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Spectral and post-spectral estimators for grouped panel data models

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arxiv 2212.13324 v2 pith:Q72PEVO6 submitted 2022-12-26 econ.EM stat.AP

classification econ.EMstat.AP
keywords estimatorpost-spectralgroupedestimatorsconsistentdatafixed-effectmodels
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abstract

In this paper, we develop spectral and post-spectral estimators for grouped panel data models. Both estimators are consistent in the asymptotics where the number of observations $N$ and the number of time periods $T$ simultaneously grow large. In addition, the post-spectral estimator is $\sqrt{NT}$-consistent and asymptotically normal with mean zero under the assumption of well-separated groups even if $T$ is growing much slower than $N$. The post-spectral estimator has, therefore, theoretical properties that are comparable to those of the grouped fixed-effect estimator developed by Bonhomme and Manresa (2015). In contrast to the grouped fixed-effect estimator, however, our post-spectral estimator is computationally straightforward.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Robust Inference Methods for Latent Group Panel Models under Possible Group Non-Separation

    econ.EM 2025-11 conditional novelty 7.0 of 10

    Selective conditional inference gives Wald tests on estimated latent panel groups a truncated chi-square null distribution, valid even without group separation.

  2. K-Means Panel Data Clustering in the Presence of Small Groups

    econ.EM 2025-08 conditional novelty 6.0 of 10

    In grouped panel data, tiny groups are hard to estimate and standard information criteria can pick the wrong number of groups; this paper derives when estimation works and proposes modified criteria.

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