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Structure and computing efficiency of number-conserving cellular automata

Research Project

Project/Area Number 17K00015
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Theory of informatics
Research InstitutionHiroshima University

Principal Investigator

Imai Katsunobu  広島大学, 先進理工系科学研究科(工), 助教 (20253106)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsセルオートマトン / 保存性 / モーション表現
Outline of Final Research Achievements

The purpose of this study is to clarify the properties of number-conserving cellular automaton (NCCA), which models the properties of physical conservation of mass, as a particle movement model from the viewpoint of its computational power and computational complexity. We defined a new model called the hierarchical motion representation (HMR), which can represent the properties of NCCA in a hierarchical manner. We also constructed an algorithm to obtain the HMR of any NCCA rule, and obtained all the HMRs of NCCAs with neighborhood size less than five. Moreover, we proposed a method of representing NCCA rules by a combination of "pair" and "quad" patterns to clarify the relationship between motions and transition rules and showed some basic properties about it.

Academic Significance and Societal Importance of the Research Achievements

数-保存的セルオートマトン(NCCA)は、その質量保存に対応した性質から、交通流や流体などのシミュレーションに広く用いられているが、複雑になると規則設計が難しくなるため、ごく基本的な遷移規則しか利用されないという問題点があった。この研究は階層的モーション表現により粒子移動の観点と規則の観点のギャップを埋めることで、NCCAをより扱いやすくすることが目的である。また、ARデバイスによるNCCAのシミュレータにより実世界のモデル化にNCCAによるシミュレーションが有益であることを併せて示すことができると考えている。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results) Book (1 results) Funded Workshop (1 results)

  • [Journal Article] A New Structure of 2-State Number-Conserving Cellular Automata2021

    • Author(s)
      KONG Gil-Tak、IMAI Katsunobu、NAKANISHI Toru
    • Journal Title

      IEICE Transactions on Information and Systems

      Volume: E104.D Issue: 5 Pages: 673-678

    • DOI

      10.1587/transinf.2020EDP7123

    • NAID

      130008032896

    • ISSN
      0916-8532, 1745-1361
    • Year and Date
      2021-05-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Structure of Hierarchical Motion Representation of 2-state Number Conserving Cellular Automata2019

    • Author(s)
      Kong Gil-Tak, Katsunobu Imai, Toru Nakanishi
    • Journal Title

      Journal of Cellular Automata

      Volume: 14 Pages: 397-416

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Corona limits of tilings: Periodic case2019

    • Author(s)
      S Akiyama, J Caalim, K Imai, H Kaneko
    • Journal Title

      Discrete & Computational Geometry

      Volume: 61(3) Issue: 3 Pages: 626-652

    • DOI

      10.1007/s00454-018-0033-x

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ARを利用したセルオートマトンシミュレータの作成2020

    • Author(s)
      中原良真, 今井勝喜
    • Organizer
      令和2年度(第71回)電気・情報関連学会中国支部連合大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ARデバイスによるセル・オートマトン遷移の可視化2020

    • Author(s)
      中原良真, コン ギルタク, 今井勝喜
    • Organizer
      日本応用数理学会 2020年度 年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] On particle complexity of number conserving cellular automata2020

    • Author(s)
      Gil-Tak Kong, Katsunobu Imai
    • Organizer
      京都大学数理解析研究所RIMS共同研究 2020年度冬のLAシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] A representation of one-dimensional two-state number conserving cellular automata based on their value-1 rule patterns2019

    • Author(s)
      Katsunobu Imai
    • Organizer
      人工知能学会 合同研究会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] On enumeration of number-conserving cellular automata by value-1 patterns2019

    • Author(s)
      GT. Kong, K Imai
    • Organizer
      Proc. 12th Annual Meeting of the Asian Association for Algorithms and Computation (AAAC 2019)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A weakly universal three-dimensional Larger than Life cellular automaton2018

    • Author(s)
      K Imai, K Oroji, T Kubota
    • Organizer
      Proc. 6th International Workshop on Applications and Fundamentals of Cellular Automata (AFCA-CANDAR 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hierarchical Motion Representation of 2-State Number Conserving Cellular Automata2017

    • Author(s)
      G.T. Kong, K. Imai, T. Nakanishi
    • Organizer
      5th International Workshop on Applications and Fundamentals of Cellular Automata, (CANDAR-AFCA2017),
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] Reversibility and Universality2018

    • Author(s)
      A. Adamatzky (Ed)
    • Total Pages
      484
    • Publisher
      Springer
    • ISBN
      9783319732152
    • Related Report
      2017 Research-status Report
  • [Funded Workshop] 5th International Workshop on Applications and Fundamentals of Cellular Automata, (CANDAR-AFCA2017),2017

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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