Semi-supervised Learning of Latent Features in Smartphone Usage Data. | Yuka Ikebe, Masaji Katagiri, Haruo Takemura |
| 2011 | ADMA | Social Influence Modeling on Smartphone Usage. | Masaji Katagiri, Minoru Etoh |
| 1988 | IROS | Solving Design Problems By A Heuristic Divide And Conquer Method. | Masaji Katagiri, Osamu Nakano |