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Game theoretical problems in mathematical models for finance

Research Project

Project/Area Number 16K05284
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Foundations of mathematics/Applied mathematics
Research InstitutionKansai University

Principal Investigator

Nagai Hideo  関西大学, システム理工学部, 教授 (70110848)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsダウンサイドリスク最小化 / モデルの不確かさ / 最適消費・投資 / HJB 方程式 / 大偏差確率制御 / HJB-I 方程式 / リスク最小化 / ゲーム論的アプローチ / 有効領域 / ベンチマーク / 大偏差確率 / 確率微分ゲーム / リスク鋭感的確率制御 / 漸近的最適戦略 / 双対性定理 / リスク鋭感的微分ゲーム / レート関数 / 数理ファイナンス / ポートフォリオ最適化 / HJB方程式 / 非完備市場
Outline of Final Research Achievements

In mathematical modelling of financial problems, we often wonder whether the model set up is correctly representing the actual financial phenomena or not. In this study, we formulate the problems of down-side risk minimization under model uncertainty as certain kinds of stochastic differential games by parameterizing the extent of uncertainty. Then, in the analysis of the problems set up as above
we encounter the situation such that the game theoretical consideration work well and performed such analysis. It is also the case in studying the optimal investment and consumption problems.

Academic Significance and Societal Importance of the Research Achievements

保有総資産がベンチマークを下回る確率を時間大域的に最小化する問題を定式化するにあたって、ベンチマークを確率過程として定式化したことは、現実のファイナンスモデルが持つ問題をよく反映したものであり、さらに、モデルの不確かさを容認した設定で考察したことは、応用に良く貢献すると思われる。また、モデル化された問題の解析に当たっては、数学解析の上でも、大偏差理論を、大偏差確率制御理論として発展させるという、理論的な貢献も評価されうるものと思われる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (15 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (10 results) (of which Int'l Joint Research: 8 results,  Invited: 8 results) Funded Workshop (3 results)

  • [Journal Article] Risk-Sensitive Stochastic Control2019

    • Author(s)
      Hideo Nagai
    • Journal Title

      Encyclopedia of Systems and Control

      Volume: 2 Pages: 1-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An optimal consumption problem for general factor models2018

    • Author(s)
      Hiroaki Hata, Hideo Nagai and Shuenn-jyi Sheu
    • Journal Title

      SIAM Journal on Control and Optimization

      Volume: 56 Issue: 5 Pages: 3149-3183

    • DOI

      10.1137/17m1135864

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Large deviation control under model uncertainty2019

    • Author(s)
      Hideo Nagai
    • Organizer
      SIAM Conference on Control and Applications
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Structure of HJB equations ruling over large deviation control2019

    • Author(s)
      HIdeo Nagai
    • Organizer
      Probability, Uncertainty and Quantitative Risk
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Large deviation control and an optimal investment model2018

    • Author(s)
      Hideo NAGAI
    • Organizer
      IMA workshop on stochastic control, computational methods and applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Ergodic Control, Risk-sensitive Control and Large deviation Control2018

    • Author(s)
      Hideo NAGAI
    • Organizer
      Workshop on Stochastic in Honor of Professor Shuenn-jyi Sheu
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Large deviation control and the effective domains of the rate functions2018

    • Author(s)
      Hideo NAGAI
    • Organizer
      International Conference on Mathematical Finance and Symposium on the Role of Mathematical Finance on Fin. Tech Business
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Large deviation control for quadratic semi-martingale functional2017

    • Author(s)
      長井 英生
    • Organizer
      2017年日本数学会年会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2017-03-24
    • Related Report
      2016 Research-status Report
  • [Presentation] Large deviation control under model uncertainty2017

    • Author(s)
      長井 英生
    • Organizer
      2017年日本数学会年会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2017-03-24
    • Related Report
      2016 Research-status Report
  • [Presentation] Downside risk minimization against a benchmark2017

    • Author(s)
      Nagai, Hideo
    • Organizer
      5-th Asian Quantitative Finance Conference at Seoul, Korea
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Large deviation control arising from downside risk minimization against a benchmark,2017

    • Author(s)
      Nagai, Hideo
    • Organizer
      Stochastic Analysis and its Applications, at Bedlewo, Poland
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Large deviation control arising from risk minimization2016

    • Author(s)
      HIdeo Nagai
    • Organizer
      Workshop on Stochastic Analysis and Financial Mathematics
    • Place of Presentation
      Shandong University of Science and Technology、Qingdao(China)
    • Year and Date
      2016-08-30
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] Stochastic Processes and related topics2019

    • Related Report
      2018 Research-status Report
  • [Funded Workshop] Workshop on stochastic control and related issues, at Kansai Univ.2018

    • Related Report
      2017 Research-status Report
  • [Funded Workshop] Workshop on "Mathematical Finance and Related Issues", at Nakanoshjima Center2018

    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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