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A Mean Field Approach to Empirical Bayes Estimation in Hi...
[Submitted on 28 Sep 2023 (v1), last revised 2 Jul 2026 (this ve · 2023-09-29 · via stat updates on arXiv.org

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Abstract:We study empirical Bayes estimation in high-dimensional linear regression. To facilitate computationally efficient estimation of the underlying prior, we adopt a variational empirical Bayes approach, introduced originally in Carbonetto and Stephens (2012) and Kim et al. (2022). We establish asymptotic consistency of the nonparametric maximum likelihood estimator (NPMLE) and its (computable) naive mean field variational surrogate under mild assumptions on the design and the prior. Assuming, in addition, that the naive mean field approximation has a dominant optimizer, we develop a computationally efficient approximation to the oracle posterior distribution, and establish its accuracy under the 1-Wasserstein metric. This enables computationally feasible Bayesian inference; e.g., construction of posterior credible intervals with an average coverage guarantee, Bayes optimal estimation for the regression coefficients, estimation of the proportion of non-nulls, etc. Our analysis covers both deterministic and random designs, and accommodates correlations among the features. To the best of our knowledge, this provides the first rigorous nonparametric empirical Bayes method in a high-dimensional regression setting without sparsity.

Submission history

From: Subhabrata Sen [view email]
[v1] Thu, 28 Sep 2023 20:51:40 UTC (143 KB)
[v2] Wed, 25 Oct 2023 21:20:28 UTC (145 KB)
[v3] Thu, 2 Jul 2026 16:45:25 UTC (149 KB)

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