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- W2005067744 abstract "This article examines the convergence properties of a Bayesian model selection procedure based on a non-local prior density in ultrahigh-dimensional settings. The performance of the model selection procedure is also compared to popular penalized likelihood methods. Coupling diagnostics are used to bound the total variation distance between iterates in an Markov chain Monte Carlo (MCMC) algorithm and the posterior distribution on the model space. In several simulation scenarios in which the number of observations exceeds 100, rapid convergence and high accuracy of the Bayesian procedure is demonstrated. Conversely, the coupling diagnostics are successful in diagnosing lack of convergence in several scenarios for which the number of observations is less than 100. The accuracy of the Bayesian model selection procedure in identifying high probability models is shown to be comparable to commonly used penalized likelihood methods, including extensions of smoothly clipped absolute deviations (SCAD) and least absolute shrinkage and selection operator (LASSO) procedures." @default.
- W2005067744 created "2016-06-24" @default.
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- W2005067744 date "2013-12-01" @default.
- W2005067744 modified "2023-10-16" @default.
- W2005067744 title "On Numerical Aspects of Bayesian Model Selection in High and Ultrahigh-dimensional Settings" @default.
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- W2005067744 doi "https://doi.org/10.1214/13-ba818" @default.
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