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協力ゲーム理論におけるシャープレイ値の理論研究

Research Project

Project/Area Number 14J03362
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Economic theory
Research InstitutionWaseda University

Principal Investigator

横手 康二  早稲田大学, 政治経済学術院, 特別研究員(DC1)

Project Period (FY) 2014-04-25 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2016: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2015: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2014: ¥600,000 (Direct Cost: ¥600,000)
Keywordsシャープレイ値 / 協力ゲーム / 公理化 / 単調性 / 割り当て市場 / 離散凸解析 / コア / 競争均衡 / ゲーム理論 / 配分問題
Outline of Annual Research Achievements

研究計画に従いシャープレイ値に関する理論研究を行い計4本の論文を発表した。そのうち3本は既に国際学術誌で出版されている。
まず、指導教官である早稲田大学の船木教授と福岡大学の近郷准教授との共同研究で、シャープレイ値の類概念に関する研究を行った。Myerson (1980)が導入した balanced contributions property を弱めた公理を考え、その公理と他の標準的な公理が特徴づける解のクラスを調べた。その結果、egalitarian Shapley value 等のシャープレイ値の類概念を含む広範な解のクラスが特徴づけられることを明らかにした。
2016年6月から7月にはドイツのライプチヒに滞在し、HHL Leipzig graduate school of management の Andre Casajus 教授と共同研究を行った。新たな公理「weak differential marginality」を分析した。この公理は、「二人のプレイヤーの生産性が同じだけ変化した場合、両者の最終的な取り分は同じ方向へ変化する」ことを要請する。Weak differential marginality は、効率性・ナルプレイヤー公理といった標準的な公理と組み合わさることで、シャープレイ値を特徴づけることを証明した。本研究成果はJournal of Economic Theory で出版されている。さらに、Casajus 教授と共に、協力ゲーム理論を用いて望ましい税制度の在り方に関する研究も行った。比例分配という税制度は、いくつかの自然な公理によってサポートできることを明らかにした。本研究成果はEconomics Letters で出版されている。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (21 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 5 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 6 results)

  • [Int'l Joint Research] Leipzig graduate school of management(Germany)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Weak differential marginality and the Shapley value2017

    • Author(s)
      Andre Casajus, Koji Yokote
    • Journal Title

      Journal of Economic Theory

      Volume: 167 Pages: 274-284

    • DOI

      10.1016/j.jet.2016.11.007

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Weak differential monotonicity, flat tax, and basic income2017

    • Author(s)
      Koji Yokote, Andre Casajus
    • Journal Title

      Economics Letters

      Volume: 151 Pages: 100-103

    • DOI

      10.1016/j.econlet.2016.12.011

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The balanced contributions property for symmetric players2017

    • Author(s)
      Koji Yokote, Takumi Kongo
    • Journal Title

      Operations Research Letters

      Volume: 45 Issue: 3 Pages: 227-231

    • DOI

      10.1016/j.orl.2017.03.005

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Weighted values and the core in NTU games2016

    • Author(s)
      Koji Yokote
    • Journal Title

      International Journal of Game Theory

      Volume: 印刷中 Issue: 3 Pages: 631-654

    • DOI

      10.1007/s00182-016-0550-x

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Core and competitive equilibria: An approach from discrete convex analysis2016

    • Author(s)
      Koji Yokote
    • Journal Title

      Journal of Mathematical Economics

      Volume: 66 Pages: 1-13

    • DOI

      10.1016/j.jmateco.2016.06.007

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] A New Basis and the Shapley Value,” Mathematical Social Sciences2016

    • Author(s)
      Yokote Koji, Yukihiko Funaki and Yoshio Kamijo
    • Journal Title

      Mathematical Social Sciences,

      Volume: 80 Pages: 21-24

    • DOI

      10.1016/j.mathsocsci.2015.12.003

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Weak Addition Invariance and axiomatization of the weighted Shapley value2014

    • Author(s)
      Koji Yokote
    • Journal Title

      International Journal of Game Theory

      Volume: なし Issue: 2 Pages: 275-293

    • DOI

      10.1007/s00182-014-0429-7

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Presentation] The balanced contributions property for equal contributors2016

    • Author(s)
      Koji Yokote
    • Organizer
      The 3rd Workshop on Cooperative Game Theory in Business Practice
    • Place of Presentation
      Leipzig, Germany
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cumulative offer process with continuous transfers2016

    • Author(s)
      Koji Yokote
    • Organizer
      12th European Meeting on Game Theory (SING12)
    • Place of Presentation
      Odense, Denmark
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cumulative offer process with continuous transfers2016

    • Author(s)
      Koji Yokote
    • Organizer
      The 5th World Congress of the Game Theory Society
    • Place of Presentation
      Maastricht, the Netherlands
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cumulative offer process with continuous transfers2016

    • Author(s)
      Koji Yokote
    • Organizer
      The 9th Pan Pacific Game Theory Conference and TGU Empirical Analyses of Political Economy Symposium
    • Place of Presentation
      早稲田大学
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cumulative offer process with continuous transfers (ポスター報告)2016

    • Author(s)
      Koji Yokote
    • Organizer
      日本経済学会 2016年度秋期大会
    • Place of Presentation
      早稲田大学
    • Related Report
      2016 Annual Research Report
  • [Presentation] Core and competitive equilibria: an approach from discrete convex analysis2015

    • Author(s)
      Koji Yokote
    • Organizer
      第21回DCコンファレンス
    • Place of Presentation
      慶応義塾大学
    • Year and Date
      2015-10-12
    • Related Report
      2015 Annual Research Report
  • [Presentation] Core and competitive equilibrium: an approach from discrete convex analysis2015

    • Author(s)
      Koji Yokote
    • Organizer
      East Asian Game Theory Conference 2015 (EAGT 2015)
    • Place of Presentation
      早稲田大学
    • Year and Date
      2015-08-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Core and competitive equilibrium: an approach from discrete convex analysis2015

    • Author(s)
      Koji Yokote
    • Organizer
      The Third International Workshop on Market Design Technologies for Sustainable Development
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2015-08-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] Competitive equilibrium and the Core: discrete convex approach2015

    • Author(s)
      Koji Yokote
    • Organizer
      日本経済学会2015年度春季大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2015-05-23
    • Related Report
      2015 Annual Research Report
  • [Presentation] Core and competitive equilibrium: discrete convex approach2015

    • Author(s)
      Koji Yokote
    • Organizer
      Joint conferences on “Logic, Game Theory, and Social Choice 8” and “The 8th Pan-Pacific Conference on Game Theory” (LGS 8 & 8 PPCGT)
    • Place of Presentation
      Academia Sinica in Taipei, Taiwan
    • Year and Date
      2015-05-19
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Weighted values and the Core in NTU games2014

    • Author(s)
      Koji Yokote
    • Organizer
      第20回DCコンファレンス
    • Place of Presentation
      福岡大学
    • Year and Date
      2014-10-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] Relationship between the Shapley value and other solutions2014

    • Author(s)
      Koji Yokote
    • Organizer
      14th SAET Conference on Current Trends in Economics
    • Place of Presentation
      早稲田大学
    • Year and Date
      2014-08-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] Consistent weighted Shapley values and the Core in NTU games2014

    • Author(s)
      Koji Yokote
    • Organizer
      Spain-Italy-Netherlands Meeting on Game Theory 10 (SING 10)
    • Place of Presentation
      Krakow, Poland
    • Year and Date
      2014-07-09
    • Related Report
      2014 Annual Research Report

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Published: 2015-01-22   Modified: 2024-03-26  

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