| 2026 | CHI | Externalizing Intent: Preserving Semantic Alignment in Graphic Recording Generation from Dialogue. | Yoko Ishii, Ichiro Umata, Ryo Ishii |
| 2025 | CHIRA | Effect of 360-Degree Video with View Manipulation on Communication and Creative Output in Hybrid Work Environments. | Takumi Ishikawa, Ichiro Umata, Tsuneo Kato, Sumaru Niida |
| 2024 | HCI | Supporting Hybrid Interaction: A Design Approach for Mitigating the "Barrier" Encountered by Remote Participants in Hybrid Working Environments. | Ichiro Umata, Takumi Ishikawa, Sumaru Niida, Tsuneo Kato |
| 2021 | HCI | Estimating Interaction State from Nonverbal Cues and Utterance Events: A Preliminary Study to Support Ideation Facilitation in Living Lab. | Ichiro Umata, Sumaru Niida, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2020 | CogSci | Quantitative Analyses of Gaze Duration from the viewpoints of Grounding Acts, Conversation Topic, and Linguistic Proficiency. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2020 | HCI | Effects of Linguistic Proficiency and Conversation Topic on Listener's Gaze in Triadic Conversation. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2019 | HCI | Gaze from and Toward the Silent Third Participant in a Triadic Conversation. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2019 | ICMI | Floor Apportionment Function of Speaker's Gaze in Grounding Acts. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2018 | ICMI | Floor Apportionment and Mutual Gazes in Native and Second-Language Conversation. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2017 | CogSci | Gaze during utterances and silence in L1 and L2 Conversations. | Ichiro Umata, Koki Ijuin, Tsuneo Kato, Seiichi Yamamoto |
| 2016 | LREC | Quantitative Analysis of Gazes and Grounding Acts in L1 and L2 Conversations. | Ichiro Umata, Koki Ijuin, Mitsuru Ishida, Moe Takeuchi, Seiichi Yamamoto |
| 2014 | ICMI | Eye Gaze Analyses in L1 and L2 Conversations: From the Perspective of Listeners' Eye Gaze Activity. | Koki Ijuin, Keiko Taguchi, Ichiro Umata, Seiichi Yamamoto |
| 2013 | CogSci | Differences in Interactional Attitudes in Second Language Conversations: From the Perspective of Expertise. | Ichiro Umata, Seiichi Yamamoto, Kosuke Kabashima, Masafumi Nishida |
| 2013 | CogSci | Differences in Interactional Attitudes in Native and Second Languag Conversations: Quantitative Analyses of Multimodal Three-Party Corpus. | Seiichi Yamamoto, Keiko Taguchi, Ichiro Umata, Kosuke Kabashima, Masafumi Nishida |
| 2013 | HCI | Detection of Division of Labor in Multiparty Collaboration. | Noriko Suzuki, Tosirou Kamiya, Ichiro Umata, Sadanori Ito, Shoichiro Iwasawa, Mamiko Sakata, Katsunori Shimohara |
| 2013 | ICMI | Effects of language proficiency on eye-gaze in second language conversations: toward supporting second language collaboration. | Ichiro Umata, Seiichi Yamamoto, Koki Ijuin, Masafumi Nishida |
| 2012 | CogSci | What role do you play in group activity? Objective evaluation through third parties. | Noriko Suzuki, Tosirou Kamiya, Ichiro Umata, Sadanori Ito, Shoichiro Iwasawa, Mamiko Sakata, Katsunori Shimohara |
| 2012 | CSCW | Analyzing the structure of the emergent division of labor in multiparty collaboration. | Noriko Suzuki, Tosirou Kamiya, Ichiro Umata, Sadanori Ito, Shoichiro Iwasawa |
| 2007 | HCI | Toward Adaptive Interaction - The Effect of Ambient Sounds in an Ultra-Realistic Communication System. | Noriko Suzuki, Ichiro Umata, Tatsuya Kitamura, Hiroshi Ando, Naomi Inoue |
| 2004 | DIAGRAMS | Using Graphics to Communicate Across Cultures. | Nicolas Fay, Nik Swoboda, Takugo Fukaya, Ichiro Umata, Yasuhiro Katagiri |
| 2004 | DIAGRAMS | Speech and Graphical Interaction in Multimodal Communication. | Ichiro Umata, Atsushi Shimojima, Yasuhiro Katagiri |
| 2002 | DIAGRAMS | Movement Conceptualizations in Graphical Communication. | Ichiro Umata, Yasuhiro Katagiri, Atsushi Shimojima |