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Research on evacuation facility location models for practical applications

Research Project

Project/Area Number 20K19746
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 60010:Theory of informatics-related
Research InstitutionUniversity of Hyogo

Principal Investigator

Higashikawa Yuya  兵庫県立大学, 情報科学研究科, 准教授 (20749486)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords動的ネットワークフロー / 施設配置問題 / アルゴリズム / 避難計画 / 動的フローネットワーク / 最大後悔最小化 / 多項式時間アルゴリズム
Outline of Research at the Start

理論計算機科学において知られている動的ネットワークフローは, ネットワーク各所での横断時間や滞留時間を表現できるので, 実際の災害において重大な問題である交通渋滞による避難時間の遅延を直接的に扱うことができる. 本研究では, 動的ネットワークフローに基づく避難施設配置問題について, より現実の問題設定に沿う最適化問題として定式化した上で, 問題に対する効率的なアルゴリズムの開発を目指す.

Outline of Final Research Achievements

The objective of this study is to construct an evacuation facility location model for practical applications using dynamic network flows, which are well known in theoretical computer science. Since dynamic network flows are defined over time, one can directly deal with delays in evacuation time due to traffic congestion, which is a serious problem in actual disasters. In this study, we formulated the evacuation facility location problems as optimization problems based on dynamic network flows in more realistic settings by taking into account uncertainties in disasters, such as the distribution of evacuees or road closure statuses when a disaster occurs. We then investigated the combinatorial structure of the problems, based on which efficient algorithms were developed.

Academic Significance and Societal Importance of the Research Achievements

これまで, 避難計画に対して多くの研究がなされているが, 実応用を目指す研究はシミュレーションを用いる定性的アプローチが中心である一方, 理論研究の多くは現実への適用を真には考慮できていない. 本研究は, 現実の避難計画を策定するための理論基盤構築を目指している点で, 世界的に類を見ない独自性を有している.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Book (1 results)

  • [Int'l Joint Research] Simon Fraser University/University of Lethbridge(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Simon Fraser University/University of Lethbridge(カナダ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Almost linear time algorithms for minsum k-sink problems on dynamic flow path networks2021

    • Author(s)
      Yuya Higashikawa, Naoki Katoh, Junichi Teruyama, Koji Watase
    • Journal Title

      Theoretical Computer Science

      Volume: 873 Pages: 87-113

    • DOI

      10.1016/j.tcs.2021.05.003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Locating Evacuation Centers Optimally in Path and Cycle Networks2021

    • Author(s)
      Robert Benkoczi, Binay Bhattacharya, Yuya Higashikawa, Tsunehiko Kameda, Naoki Katoh, Junichi Teruyama
    • Journal Title

      Proceedings of the 21th International Symposium on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems (ATMOS2021)

      Volume: 96

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Minmax Regret 1-Sink Location Problems on Dynamic Flow Path Networks with Parametric Weights2021

    • Author(s)
      Tetsuya Fujie, Yuya Higashikawa, Naoki Katoh, Junichi Teruyama, Yuki Tokuni
    • Journal Title

      Proceedings of the 15th International Conference and Workshops (WALCOM 2021)

      Volume: LNCS12635 Pages: 52-64

    • DOI

      10.1007/978-3-030-68211-8_5

    • ISBN
      9783030682101, 9783030682118
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Almost Linear Time Algorithms for Minsum k-Sink Problems on Dynamic Flow Path Networks2020

    • Author(s)
      Yuya Higashikawa, Naoki Katoh, Junichi Teruyama, Koji Watase
    • Journal Title

      Proceedings of the 14th Annual International Conference on Combinatorial Optimization and Applications (COCOA2020)

      Volume: LNCS12577 Pages: 198-213

    • DOI

      10.1007/978-3-030-64843-5_14

    • ISBN
      9783030648428, 9783030648435
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 移動時間と容量が一定である辺を持つ双方向グリッドネットワークにおける最速避難問題2022

    • Author(s)
      戸國 友貴,加藤 直樹, 照山 順一,東川 雄哉
    • Organizer
      日本オペレーションズ・リサーチ学会 2022年秋季研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 格子状の動的フローネットワークにおける避難施設配置問題2022

    • Author(s)
      西井 彩乃,照山 順一,戸國 友貴,東川 雄哉
    • Organizer
      情報処理学会 第190回アルゴリズム研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パス状の動的フローネットワークにおける混合避難問題2022

    • Author(s)
      石川 理紗,加藤 直樹,東川 雄哉,ベンコツィ ロバート
    • Organizer
      情報処理学会 第190回アルゴリズム研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Minmax Regret 1-Sink Location Problems on Dynamic Flow Path Networks with Parametric Weights2021

    • Author(s)
      Tetsuya Fujie, Yuya Higashikawa, Naoki Katoh, Junichi Teruyama, Yuki Tokuni
    • Organizer
      The 15th International Conference and Workshops (WALCOM 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Almost Linear Time Algorithms for Minsum k-Sink Problems on Dynamic Flow Path Networks2020

    • Author(s)
      Yuya Higashikawa, Naoki Katoh, Junichi Teruyama, Koji Watase
    • Organizer
      The 14th Annual International Conference on Combinatorial Optimization and Applications (COCOA2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Book] Sublinear Computation Paradigm: Algorithmic Revolution in the Big Data Era2021

    • Author(s)
      N. Katoh, Y. Higashikawa, H. Ito, A. Nagao, T. Shibuya, A. Sljoka, K. Tanaka and Y. Uno (Eds.)
    • Total Pages
      418
    • Publisher
      Springer Singapore
    • ISBN
      9789811640940
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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