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Design of Nanoscale Networks with Ultra-Fast Autonomous Recovery from Failures

Research Project

Project/Area Number 20H04140
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 60010:Theory of informatics-related
Research InstitutionHosei University

Principal Investigator

Sudo Yuichi  法政大学, 情報科学部, 准教授 (50643665)

Co-Investigator(Kenkyū-buntansha) 大下 福仁  福井工業大学, 工学部, 教授 (20362650)
泉 泰介  大阪大学, 大学院情報科学研究科, 准教授 (20432461)
増澤 利光  大阪大学, 大学院情報科学研究科, 教授 (50199692)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2023: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords個体群プロトコル / 個体群モデル / 自己安定アルゴリズム / 緩安定アルゴリズム / ゆらぎ / リーダ選挙問題 / ナノスケールネットワーク / 分散計算理論 / 自己安定 / 緩安定 / 故障耐性 / リーダ選挙 / 頑健性 / 分子計算
Outline of Research at the Start

本研究は,膨大な数の極小デバイスで構成されるナノスケールネットワークにおいて,一部デバイスの物理的な障害によって不安定な状態に陥ったネットワークを高速に復旧する技術の実現を目的とする.障害発生時に自律復旧する頑健なナノスケールネットワークの設計は極めて困難であることが知られており,実用化の障壁となっている.本研究は,障害が発生していない平常時にもわずかな確率で異常状態に陥る「ゆらぎ」を許容することをアプローチとして,ナノスケールネットワークにおいても超高速かつ頑健なアルゴリズム群を実現するための基盤技術を確立することを目指す.

Outline of Final Research Achievements

The objective of this research is to establish fundamental technologies for the rapid recovery of nanoscale networks, composed of a vast number of extremely small devices, from unstable states caused by failures such as physical malfunctions of devices. Designing robust nanoscale networks that can autonomously recover from failures is known to be extremely challenging and has been a significant barrier to practical implementation. This research has successfully realized a set of ultra-fast and robust algorithms for nanoscale networks by adopting an approach that tolerates "fluctuations," which are minor probabilities of abnormal states occurring even during normal operation without failures.

Academic Significance and Societal Importance of the Research Achievements

膨大な数の微細なデバイスで構成されるナノスケールネットワークにおいては故障耐性の付与が極めて重要である。前研究課題18K18000で、ナノスケールネットワークを表現する典型的な計算モデルである個体群モデルにおいて、様々なタスクを解決するための基軸となるリーダ選挙問題を解く頑健なアルゴリズムの高速化に成功していた。しかし、その実行時間は理論的限界と大きな乖離があった。本研究課題では、理論的限界まで高速化した頑健なアルゴリズムの設計に成功し、また、様々な関連モデルで頑健なアルゴリズムの設計に成功した。これらの成果は、ナノスケールネットワークの頑健性向上をもらたらし、実用化に大きく寄与する。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (46 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (18 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 18 results,  Open Access: 14 results) Presentation (27 results) (of which Int'l Joint Research: 24 results,  Invited: 6 results)

  • [Int'l Joint Research] University of Ottawa/Carleton University(カナダ)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Self-stabilizing 2-minimal dominating set algorithms based on loop composition2024

    • Author(s)
      Maruyama Syohei、Sudo Yuichi、Kamei Sayaka、Kakugawa Hirotsugu
    • Journal Title

      Theoretical Computer Science

      Volume: 983 Pages: 114314-114314

    • DOI

      10.1016/j.tcs.2023.114314

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fast gathering despite a linear number of weakly Byzantine agents<sup>†</sup>2024

    • Author(s)
      Jion Hirose, Junya Nakamura, Fukuhito Ooshita, and Michiko Inoue
    • Journal Title

      Concurrency and Computation: Practice and Experience

      Volume: - Issue: 14

    • DOI

      10.1002/cpe.8055

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Loosely-Stabilizing Algorithm on Almost Maximal Independent Set2023

    • Author(s)
      DONG Rongcheng、IZUMI Taisuke、KITAMURA Naoki、SUDO Yuichi、MASUZAWA Toshimitsu
    • Journal Title

      IEICE Transactions on Information and Systems

      Volume: E106.D Issue: 11 Pages: 1762-1771

    • DOI

      10.1587/transinf.2023EDP7075

    • ISSN
      0916-8532, 1745-1361
    • Year and Date
      2023-11-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Atomic cross-chain swaps with improved space, time and local time complexities2023

