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2019 Fiscal Year Annual Research Report

Levy過程の変動理論の発展と応用への展開

Research Project

Project/Area Number 18J12680
Research InstitutionOsaka University

Principal Investigator

野場 啓  大阪大学, 基礎工学研究科, 助教

Project Period (FY) 2018-04-25 – 2020-03-31
KeywordsLevy過程 / 確率制御
Outline of Annual Research Achievements

2018年度に行った, Jose-Luis Perez氏(CIMAT)およびXiang Yu 氏(Hong Kong Polytechnic University)と行った正のジャンプを持たないMarkov加法過程に対する最適配当問題の論文が国際誌に採択された. また, 両側にジャンプを持つ Levy過程に対する最適配当問題を, 特定場合について解決した. この結果についてはすでに論文にまとめて投稿した後, 国際誌に採択された. この研究で用いられた手法は様々なLevy過程を用いた確率制御の研究に応用可能であるため, 非常に有用な結果が得られたと考えている. 上記の研究と同様の手法を用いて, 山崎和俊氏(関西大学)とともに, 両側にジャンプを持つ Levy過程に対する在庫制御問題を, 特定の場合について解決した. この結果についてはすでに論文にまとめて国際誌に投稿中である. さらに同様の手法を用いて, Zbigniew Palmowski氏(Wroclaw University of Science and Technology)および山崎和俊氏とともに, 破産を持つケースの両側にジャンプを持つ Levy過程に対する最適配当問題を, 特定場合について解決した. この結果については現在投稿準備中である. そのほかにも, Poisson的配当に制限した場合における両側にジャンプを持つ Levy過程に対する最適配当問題や, 両側にジャンプを持つMarkov加法過程に対する最適配当問題について, Jose-Luis Perez氏および山崎和俊氏と共同研究を行い, いくつかの進展を見せている.
Juan-Carlos Pardo氏(CIMAT), Jose-Luis Perez氏, Henry Panti氏(UADY)とともに, 正の跳びを持たない標準過程の条件付けの研究も行い, いくつかの進展を見せている.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (27 results)

All 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (19 results) (of which Int'l Joint Research: 7 results,  Invited: 8 results)

  • [Int'l Joint Research] CIMAT/UADY(メキシコ)

    • Country Name
      MEXICO
    • Counterpart Institution
      CIMAT/UADY
  • [Int'l Joint Research] Wroclaw University of Sci. and Tech.(ポーランド)

    • Country Name
      POLAND
    • Counterpart Institution
      Wroclaw University of Sci. and Tech.
  • [Int'l Joint Research] The Hong Kong Polytechnic University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      The Hong Kong Polytechnic University
  • [Journal Article] On the optimality of double barrier strategies for L?vy processes2021

    • Author(s)
      Noba Kei
    • Journal Title

      Stochastic Processes and their Applications

      Volume: 131 Pages: 73~102

    • DOI

      10.1016/j.spa.2020.08.008

    • Peer Reviewed
  • [Journal Article] Generalized scale functions of standard processes with no positive jumps2020

    • Author(s)
      Noba Kei
    • Journal Title

      Electronic Communications in Probability

      Volume: 25 Pages: 1~12

    • DOI

      10.1214/20-ecp289

    • Peer Reviewed / Open Access
  • [Journal Article] On the Bailout Dividend Problem for Spectrally Negative Markov Additive Models2020

    • Author(s)
      Noba Kei、Perez Jose-Luis、Yu Xiang
    • Journal Title

      SIAM Journal on Control and Optimization

      Volume: 58 Pages: 1049~1076

    • DOI

      10.1137/19m1298172

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generalized refracted L?vy process and its application to exit problem2019

    • Author(s)
      Noba Kei、Yano Kouji
    • Journal Title

      Stochastic Processes and their Applications

      Volume: 129 Pages: 1697~1725

    • DOI

      10.1016/j.spa.2018.06.004

    • Peer Reviewed
  • [Journal Article] Approximation and Duality Problems of Refracted Processes2019

    • Author(s)
      Noba Kei
    • Journal Title

      Potential Analysis

      Volume: 53 Pages: 591~612

    • DOI

      10.1007/s11118-019-09779-7

    • Peer Reviewed
  • [Presentation] On the optimality of double barrier strategies for Levy processes2020

    • Author(s)
      K. Noba
    • Organizer
      Seminario de Probabilidad
    • Int'l Joint Research / Invited
  • [Presentation] Inventory control for Levy processes2020

    • Author(s)
      K. Noba
    • Organizer
      Seminario de Probabilidad
    • Int'l Joint Research / Invited
  • [Presentation] On singular control for Levy processes2020

    • Author(s)
      野場啓
    • Organizer
      Levy seminar
  • [Presentation] On singular control for Levy processes2020

    • Author(s)
      野場啓
    • Organizer
      待ち行列研究部会第 290 回部会
  • [Presentation] On singular control for Levy processes2020

    • Author(s)
      野場啓
    • Organizer
      確率解析とその周辺
  • [Presentation] On the optimality of doubly barrier strategies for Levy processes2020

    • Author(s)
      野場啓
    • Organizer
      無限分解可能過程に関連する諸問題
  • [Presentation] On singular control for Levy processes2020

    • Author(s)
      野場啓
    • Organizer
      確率論シンポジウム
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      K. Noba
    • Organizer
      9th International Conference on Levy Processes
    • Int'l Joint Research
  • [Presentation] On the bail-out dividend problem for spectrally neg- ative Markov additive models2019

    • Author(s)
      K. Noba
    • Organizer
      he 7rth Asian Quantitative Finance Conference
    • Int'l Joint Research
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      K. Noba
    • Organizer
      Interactions between commutative and non-commutative probability
    • Int'l Joint Research / Invited
  • [Presentation] On the optimality of double barrier strategies for Levy processes2019

    • Author(s)
      K. Noba
    • Organizer
      International Workshop on Stochastic Analysis and Applications
    • Int'l Joint Research / Invited
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      K. Noba
    • Organizer
      CLAPEM 2019
    • Int'l Joint Research / Invited
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      野場啓
    • Organizer
      確率論ヤングサマーセミナー
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      野場啓
    • Organizer
      日本数学会・2019 年度秋季総合分科会
  • [Presentation] On the optimality of doubly barrier strategies for Levy processes2019

    • Author(s)
      野場啓
    • Organizer
      大阪大学確率論セミナー
    • Invited
  • [Presentation] On the optimality of doubly barrier strategies for Levy processes2019

    • Author(s)
      野場啓
    • Organizer
      無限分 解可能過程に関連する諸問題
  • [Presentation] On the optimality of doubly barrier strategies for Levy processes2019

    • Author(s)
      野場啓
    • Organizer
      東京確率論セミナー
    • Invited
  • [Presentation] On the bail-out dividend problem for spectrally negative Markov additive models2019

    • Author(s)
      野場啓
    • Organizer
      霧島確率論セミナー
    • Invited
  • [Presentation] On the optimality of doubly barrier strategies for Levy processes2019

    • Author(s)
      野場啓
    • Organizer
      確率論シンポジウム

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Published: 2021-12-27  

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