- Volume 24, Number 1 (2018), 231-256.
Posterior concentration rates for empirical Bayes procedures with applications to Dirichlet process mixtures
We provide conditions on the statistical model and the prior probability law to derive contraction rates of posterior distributions corresponding to data-dependent priors in an empirical Bayes approach for selecting prior hyper-parameter values. We aim at giving conditions in the same spirit as those in the seminal article of Ghosal and van der Vaart [Ann. Statist. 35 (2007) 192–223]. We then apply the result to specific statistical settings: density estimation using Dirichlet process mixtures of Gaussian densities with base measure depending on data-driven chosen hyper-parameter values and intensity function estimation of counting processes obeying the Aalen model. In the former setting, we also derive recovery rates for the related inverse problem of density deconvolution. In the latter, a simulation study for inhomogeneous Poisson processes illustrates the results.
Bernoulli, Volume 24, Number 1 (2018), 231-256.
Received: March 2015
Revised: May 2016
First available in Project Euclid: 27 July 2017
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Donnet, Sophie; Rivoirard, Vincent; Rousseau, Judith; Scricciolo, Catia. Posterior concentration rates for empirical Bayes procedures with applications to Dirichlet process mixtures. Bernoulli 24 (2018), no. 1, 231--256. doi:10.3150/16-BEJ872. https://projecteuclid.org/euclid.bj/1501142441
- Supplement to “Posterior concentration rates for empirical Bayes procedures with applications to Dirichlet process mixtures”. This supplement contains the proofs of Theorem 2, Proposition 1 and Theorem 3 from the mentioned article.