Distributed Computing in Motion

• Project/Area Number: 17K19982
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Research Field: Information science, computer engineering, and related fields
• Research Institution: Kyushu University
• Principal Investigator: Kijima Shuji 九州大学, システム情報科学研究院, 准教授 (70452307)
• Project Period (FY): 2017-06-30 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: アルゴリズム理論 / 分散計算論 / 自律分散ロボット

Outline of Final Research Achievements

The theory of distributed computing is concerned with the way of integrating small computations. Environmental changes may not be desirable for a stable computation, while this research investigated how to utilize "motions" in distributed computing.
In the research, we obtained some results on designing algorithms for autonomous mobile robots and module robots. We also have developed some new research topics about computability of robots with a limited visibility, and about random walks on dynamic graphs.

Academic Significance and Societal Importance of the Research Achievements

爆発的な普及と発展を見せる人工知能，ドローンやKilobotsなどの群ロボット，IoTや安価センサーネットワークなど，大規模・自律分散計算の社会的需要は高まっている．また，分子計算，化学反応系，ゲーム理論など潜在的/長期的な応用も多い．現実の計算においては，環境，計算主体とも時々刻々と変化するが，このような変化する環境での計算理論は未成熟で，世界的にも関心の高い課題である．上述の社会的需要も踏まえ，本課題の取り組む基礎理論の展開は重要といえる．

Research Products

• [Journal Article] Can A Skywalker Localize The Midpoint of A Rope? (2021)
  • Author(s): Akihiro Monde, Yukiko Yamauchi, Shuji Kijima, Masafumi Yamashita
  • Journal Title: ACM Transactions on Computation Theory Volume: 採録決定 Issue: 3 Pages: 1-23
  • DOI: 10.1145/3460954
  • Peer Reviewed
• [Journal Article] How Many Vertices Does a Random Walk Miss in a Network with Moderately Increasing the Number of Vertices? (2021)
  • Author(s): Kijima Shuji、Shimizu Nobutaka、Shiraga Takeharu
  • Journal Title: Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms (SODA 2021) Volume: 1 Pages: 106-122
  • DOI: 10.1137/1.9781611976465.8
  • ISBN: 9781611976465
  • Peer Reviewed
• [Journal Article] Search by a metamorphic robotic system in a finite 2D square Grid (2021)
  • Author(s): Doi Keisuke、Yamauchi Yukiko、Kijima Shuji、Yamashita Masafumi
  • Journal Title: Information and Computation Volume: 印刷中 Pages: 104695-104695
  • DOI: 10.1016/j.ic.2021.104695
  • Peer Reviewed
• [Journal Article] Exploration of Finite 2D Square Grid by a Metamorphic Robotic System (2018)
  • Author(s): Doi Keisuke、Yamauchi Yukiko、Kijima Shuji、Yamashita Masafumi
  • Journal Title: Lecture Notes in Computer Science Volume: 11201 Pages: 96-110
  • DOI: 10.1007/978-3-030-03232-6_7
  • ISBN: 9783030032319, 9783030032326
  • Peer Reviewed
• [Journal Article] Plane formation by synchronous mobile robots without chirality (2018)
  • Author(s): Yusaku Tomita, Yukiko Yamauchi, Shuji Kijima, Masafumi Yamashita
  • Journal Title: 21st International Conference on Principles of Distributed Systems (OPODIS 2017) Volume: 8633
  • DOI: 10.4230/LIPIcs.OPODIS.2017.13
  • Peer Reviewed / Open Access
• [Journal Article] Self-stabilizing Localization of the Middle Point of a Line Segment by an Oblivious Robot with Limited Visibility (2017)
  • Author(s): Akihiro Monde, Yukiko Yamauchi, Shuji Kijima, Masafumi Yamashita
  • Journal Title: Lecture Notes in Computer Science Volume: 10616 Pages: 172-186
  • DOI: 10.1007/978-3-319-69084-1_12
  • ISBN: 9783319690834, 9783319690841
  • Peer Reviewed