    • Author(s)
      Imoto Soichiro、Sudo Yuichi、Kakugawa Hirotsugu、Masuzawa Toshimitsu
    • Journal Title

      Information and Computation

      Volume: 292 Pages: 105039-105039

    • DOI

      10.1016/j.ic.2023.105039

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Location functions for self-stabilizing byzantine tolerant swarms2023

    • Author(s)
      Ashkenazi Yotam、Dolev Shlomi、Kamei Sayaka、Katayama Yoshiaki、Ooshita Fukuhito、Wada Koichi
    • Journal Title

      Theoretical Computer Science

      Volume: 954 Pages: 113755-113755

    • DOI

      10.1016/j.tcs.2023.113755

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Self-Stabilizing Distributed Algorithm for the Generalized Dominating Set Problem With Safe Convergence2022

    • Author(s)
      Kobayashi Hisaki、Sudo Yuichi、Kakugawa Hirotsugu、Masuzawa Toshimitsu
    • Journal Title

      The Computer Journal

      Volume: - Issue: 6 Pages: 1-25

    • DOI

      10.1093/comjnl/bxac021

    • Related Report
      2023 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Loosely-stabilizing maximal independent set algorithms with unreliable communications2022

    • Author(s)
      Dong Rongcheng、Sudo Yuichi、Izumi Taisuke、Masuzawa Toshimitsu
    • Journal Title

      Theoretical Computer Science

      Volume: 937 Pages: 69-84

    • DOI

      10.1016/j.tcs.2022.09.031

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Almost uniform deployment of mobile agents in dynamic rings2022

    • Author(s)
      Masahiro Shibata, Yuichi Sudo, Junya Nakamura, Yonghwan Kim
    • Journal Title

      Information and Computation

      Volume: 289 Pages: 104949-104949

    • DOI

      10.1016/j.ic.2022.104949

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Visibility-optimal gathering of seven autonomous mobile robots on triangular grids2022

    • Author(s)
      Masahiro Shibata, Masaki Oyabu, Yuichi Sudo, Junya Nakamura, Yonghwan Kim, Yoshiaki Katayama,
    • Journal Title

      International Journal of Networking and Computing

      Volume: 12 Issue: 1 Pages: 2-25

    • DOI

      10.15803/ijnc.12.1_2

    • NAID

      130008142107

    • ISSN
      2185-2839, 2185-2847
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time-Optimal Self-Stabilizing Leader Election on Rings in Population Protocols2021

    • Author(s)
      YOKOTA Daisuke、SUDO Yuichi、MASUZAWA Toshimitsu
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E104.A Issue: 12 Pages: 1675-1684

    • DOI

      10.1587/transfun.2020EAP1125

    • NAID

      130008123132

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2021-12-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A self-stabilizing algorithm for constructing a minimal reachable directed acyclic graph with two senders and two targets2021

    • Author(s)
      Kim Yonghwan、Shibata Masahiro、Sudo Yuichi、Nakamura Junya、Katayama Yoshiaki、Masuzawa Toshimitsu
    • Journal Title

      Theoretical Computer Science

      Volume: 874 Pages: 1-14

    • DOI

      10.1016/j.tcs.2021.05.005

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-Stabilizing Population Protocols With Global Knowledge2021

    • Author(s)
      Sudo Yuichi、Shibata Masahiro、Nakamura Junya、Kim Yonghwan、Masuzawa Toshimitsu
    • Journal Title

      IEEE Transactions on Parallel and Distributed Systems

      Volume: 32 Issue: 12 Pages: 3011-3023

    • DOI

      10.1109/tpds.2021.3076769

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exploration of dynamic tori by multiple agents2021

    • Author(s)
      Gotoh Tsuyoshi、Sudo Yuichi、Ooshita Fukuhito、Kakugawa Hirotsugu、Masuzawa Toshimitsu
    • Journal Title

      Theoretical Computer Science

      Volume: 850 Pages: 202-220

    • DOI

      10.1016/j.tcs.2020.11.004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Self-stabilizing 1-maximal Independent Set Algorithm2021

    • Author(s)
      Tanaka Hideyuki、Sudo Yuichi、Kakugawa Hirotsugu、Masuzawa Toshimitsu、Datta Ajoy K.
    • Journal Title

      Journal of Information Processing

      Volume: 29 Issue: 0 Pages: 247-255

    • DOI

      10.2197/ipsjjip.29.247

    • NAID

      130007998759

    • ISSN
      1882-6652
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic Ring Exploration with (H,S) View2020

