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An extension to multi-fused criterion for Renyi divergence and its application to apportionment

Research Project

Project/Area Number 18K03413
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 12040:Applied mathematics and statistics-related
Research InstitutionOsaka University

Principal Investigator

Hamada Etsuo  大阪大学, 基礎工学研究科, 特任教授(常勤) (20273617)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsダイバージェンス / モデル評価基準 / ロバストネス / 多層融合化 / ロバスト / 因果性 / 指数型分布族 / モデル評価規準 / レニー・ダイバージェンス / 多層融合化規準 / 議員定数問題
Outline of Final Research Achievements

In response to this research, we derived a divergence family of criteria that generalizes AIC by a robust generalization of the model selection criterion family, showed that this family is asymptotically equivalent to AIC in polynomial regression models, and further showed that it performs well even in the presence of outliers. Based on these results, we proposed a new information criterion, RCC, which is based on the influence function, as a robust information criterion for analyzing data with outliers using polynomial regression models, and which has both the consistency corresponding to BIC and the robustness corresponding to BHHJ.

Academic Significance and Societal Importance of the Research Achievements

モデル選択基準族において、外れ値を持つデータに対しても十分有効なパフォーマンスを発揮する情報量規準の提案が望まれていたが、この研究成果では多項式回帰モデルという制限下ではあるが、一致性と頑健性を併せ持つ新しい情報量規準 RCC を提案することが出来たのは、大きな学術的意義を持つと同時に、データサイエンスの現場での応用可能という意味で社会的意義を持つといえる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (1 results)

  • [Journal Article] Determination of the Optimal Number of Strata for Propensity Score Subclassification2021

    • Author(s)
      S. Orihara and E. Hamada
    • Journal Title

      Statistics \& Probability Letters

      Volume: 168

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 日本での COVID-19 禍における PCR 陽性者数と感染死亡者数の Granger 因果性の検討2021

    • Author(s)
      濵田悦生
    • Journal Title

      行動計量学

      Volume: 48 Pages: 39-48

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the consistency and the robustness in model selection criteria2020

    • Author(s)
      S. Kurata and E. Hamada
    • Journal Title

      Communications in Statistics --Theory and Methods

      Volume: 49 Issue: 21 Pages: 5175-5195

    • DOI

      10.1080/03610926.2019.1615093

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Presentation] On a refinement of Hoeffding's inequality2020

    • Author(s)
      濵田悦生
    • Organizer
      統計関連学会連合大会
    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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