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Fixed Effects as Generated Regressors

Jiaqi Huang

arXiv 9 Feb 2026 · Econometrics

arXiv:2602.08899 · PDF · DOI · OpenAlex · Extracted main text

Abstract

Many economic models feature moment conditions that involve latent variables. When the latent variables are individual fixed effects in an auxiliary panel data regression, we construct orthogonal moments that eliminate first-order bias induced by estimating the fixed effects. Machine Learning methods and Empirical Bayes methods can be used to improve the estimate of the nuisance parameters in the orthogonal moments. We establish a central limit theorem based on the orthogonal moments without relying on exogeneity assumptions between panel data residuals and the cross-sectional moment functions. In a simulation study where the exogeneity assumption is violated, the estimator based on orthogonal moments has smaller bias compared with other estimators relying on that assumption. An empirical application on experimental site selection demonstrates how the method can be used for nonlinear moment conditions.

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37
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141
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distinct cited
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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1S. Bonhomme, K. Jochmans, and M. Weidner (2024) A neyman-orthogonalization approach to the incidental parameter problem1.00073100%
2V. Chernozhukov, J. C. Escanciano, H. Ichimura, W. K. Newey, and J.… (2022) Locally robust semiparametric estimation0.97112492%
3V. Chernozhukov, D. Chetverikov, M. Demirer, E. Duflo, C. Hansen, W.… (2018) Double/debiased machine learning for treatment and structural parameters0.9568588%
4J. Chen, J. Gu, and S. Kwon (2025) Empirical bayes shrinkage (mostly) does not correct the measurement error in regression0.874212100%
5T. Xie (2025) Automatic inference for value-added regressions0.874162100%
6S. Kwon (2023) Optimal shrinkage estimation of fixed effects in linear panel data models0.87482100%
7H. Ichimura and W. K. Newey (2022) The influence function of semiparametric estimators0.87462100%
8J. D. Angrist, P. D. Hull, P. A. Pathak, and C. R. Walters (2017) Leveraging lotteries for school value-added: Testing and estimation0.81142100%
9L. Battaglia, T. Christensen, S. Hansen, and S. Sacher (2024) Inference for regression with variables generated by ai or machine learning0.81142100%
10S. Wang and D. Y. Yang (2025) Policy experimentation in china: The political economy of policy learning0.81142100%

Showing the top 10 of 37 scored citations.