    • Author(s)
      Gotoh Tsuyoshi、Sudo Yuichi、Ooshita Fukuhito、Masuzawa Toshimitsu
    • Journal Title

      Algorithms

      Volume: 13 Issue: 6 Pages: 141-141

    • DOI

      10.3390/a13060141

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time-Optimal Leader Election in Population Protocols2020

    • Author(s)
      Sudo Yuichi、Ooshita Fukuhito、Izumi Taisuke、Kakugawa Hirotsugu、Masuzawa Toshimitsu
    • Journal Title

      IEEE Transactions on Parallel and Distributed Systems

      Volume: 31 Issue: 11 Pages: 2620-2632

    • DOI

      10.1109/tpds.2020.2991771

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Self-stabilizing token distribution on trees with constant space2020

    • Author(s)
      Sudo Yuichi、Datta Ajoy K.、Larmore Lawrence L.、Masuzawa Toshimitsu
    • Journal Title

      Journal of Parallel and Distributed Computing

      Volume: 146 Pages: 201-211

    • DOI

      10.1016/j.jpdc.2020.07.007

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Move-optimal partial gathering of mobile agents without identifiers or global knowledge in asynchronous unidirectional rings2020

    • Author(s)
      Masahiro Shibata, Norikazu Kawata, Yuichi Sudo, Fukuhito Ooshita, Hirotsugu Kakugawa, and Toshimitsu Masuzawa
    • Journal Title

      Theoretical Computer Science

      Volume: - Pages: 92-109

    • DOI

      10.1016/j.tcs.2020.04.002

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] On Asynchrony, Memory, and Communication: Separations and Landscapes2023

    • Author(s)
      Paola Flocchini, Nicola Santoro, Yuichi Sudo, and Koichi Wada
    • Organizer
      27th International Conference on Principles of Distributed Systems (OPODIS 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Partial Gathering of Mobile Agents in Dynamic Tori2023

    • Author(s)
      Masahiro Shibata, Naoki Kitamura, Ryota Eguchi, Yuichi Sudo, Junya Nakamura, and Yonghwan Kim
    • Organizer
      2nd Symposium on Algorithmic Foundations of Dynamic Networks (SAND 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Graph exploration by a clumsy agent2023

    • Author(s)
      Yuichi Sudo
    • Organizer
      Moving and Computing (MAC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On computational power of mobile agents in node storage model.2023

    • Author(s)
      Taisuke Izumi
    • Organizer
      Moving and Computing (MAC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Crash-tolerant graph exploration by two energy-sharing mobile agents.2023

    • Author(s)
      Toshimitsu Masuzawa
    • Organizer
      Moving and Computing (MAC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Brief Announcement: Crash-Tolerant Exploration by Energy Sharing Mobile Agents2023

    • Author(s)
      Quentin Bramas, Toshimitsu Masuzawa, Sebastien Tixeuil
    • Organizer
      25th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Near Time-optimal Population Protocol for Self-stabilizing Leader Election on Rings with a Poly-logarithmic Number of States2023

    • Author(s)
      Daisuke Yokota, Yuichi Sudo, Toshimitsu Masuzawa and Fukuhito Ooshita
    • Organizer
      The 42nd ACM Symposium on Principles of Distributed Computing (PODC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Self-stabilizing 2-minimal Dominating Set Algorithm Based on Loop Composition in Networks of Girth at Least 72022

    • Author(s)
      Syohei Maruyama, Yuichi Sudo, Sayaka Kamei, Hirotsugu Kakugawa
    • Organizer
      The 36th IEEE International Parallel & Distributed Processing Symposium(IPDPS 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gathering of Mobile Robots with Defected Views2022

    • Author(s)
      Yonghwan Kim, Masahiro Shibata, Yuichi Sudo, Junya Nakamura, Yoshiaki Katayama, Toshimitsu Masuzawa
    • Organizer
      The 26th International Conference on Principles of Distributed Systems (OPODIS 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] One Bit Agent Memory is Enough for Snap-Stabilizing Perpetual Exploration of Cactus Graphs with Distinguishable Cycles2022

    • Author(s)
      Kohei Shimoyama, Yuichi Sudo, Hirotsugu Kakugawa, Toshimitsu Masuzawa
    • Organizer
      The 24th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Brief Announcement: Gathering Despite Defected View2022

