ゲーム理論の新展開：協力メカニズムの解明

• Project/Area Number: 26245024
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Economic theory
• Research Institution: Kyoto University (2015-2018); Hitotsubashi University (2014)
• Principal Investigator: 岡田 章 京都大学, 経済研究所, 教授 (90152298)
• Co-Investigator(Kenkyū-buntansha): 関口 格 京都大学, 経済研究所, 教授 (20314461) ; 蓼沼 宏一 一橋大学, 大学院経済学研究科, 教授 (50227112) ; 宇井 貴志 一橋大学, 大学院経済学研究科, 教授 (60312815) ; 梶井 厚志 京都大学, 経済研究所, 教授 (80282325) ; 今井 晴雄 京都大学, 経済研究所, 教授 (10144396)
• Project Period (FY): 2014-04-01 – 2019-03-31
• Project Status: Declined (Fiscal Year 2018)
• Budget Amount: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000); Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000); Fiscal Year 2017: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000); Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000); Fiscal Year 2015: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000); Fiscal Year 2014: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
• Keywords: ミクロ経済理論 / ゲーム理論 / 協力メカニズム / 交渉理論 / 繰り返しゲーム

Outline of Annual Research Achievements

本研究課題では、ゲーム理論の先端的な研究手法を用いて、経済社会における多様な協力メカニズムの特性を、(1)人間行動の行動経済学的基盤、(2)契約、交渉、組織のゲーム分析、(3)社会選択論と制度形成、の三つの視点から考察する。
平成29年度の研究実績は、次のとおりである。「人間行動の行動経済学的基盤」の研究では、予備的貯蓄問題において市場の曖昧情報が長期的に市場価格へどのような影響を及ぼすか、さらに経済主体が市場価格を通じて曖昧情報をいかに抽出するかに関する基礎的研究を行った。個人選好の確率分布に関してナイト的不確実性が存在する社会選択問題において、選択肢集合の確率分布が分からない状況でいかなる確率分布の下でも事前パレート効率性が損なわれない社会的選択は，ハルサニ型社会厚生関数を最大にするものであることを示した。「契約、交渉および組織のゲーム分析」の研究では、多市場接触の繰り返しゲームの不完全公的観測モデルについて、市場数の増加がカルテルに与える影響の評価に有効な命題を証明した。不完全私的観測モデルについて操作性を担保した解概念を提唱し、多市場接触効果の検証と最大限可能な結託レベルの導出を行った。「社会選択論と制度形成」の研究では、社会的義務感や公平性に関わるモラル、人口規模や選好の異なるグループの存在を許す社会選択理論の統一的な理論的枠組みを構築し、社会的協力の評価基準の公理的特徴づけを行った。曖昧情報下での意思決定理論の視点から国際紛争危機交渉ゲームを分析し、従来の期待効用理論による分析と異なり、国家が戦争に勝利する確率に関してより悲観的になるにつれて戦争の発生確率が減少することを示した。
得られた成果を研究論文にとりまとめ、国内外の研究者と研究討議を実施するとともに、研究成果を総括するためにゲーム理論ワークショップを平成30年3月2-4日に大阪経済大学で開催した。

