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An epidemic simulation based on a multi-agent system distributed in a continuous space

Research Project

Project/Area Number 21K12064
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 61040:Soft computing-related
Research InstitutionSoka University

Principal Investigator

Unemi Tatsuo  創価大学, 理工学部, 教授 (50151915)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords感染シミュレーション / マルチエージェントモデル / 並列分散処理 / シナリオ分析 / 新型コロナウイルス感染症 / 人流・集会モデル / 合成人口 / 感染症対策 / マルチエージェント / 視覚化 / 並列計算応用
Outline of Research at the Start

連続値座標系をもつ2次元空間内に配置されるマルチエージェントに基づいた感染シミュレータについて,課題提案者らがこれまでに開発したシステムを発展させ,新型コロナウイルスに限らず,インフルエンザなど様々に性質の異なる感染症の流行について汎用的に適用可能なシステムを構築する。シミュレーション自身を高性能計算サーバで実行し,その操作や監視を汎用のウェブブラウザから行えるようウェブサービスとして実装する。

Outline of Final Research Achievements

A multi-agent simulator for infection dynamics assuming COVID-19 was developed and implemented to reproduce the time evolution of epidemic, as well as tools for statistical analysis and visualisation. It is also equipped with setups of possible scenarios in the subsequent situations. The model is characterised by the fact that it simulates the dynamics of the epidemic by moving one agent per population in a two-dimensional space based on a behavioural model, and by the aggregate results of individual characteristics, such as the excess frequency of contact and the degree to which population immunity is achieved. A reduction of the computation time was achieved by parallel processing to withstand a simulation of one million individuals, and at the same time, functions were implemented to facilitate the setting of various parameters.

Academic Significance and Societal Importance of the Research Achievements

2020年から23年初頭にかけて世界中で流行した新型コロナウィルス感染症 (COVID-19) は、過去に人類が経験した感染流行とは異なる特徴があり、対策の策定も困難を極めた。本研究で開発実装したシミュレータは、内閣府の対策室が組織したシミュレーションチームでも利用され、緊急事態宣言の発出規模と時期やワクチン接種戦略の決定にも重要な参考資料を提出してきた。シミュレータ開発の経験は、つぎに再び起きる可能性のある新たな感染症への速やかな対応のための構えの整備にすいても示唆を与えるものとなった。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 Other

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

  • [Journal Article] Population-Level Immunity for Transient Suppression of COVID-19 Waves in Japan from April 2021 to September 20222023

    • Author(s)
      Sachiko Kodera , Haruto Ueta , Tatsuo Unemi , Taisuke Nakata , Akimasa Hirata
    • Journal Title

      Vaccines

      Volume: 11 Issue: 9 Pages: 1457-1457

    • DOI

      10.3390/vaccines11091457

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Individual-based Epidemic Simulator and Its Visualization as Generative Art2022

    • Author(s)
      Tatsuo Unemi
    • Organizer
      the 25th Generative Art Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Individual-based epidemic simulator with vaccination and virus variants for scenario analysis2022

    • Author(s)
      Tatsuo Unemi
    • Organizer
      International Symposium on Artificial Life and Robotics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 模擬感染1: 個体ベース感染シミュレータ

    • URL

      http://www.intlab.soka.ac.jp/~unemi/SimEpidemic1/info/index-ja.html

    • Related Report
      2023 Annual Research Report 2021 Research-status Report
  • [Remarks] SimEpidemic 個体ベース感染シミュレータ 技術文書

    • URL

      http://www.intlab.soka.ac.jp/~unemi/SimEpidemic1/info/simepidemic-docs.html

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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