    • Author(s)
      Yonghwan Kim, Masahiro Shibata, Yuichi Sudo, Junya Nakamura, Yoshiaki Katayama, Toshimitsu Masuzawa
    • Organizer
      The 36th International Symposium on Distributed Computing (DISC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Implementation and Evaluation of Leader Election in the Population Protocol Model Using an Emulation Environment2022

    • Author(s)
      Keitaro Watanabe, Hideharu Kojima, Yuichi Sudo, Naoto Yanai, Tatsuhiro Tsuchiya
    • Organizer
      The 20th International Workshop on Assurance in Distributed Systems and Networks (ADSN 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ビザンチンエージェントが混在する環境におけるモバイルエージェントの集合2022

    • Author(s)
      首藤裕一
    • Organizer
      電子情報通信学会 情報ネットワーク研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Brief Announcement: Gathering Despite a Linear Number of Weakly Byzantine Agents2022

    • Author(s)
      Jion Hirose, Junya Nakamura, Fukuhito Ooshita, Michiko Inoue
    • Organizer
      The 41st ACM Symposium on Principles of Distributed Computing (PODC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gathering Despite a Linear Number of Weakly Byzantine Agents2022

    • Author(s)
      Jion Hirose, Junya Nakamura, Fukuhito Ooshita, Michiko Inoue
    • Organizer
      The 14th International Workshop on Parallel and Distributed Algorithms and Applications (PDAA 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ビザンチンエージェントが混在する環境におけるモバイルエージェントの集合問題2022

    • Author(s)
      首藤裕一
    • Organizer
      電子情報通信学会 情報理論研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Time-Optimal Loosely-Stabilizing Leader Election in Population Protocols2021

    • Author(s)
      Yuichi Sudo, Ryota Eguchi, Taisuke Izumi, Toshimitsu Masuzawa
    • Organizer
      35th International Symposium on Distributed Computing
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Smoothed Analysis of Population Protocols2021

    • Author(s)
      Gregory Schwartzman, Yuichi Sudo
    • Organizer
      35th International Symposium on Distributed Computing
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asynchronous Gathering Algorithms for Autonomous Mobile Robots with Lights2021

    • Author(s)
      Rikuo Nakai, Yuichi Sudo, Koichi Wada
    • Organizer
      23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Loosely-Stabilizing Maximal Independent Set Algorithms with Unreliable Communications2021

    • Author(s)
      Rongcheng Dong, Yuichi Sudo, Taisuke Izumi, Toshimitsu Masuzawa
    • Organizer
      23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gathering of seven autonomous mobile robots on triangular grids2021

    • Author(s)
      Masahiro Shibata, Masaki Ohyabu, Yuichi Sudo, Junya Nakamura, Yonghwan Kim, Yoshiaki Katayama
    • Organizer
      23rd Workshop on Advances in Parallel and Distributed Computational Models
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Power of Global Knowledge on Self-stabilizing Population Protocols2020

    • Author(s)
      Yuichi Sudo, Masahiro Shibata, Yonghwan Kim, Junya Nakamura, Toshimitsu Masuzawa
    • Organizer
      27th International Colloquium on Structural Information and Communication Complexity
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Self-Stabilizing Construction of a Minimal Weakly ST-Reachable Directed Acyclic Graph2020

    • Author(s)
      Junya Nakamura, Masahiro Shibata, Yuichi Sudo, and Yonghwan Kim
    • Organizer
      39th International Symposium on Reliable Distributed Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Time-Optimal Self-stabilizing Leader Election on Rings in Population Protocols2020

    • Author(s)
      Daisuke Yokota, Yuichi Sudo, Toshimitsu Masuzawa
    • Organizer
      22nd International Symposium on Stabilization, Safety, and Security of Distributed Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficient Dispersion of Mobile Agents without Global Knowledge2020

    • Author(s)
      Takahiro Shintaku, Yuichi Sudo, Hirotsugu Kakugawa, Toshimitsu Masuzawa
    • Organizer
      22nd International Symposium on Stabilization, Safety, and Security of Distributed Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Uniform Deployment of Mobile Agents in Dynamic Rings2020

    • Author(s)
      Masahiro Shibata, Yuichi Sudo, Junya Nakamura, Yonghwan Kim
    • Organizer
      22nd International Symposium on Stabilization, Safety, and Security of Distributed Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 個体群プロトコルモデルにおけるリーダ選挙2020

    • Author(s)
      首藤裕一
    • Organizer
      令和二年電気関係学会関西連合大会
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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