Research Progress Status

翌年度、交付申請を辞退するため、記入しない。

Strategy for Future Research Activity

翌年度、交付申請を辞退するため、記入しない。

Research Products

• [Int'l Joint Research] Cardiff Metropolitan University(英国)
• [Int'l Joint Research] University of Cambridge(英国)
• [Int'l Joint Research] Singapore Management University(シンガポール)
• [Int'l Joint Research] Bar-Ilan University(イスラエル)
• [Int'l Joint Research] Ben-Gurion University/Bar-Ilan University(イスラエル)
• [Int'l Joint Research] Lingnan University(香港)
• [Int'l Joint Research] Singapore Management University(シンガポール)
• [Int'l Joint Research] University of Cambridge(英国)
• [Int'l Joint Research] Ben-Gurion University(イスラエル)
• [Int'l Joint Research] Lingnan University(香港)
• [Int'l Joint Research] Singapore management University(シンガポール)
• [Int'l Joint Research] European University Institute (イタリア)
• [Int'l Joint Research] University of Cambridge(英国)
• [Int'l Joint Research]
• [Journal Article] Incomplete Contract and Verifiability (2018)
  • Author(s): Akira Okada
  • Journal Title: KIER Discussion Paper Volume: 982 Pages: 1-24
• [Journal Article] Non-cooperative Bargaining for Side Payments Contract (2018)
  • Author(s): Akira Okada
  • Journal Title: KIER Discussion Paper Volume: 983 Pages: 1-50
• [Journal Article] Favorite-Longshot Bias in Parimutuel Betting: an Evolutionary Explanation (2017)
  • Author(s): Atsushi Kajii and Takahiro Watanabe
  • Journal Title: Journal of Economic Behavior and Organization Volume: 149 Pages: 56-69
  • DOI: 10.1016/j.jebo.2017.05.001
  • Peer Reviewed
• [Journal Article] A Non-cooperative Bargaining Theory with Incomplete Information: Verifiable Types (2016)
  • Author(s): Akira Okada
  • Journal Title: Journal of Economic Theory Volume: 163 Pages: 318-341
  • DOI: 10.1016/j.jet.2016.02.002
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Approximate Robustness of Equilibrium to Incomplete Information (2016)
  • Author(s): Ori Haimanko and Atsushi Kajii
  • Journal Title: International Journal of Game Theory Volume: 45 Issue: 4 Pages: 839-857
  • DOI: 10.1007/s00182-015-0488-4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Optimal Sharing Rules in Repeated Partnerships (2016)
  • Author(s): Hajime Kobayashi, Katsunori Ohta, Tadashi Sekiguchi
  • Journal Title: Journal of Economic Theory Volume: 166 Pages: 311-323
  • DOI: 10.1016/j.jet.2016.09.004
  • Peer Reviewed / Open Access
• [Journal Article] Bayesian Nash equilibrium and variational inequalities (2016)
  • Author(s): Takashi Ui
  • Journal Title: Journal of Mathematical Economics Volume: 63 Pages: 139-146
  • DOI: 10.1016/j.jmateco.2016.02.004
  • NAID: 120006927605
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Constrained Inefficiency and Optimal Taxation with Uninsurable Risks (2016)
  • Author(s): Piero Gottardi, Atsushi Kajii and Tomoyuki Nakajima
  • Journal Title: Journal of Public Economic Theory Volume: 18 Pages: 1-28
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Cooperation and Institution in Games (2015)
  • Author(s): Akira Okada
  • Journal Title: Japanese Economic Review Volume: 66 Pages: 1-32
  • Peer Reviewed
• [Journal Article] Optimal taxation and debt with uninsurable risks to human capital accumulation (2015)
  • Author(s): Piero Gottardi, Atsushi Kajii, and Tomoyuki Nakajima
  • Journal Title: American Economic Review Volume: 105 Issue: 11 Pages: 3443-3470
  • DOI: 10.1257/aer.20110576
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Multimarket Contact under Demand Fluctuations (2015)
  • Author(s): Tadashi Sekiguchi
