Koutaro Kamada

Ph.D student (2024.4-) / SPRING Researcher (2024.4-)

I am looking for a short-term internship (1~2weeks). Even just visiting would be fine. Please contact me (2025.4).

Research map Google Scholar Orcid

About me

■Affiliation

Yuizono Laboratory, Japan Advanced Institute of Science and Technology (JAIST).

■Education

  • 2018.4. - 2022.3. // Bachelor of Economics, Takasaki City University of Economics.
  • 2022.4. - 2024.3 // Master of Philosophy, Division of Transdisciplinary Sciences, Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology. Kanazawa University. [Outstanding students]
  • 2024.4. - // Ph.D student, Division of Transdisciplinary Sciences, Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology. Kanazawa University.

■Field of research

CSCW (Computer-Supported Cooperative Work), HCI (Human-Computer Interaction)

■Keyword

Remote collaboration, Human-AI collaboration, Decision-making, Virtual Reality.

■Award

  • Telecommunications Advancement Foundation Award 2023 - Telecom Interdisciplinary Research Student Award.
  • Awarding of Outstanding Students (MPhil) in JAIST (2024.3).
  • DICOMO2023 Outstanding Paper Award.

■Contact

Mail: kamada [at] jaist.ac.jp // kamada [at] stu.kanazawa-u.ac.jp

Project

■ Group Discussions (2022-):

Today, many people engage in remote computer-supported cooperative work using computer-mediated communication tools. This project investigates group dynamics in various types of group discussions, including text-based, video, and VR.In particular, we focus on the phenomenon of social loafing and are developing efficient and effective CMC tools based on an understanding of its mechanisms.

Keywords: Remote Collaboration, Computer-Mediated Communication, Decision‑making, Group Dynamics, Social Loafing

■ Human-AI Collaborative Decision-making (2023-):

AI-based decision-making is expected to lead to better decision-making, and human‑AI collaboration (such as Chat‑gpt) has become widespread in society. On the other hand, users' overreliance in AI can lead to lower quality of decision-making. This project is to investigate and develop an AI‑human interface to guide better AI-based decision-making.

Keywords: Human-AI Collaboration, AI-Based decision-making

■ VR system for psychiatric disorders (2023-):

We are developing a VR system for mental disorders. For example, we are aiming to measure social cognitive functions, which are strongly related to schizophrenia, in a way that is more realistic by using VR.

Keywords: VR, Social Cognitive function, psychiatric disorder

Publication

■ International Paper

  • Koutaro Kamada, Masami Takahashi, Naomi Yamashita.: "Exploring Mismatches in Self‑Others’ Perceptions of Effort in Videoconferencing", Extended Abstracts of the 2025 CHI Conference on Human Factors in Computing Systems.
  • Koutaro Kamada, Haruomi Takahashi, Tzu‑Yang Wang, Takaya Yuizono.: "Exploring the Effect of User Trust in Generative AI on Decision‑Making in Semi‑Structured Problem." International Conference on Human‑Computer Interaction (HCI International 2025). (Oral, Peer‑reviewed, Full paper)
  • Koutaro Kamada, Ryuya Watarai, Tzu‑Yang Wang, Kentaro Takashima, Yasuyuki Sumi, Takaya Yuizono.: “Explorative study of perceived social loafing in VR group discussion: A comparison between the poster presentation environment and the typical conference environment”, IFIP TC.13 International Conference on Human‑Computer Interaction (INTERACT), LNCS, vol 14144, pp. 115‑134, (Aug. 2023). (Oral, Peer‑reviewed, Full paper)

■ Domestic Paper (Japanese)

  • 渡会隆哉, 鎌田光太郎, 角康之, 王子洋, 高島健太郎, 由井薗隆也.“VR会議における他者との対面量に着目した会議の質の分析”, 情報処理学会論文誌コンシューマ・デバイス＆システム（CDS）, 15, 1, 1‑10.（論文誌）
  • 鎌田光太郎, 渡会隆哉, 王子洋, 高島健太郎, 角康之, 由井薗隆也．: “VRグループ・ディスカッションにおける会議形態の違いがターンテイキングに与える影響”， 第200回ヒューマンインタフェース学会研究会「コミュニケーション支援および一般」, ヒューマンインタフェース学会研究報告集, 25(3), pp.97–102, (May. 2023). (Oral, Non‑review)
  • 渡会隆哉, 鎌田光太郎, 王子洋, 高島健太郎, 角康之, 由井薗隆也．: "VR会議における他者との対面量に着目した会議の質評価の試み", DICOMO 2023 シンポジウム, (Jul. 2023). (Oral, Non‑review, 優秀論文賞, 山下記念賞)
  • 羅海洋, 由井薗隆也, 鎌田光太郎, 王子洋．: “感情変化に注目した機械学習による冒険ストーリー生成の試行”, DICOMO 2023 シンポジウム, (Jul. 2023). (Oral, Non‑review).

■ Poster/Demo

  • 鎌田光太郎, 篠田怜, 松井三枝, 由井薗隆也. “VRを利用した社会認知機能の測定手法の試作”, インタラクション2025．
  • 劉 牧辰，松井三枝，堂本千晶，滝口雄太，由井薗隆也，鎌田光太郎．“メタバースによるショッピング課題の作成と実用可能性の検討“, 第8回（2024年度第1回）「生涯学」領域会議, (Aug. 2024). (Non‑review)
  • 渡会隆哉, 鎌田光太郎, 角康之, 王子洋, 由井薗隆也, 高島健太郎．“VR会議における他者との対面量と言語行動の対応関係の分析“, インタラクション2024 第28回 一般社団法人情報処理学会シンポジウム, (Mar. 2024). (Non‑review)

Experience

Contribution