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Statistical Sequential Testing and Change-point Detection on Nonstationarity

Research Project

Project/Area Number 24530226
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Economic statistics
Research InstitutionYokohama National University

Principal Investigator

NAGAI KEIJI  横浜国立大学, 国際社会科学研究院, 教授 (50311866)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords自己回帰過程 / 分枝過程 / 統計的逐次探索 / 変化点問題 / 停止時刻 / 統計的意思決定論 / 局所漸近正規 / 局所漸近最適性 / 統計的逐次解析 / 停止時刻による統計解析 / 非定常時系列 / 分枝過程の臨界性 / 変化点探索 / 確率解析の応用 / 単位根検定 / 時間変更 / ベッセル過程 / 国際情報交換
Outline of Final Research Achievements

In this research, assuming online observations of stochastic sequence, I established a sequential testing procedure for the detection of the existence of non-stationary state such as bubble in financial time series and a sequential change-point detection procedure for the detection of the change in a parameter in financial time series. I also developed a sequential testing procedure and a sequential change-point detection for the criticality of branching process, which is important in epidemiology and population statistics. In each case, some mathematical optimality and a method for numerical computation are developed.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (3 results)

All 2014 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (1 results) (of which Invited: 1 results)

  • [Journal Article] Sequential unit root test for AR(p) process2014

    • Author(s)
      K.Nagai and Y, Xu
    • Journal Title

      横浜国立大学国際 社会科学研究科, 博士(経済学)学位論文, Xu Yun (許贇)

      Volume: 国社博甲第245 号 Pages: 36-50

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Sequential multiple unit root test for AR(p) process2014

    • Author(s)
      Y. Xu and K.Nagai
    • Journal Title

      横浜国立大学国際 社会科学研究科, 博士(経済学)学位論文, Xu Yun (許贇)

      Volume: 国社博甲第245 号 Pages: 51-61

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Nonparametric Estimation for Quadratic Covariation of Two-dimensional Diffusion under Nonsychronous High Frequency Observations

    • Author(s)
      Keiji Nagai
    • Organizer
      Institute of Mathematical Statistics, Asia Pacific Rim Meeting
    • Place of Presentation
      Tsukuba, Japan
    • Related Report
      2012 Research-status Report
    • Invited

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Published: 2013-05-31   Modified: 2019-07-29  

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