Sub-optimality of some continuous shrinkage priors

Published

Journal Article

© 2016 Two-component mixture priors provide a traditional way to induce sparsity in high-dimensional Bayes models. However, several aspects of such a prior, including computational complexities in high-dimensions, interpretation of exact zeros and non-sparse posterior summaries under standard loss functions, have motivated an amazing variety of continuous shrinkage priors, which can be expressed as global–local scale mixtures of Gaussians. Interestingly, we demonstrate that many commonly used shrinkage priors, including the Bayesian Lasso, do not have adequate posterior concentration in high-dimensional settings.

Full Text

Duke Authors

Cited Authors

  • Bhattacharya, A; Dunson, DB; Pati, D; Pillai, NS

Published Date

  • December 1, 2016

Published In

Volume / Issue

  • 126 / 12

Start / End Page

  • 3828 - 3842

International Standard Serial Number (ISSN)

  • 0304-4149

Digital Object Identifier (DOI)

  • 10.1016/j.spa.2016.08.007

Citation Source

  • Scopus