Name / Position

OKUI, Ryo / Professor


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Curriculum Vitae


1998Kyoto University, Bachelor in Economics
2000Kyoto University, Master in Economics
2005University of Pennsylvania, PhD in Economics

Professional Experience

2005Hong Kong University of Science and Technology, Assistant Professor
2009Kyoto University, Associate Professor
2017NYU Shanghai, Associate Professor
2019Seoul National University, Associate Professor
2022University of Tokyo, Professor

Research Field

Econometrics, Experimental Economics

Research Theme

My research interest is panel data analysis. I am interested in statistical methods to understand heterogeneity across economic units using panel data. I study statistical methods to obtain the distribution of characteristics across units in panel data, and procedures to cluster units according to the value of characteristics. I am currently working on methods to investigate time-varying heterogeneity, the development of inference methods, and the comparison across different statistical methods. I also conduct economic experiments and applied research.


Articles - Representative academic articles

  • Lumsdaine, Robin L., Ryo Okui & Wendun Wang: “Estimation of Panel Group Structure Models with Structural Breaks in Group Memberships and Coefficients,”  Journal of Econometrics, forthcoming
  • Okui, Ryo & Wendun Wang: “Heterogeneous Structural Breaks in Panel Data Models,” Journal of Econometrics, (2021), 220: 447-473, DOI:10.1016/j.jeconom.2020.04.009
  • Okui, Ryo & Takahide Yanagi: “Panel Data Analysis with Heterogeneous Dynamics,” Journal of Econometrics, (2019), 212(2): 451–475, DOI:10.1016/j.jeconom.2019.04.036
  • Hossain, Tanjim & Ryo Okui: “The Binarized Scoring Rule,” Review of Economic Studies (2013), 80(3):984-1001, DOI:10.1093/restud/rdt006
  • Kuersteiner, Guido & Ryo Okui: “Constructing Optimal Instruments by First Stage Prediction Averaging,” Econometrica (2010), 78(2):697-718, DOI: 10.3982/ECTA7444

Books and Monographs

  • Nishiyama, Yoshihiko, Mototsugu Shintani, Daiji Kawaguchi, & Ryo Okui: “Econometrics: Statistical Data Analysis for Empirical Economics,” Yuhikaku, 2019, in Japanese

Other Professional Activities and Awards

Other Professional Activities and Services

  • Japanese Economic Association, Japan Statistical Society, Econometric Society


  • 2010, JSS Ogawa Award, Japan Statistical Society
  • 2020, Nakahara Prize, Japanese Economic Association