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Large-Scale Generalized Linear Models for Longitudinal Data with Grouped Patterns of Unobserved Heterogeneity

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  • Tomohiro Ando
  • Jushan Bai

Abstract

This article provides methods for flexibly capturing unobservable heterogeneity from longitudinal data in the context of an exponential family of distributions. The group memberships of individual units are left unspecified, and their heterogeneity is influenced by group-specific unobservable factor structures. The model includes, as special cases, probit, logit, and Poisson regressions with interactive fixed effects along with unknown group membership. We discuss a computationally efficient estimation method and derive the corresponding asymptotic theory. Uniform consistency of the estimated group membership is established. To test heterogeneous regression coefficients within groups, we propose a Swamy-type test that allows for unobserved heterogeneity. We apply the proposed method to the study of market structure of the taxi industry in New York City. Our method unveils interesting and important insights from large-scale longitudinal data that consist of over 450 million data points.

Suggested Citation

  • Tomohiro Ando & Jushan Bai, 2023. "Large-Scale Generalized Linear Models for Longitudinal Data with Grouped Patterns of Unobserved Heterogeneity," Journal of Business & Economic Statistics, Taylor & Francis Journals, vol. 41(3), pages 983-994, July.
    • Handle: RePEc:taf:jnlbes:v:41:y:2023:i:3:p:983-994
    DOI: 10.1080/07350015.2022.2097913
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