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2019 Fiscal Year Research-status Report

Model Averaging for Ultra-High Dimensional Data: Theory, Methods, and Applications

Research Project

Project/Area Number 19K01582
Research InstitutionOtaru University of Commerce

Principal Investigator

劉 慶豊  小樽商科大学, 商学部, 教授 (60378958)

Project Period (FY) 2019-04-01 – 2022-03-31
KeywordsModel Averaging / Model Selection / Sparsity / Lasso / Combination
Outline of Annual Research Achievements

計量経済モデルの推定の精度を高める方法としてモデル平均法が注目されている。今年度は多方面にわたってモデル平均法の研究を行なった。異なる推定法をベースにしたモデル平均法,非線形モデルの平均法とボラティリティモデルの平均法を構築した。さらに、モデル平均法のLASSO表現を提案し、そのウエイトのスパース性を示した上で、モデル平均法を高次元データに適用するための高速アルゴリズムを開発した。業績として以下の論文を学術誌に掲載した。
Feng, Y., Liu, Q., Okui, R. (2020). On the sparsity of Mallows model averaging estimator. Economics Letters, 187, 108916.
Liu, Q, Yao, Q, Zhao, G. Model averaging estimation for conditional volatility models with an application to stock market volatility forecast. Journal of Forecasting. 2020; 1– 23.
Liu, Q.; Vasnev, A.L. A Combination Method for Averaging OLS and GLS Estimators. Econometrics 2019, 7, 38.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

サバティカル期間中で研究が順調に進んで、研究成果を3本の論文にまとめ、学術誌に掲載した。

Strategy for Future Research Activity

基本的には計画通り研究を進めていくが、Machine Learningのアイディアを取り入れて、モデル平均法の新しい発展の可能性を探っていく。さらににEnsemble Learningとの共通性に視点を置き、モデル平均法の成果をMachine Learningの分野へ広げていく。

Causes of Carryover

計算用コンピューター、書籍などの購入や学会参加への必要になります。

  • Research Products

    (6 results)

All 2020 2019 Other

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] On the sparsity of Mallows model averaging estimator2020

    • Author(s)
      Feng Yang、Liu Qingfeng、Okui Ryo
    • Journal Title

      Economics Letters

      Volume: 187 Pages: 108916~108916

    • DOI

      10.1016/j.econlet.2019.108916

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Model averaging estimation for conditional volatility models with an application to stock market volatility forecast2020

    • Author(s)
      Liu Qingfeng、Yao Qingsong、Zhao Guoqing
    • Journal Title

      Journal of Forecasting

      Volume: Online First Pages: 1-23

    • DOI

      10.1002/for.2659

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Combination Method for Averaging OLS and GLS Estimators2019

    • Author(s)
      Liu Qingfeng、Vasnev Andrey L.
    • Journal Title

      Econometrics

      Volume: 7 Pages: 38~38

    • DOI

      10.3390/econometrics7030038

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] On the Sparsity of Mallows Model Averaging Estimator2019

    • Author(s)
      劉慶豊
    • Organizer
      The 2019 International Symposium of Quantitative Economics
    • Int'l Joint Research / Invited
  • [Presentation] Model Averaging for Nonlinear Regression Models2019

    • Author(s)
      劉慶豊
    • Organizer
      The 2019 ICSA China Conference
    • Int'l Joint Research / Invited
  • [Remarks] Selected Publications

    • URL

      https://www.otaru-uc.ac.jp/~qliu/publication.html

URL: 

Published: 2021-01-27  

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