  • Journal Title: International Journal of Game Theory Volume: 印刷中 Issue: 4 Pages: 1033-1048
  • DOI: 10.1007/s00182-015-0464-z
  • NAID: 120005712945
  • Peer Reviewed / Open Access
• [Journal Article] The Formation and Long-run Stability of Cooperative Groups in a Social Dilemma Situation (2015)
  • Author(s): Akira Okada, Toshimasa Maruta
  • Journal Title: International Journal of Economic Theory Volume: 11 Issue: 1 Pages: 121-135
  • DOI: 10.1111/ijet.12056
  • Peer Reviewed
• [Journal Article] The Stationary Equilibrium of Three-Person Coalitional Bargaining Games with Random Proposers: A Classification (2014)
  • Author(s): Akira Okada
  • Journal Title: International Journal of Game Theory Volume: 43 Issue: 4 Pages: 953-973
  • DOI: 10.1007/s00182-014-0413-2
  • Peer Reviewed
• [Journal Article] Favorite-Longshot Bias in Parimutuel Betting: an Evolutionary Explanation (2014)
  • Author(s): Atsushi Kajii and Takahiro Watanabe
  • Journal Title: KIER Working Paper Volume: 907 Pages: 1-24
  • Open Access
• [Journal Article] The social value of public information with convex costs of information acquisition (2014)
  • Author(s): Takashi Ui
  • Journal Title: Economics Letters Volume: 125 Issue: 2 Pages: 249-252
  • DOI: 10.1016/j.econlet.2014.09.015
  • NAID: 120006928032
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Robust Voting under Uncertainty (2017)
  • Author(s): Takashi Ui
  • Organizer: Workshop on Decision Making and Contest Theory
  • Place of Presentation: Ein Gedi (Israel)
  • Year and Date: 2017-01-25
  • Int'l Joint Research
• [Presentation] Multimarket Contact under Imperfect Observability and Impatience (2017)
  • Author(s): Tadashi Sekiguchi
  • Organizer: The 28th International Conference on Game Theory
  • Int'l Joint Research
• [Presentation] Multimarket Contact under Imperfect Observability and Impatience (2017)
  • Author(s): Tadashi Sekiguchi
  • Organizer: The 70th European Meeting of the Econometric Society
  • Int'l Joint Research
• [Presentation] Multimarket Contact under Imperfect Observability and Impatience (2017)
  • Author(s): Tadashi Sekiguchi
  • Organizer: The 10th Pan Pacific Game Theory Conference
  • Int'l Joint Research / Invited
• [Presentation] Robust Voting under Uncertainty (2017)
  • Author(s): Takashi Ui
  • Organizer: Risk, Uncertainty and Decision Conference 2017
  • Int'l Joint Research
• [Presentation] Robust Voting under Uncertainty (2017)
  • Author(s): Takashi Ui
  • Organizer: The 70th European Meeting of the Econometric Society
  • Int'l Joint Research
• [Presentation] 情報設計問題とLQG ゲーム (2017)
  • Author(s): 宇井貴志
  • Organizer: 日本経済学会 2017 年度秋季大会
  • Invited
• [Presentation] Repeated Games with Recursive Utility: Cournot Duopoly under Gain/Loss Asymmetry (2016)
  • Author(s): Tadashi Sekiguchi
  • Organizer: UECE Lisbon Meetings
  • Place of Presentation: Lisbon School of Economics and Management
  • Year and Date: 2016-11-03
  • Int'l Joint Research
• [Presentation] Strategic Ambiguity and Information (2016)
  • Author(s): Atsushi Kajii
  • Organizer: Summer School of the Econometric Society
  • Place of Presentation: 京都大学経済研究所
  • Year and Date: 2016-08-06
  • Int'l Joint Research / Invited
• [Presentation] Ambiguity and Risk in Global Games (2016)
  • Author(s): Takashi Ui
  • Organizer: Games 2016
  • Place of Presentation: University of Maastricht
  • Year and Date: 2016-07-24
  • Int'l Joint Research
• [Presentation] Multimarket Contact under Imperfect Observability and Impatience (2016)
  • Author(s): Tadashi Sekiguchi
  • Organizer: Annual Conference of the Canadian Economics Association
