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Machine learning approach to the estimation of spillover effects and their structural changes

Research Project

Project/Area Number 22K20154
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0107:Economics, business administration, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Okui Ryo  東京大学, 大学院経済学研究科(経済学部), 教授 (20563480)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsパネルデータ / 波及効果 / 連関構造 / 機械学習 / 構造変化
Outline of Research at the Start

本研究課題は、パネルデータを用いて経済主体間の波及効果とその連関構造がどのように変化し ているかを捕捉する計量経済学の手法の開発を目的とする。どの経済主体がどの経済主体に影響をあたえるのかという波及効果の連関構造が未知であり、さらにそれらが未知の構造変化点において変化する状況を考える。波及効果とその連関構造そして構造変化点を推定する手法を機械学習の手法を発展させることで開発し、漸近理論とシミュレーションによって、その性質を調べる。

Outline of Final Research Achievements

In this research project, we developed an econometric method for panel data to estimate spillover effects among economic units and the evolution of their interconnections. Our approach addresses scenarios where the linkage structure of spillover, that is, the specific interactions among agents, is not pre-specified, and these interactions may change at an unknown point of structural change. To address these issues, we devised a novel method based on machine learning techniques to estimate spillover effects, their network structures, and the structural change point. We analyzed the performance of our method through asymptotic theory and extensive simulations. Additionally, this project has advanced the theoretical framework necessary to integrate panel data analysis with machine learning.

Academic Significance and Societal Importance of the Research Achievements

経済主体間の波及効果とその連関構造がどのように変化しているかを捕捉することは、学術的にも政策上も重要な問題である。例えば、研究開発の国際的な影響を調べることは、どのような国の研究開発から日本が影響を受けており、またどのような国に影響を与えているか明確にし、政策上も有用な情報を提供する。さらに、そのような連関構造は時間を通じて変化する可能性が高く、構造変化を捉える必要もある。この研究では、連関構造とその構造変化をデータから捉えるための計量経済学の手法を開発した。さらに、手法の開発のために、計量経済学と機械学習の両者にまたがる統計理論の発展を行った。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 Other

All Int'l Joint Research (8 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] Erasmum University of Rotterdam(オランダ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 東北財経大学(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Kansas State University/University of Wisconsin, Madison(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Gothenberg(スウェーデン)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Erasmum University of Rotterdam(オランダ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 東北財経大学(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Kansas State University(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Seoul National University(韓国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Confidence Set for Group Membership2024

    • Author(s)
      Andreas Dzemski and Ryo Okui
    • Journal Title

      Quantitative Economics

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] DETECTING STRUCTURAL BREAKS IN SPATIAL PANEL DATA MODELS WITH UNKNOWN NETWORKS2023

    • Author(s)
      Ryo Okui
    • Organizer
      Asian Meeting of the Econometric Society in East and South-East Asia
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] DETECTING STRUCTURAL BREAKS IN SPATIAL PANEL DATA MODELS WITH UNKNOWN NETWORKS2023

    • Author(s)
      Ryo Okui
    • Organizer
      The 9th Annual Conference of the International Association for Applied Econometrics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Latent group structure in linear panel data models with endogenous regressor2023

    • Author(s)
      Ryo Okui
    • Organizer
      Japanese Economic Association
    • Related Report
      2023 Annual Research Report
  • [Presentation] Instrumental Variables Estimation for Infinite Order Panel Autoregressive Processes2023

    • Author(s)
      Ryo Okui
    • Organizer
      The 28th International Panel Data Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RECOVERING LATENT LINKAGE STRUCTURES AND SPILLOVER EFFECTS WITH STRUCTURAL BREAKS IN PANEL DATA MODELS2023

    • Author(s)
      Ryo Okui
    • Organizer
      The 17th International Symposium on Econometric Theory and Applications
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Recovering latent linkage structures and spillover effects with structural breaks in panel data models2023

    • Author(s)
      奥井亮
    • Organizer
      関西計量経済学研究会
    • Related Report
      2022 Research-status Report

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Published: 2022-09-01   Modified: 2025-01-30  

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