  • Place of Presentation: University of Ottawa
  • Year and Date: 2016-06-04
  • Int'l Joint Research
• [Presentation] Repeated Games With Recursive Utility: Cournot Duopoly Under (2015)
  • Author(s): Tadashi Sekiguchi
  • Organizer: The 11th World Congress of the Econometric
  • Place of Presentation: Montreal Convention Center（カナダ）
  • Year and Date: 2015-08-18
• [Presentation] Repeated Games with Automatic and Optional Monitoring (2015)
  • Author(s): Tadashi Sekiguchi
  • Organizer: SING11-GTM2015
  • Place of Presentation: St. Petersburg University (ロシア)
  • Year and Date: 2015-07-10
• [Presentation] Approximate robustness of equilibrium to incomplete information (2015)
  • Author(s): Atsushi Kajii
  • Organizer: The 6th Shanghai Microeconomics Workshop
  • Place of Presentation: 上海財経大学（中国）
  • Year and Date: 2015-06-13
• [Presentation] Finitely Repeated Games with Automatic and Optional Monitoring (2014)
  • Author(s): Tadashi Sekiguchi
  • Organizer: UECE Lisbon Meetings 2014
  • Place of Presentation: Lisboa School of Economics and Management（ポルトガル）
  • Year and Date: 2014-11-08
• [Presentation] Cooperation and Institution in Games (2014)
  • Author(s): 岡田 章
  • Organizer: 日本経済学会秋季大会会長講演
  • Place of Presentation: 西南学院大学
  • Year and Date: 2014-10-12
  • Invited
• [Presentation] Welfare Effects of Information Acquisition Costs (2014)
  • Author(s): Takashi Ui
  • Organizer: EEA-ESEM
  • Place of Presentation: Toulouse School of Economics, Toulouse (フランス)
  • Year and Date: 2014-08-25
• [Presentation] Baseline setting problems of the offset mechanisms in the international scheme for climate change (2014)
  • Author(s): Haruo Imai
  • Organizer: 20th Conference of the International Federation of Operational Research Societies
  • Place of Presentation: バルセロナコンベンションセンター、バルセロナ（スペイン）
  • Year and Date: 2014-07-14
• [Presentation] Inefficiency in a Multi-stage Bargaining Problem (2014)
  • Author(s): Haruo Imai
  • Organizer: Sixteenth International Symposium on Dynamic Games and Applications
  • Place of Presentation: アムステルダム大学、アムステルダム(オランダ)
  • Year and Date: 2014-07-11
• [Presentation] Repeated Games with Recursive Utility: Cournot Duopoly under Gain/Loss Asymmetry (2014)
  • Author(s): Tadashi Sekiguchi
  • Organizer: 25th International Conference on Game Theory
  • Place of Presentation: ニューヨーク州立大学（米国）
  • Year and Date: 2014-07-10
  • Invited
• [Presentation] Approximate robustness of equilibrium to incomplete information (2014)
  • Author(s): Atsushi Kajii
  • Organizer: Asian Meeting of Econometric Society
  • Place of Presentation: Academia Sinica, Taiwan
  • Year and Date: 2014-06-21
• [Presentation] Pricing of Durable Network Goods under Dynamic Coordination Failure (2014)
  • Author(s): Tadashi Sekiguchi
  • Organizer: The 2014 North American Summer Meeting of the Econometric Society
  • Place of Presentation: ミネソタ大学（米国）
  • Year and Date: 2014-06-20
• [Presentation] Offset Mechanisms for Energy Related Projects and Baseline Setting Methods (2014)
  • Author(s): Haruo Imai
  • Organizer: International Congress on Economics, Finance and Energy-I
  • Place of Presentation: カザフスタンホテル、アルマティ(カザフスタン)
  • Year and Date: 2014-06-12
• [Book] 組織と制度のミクロ経済学 (2015)
  • Author(s): 今井晴雄、秋田次郎、新澤秀則、堀一三、国本隆、渡邊直樹、石井良輔、石黒真吾、下村研一、花木伸行、中嶋亮
  • Total Pages: 29
  • Publisher: 京都大学学術出版会
• [Remarks] 科研費基盤Ａ「ゲーム理論の新展開：協力メカニズムの解明」
  • URL: http://www.1234.kier.kyoto-u.ac.jp/kaken2014_2/kaken2014.html
• [Funded Workshop] Summer School of the Econometric Society (2016)
  • Place of Presentation: 京都大学経済研究所
  • Year and Date: 2016-08-06