The Bayesian adaptive lasso regression

Math Biosci. 2018 Sep:303:75-82. doi: 10.1016/j.mbs.2018.06.004. Epub 2018 Jun 18.

Abstract

Classical adaptive lasso regression is known to possess the oracle properties; namely, it performs as well as if the correct submodel were known in advance. However, it requires consistent initial estimates of the regression coefficients, which are generally not available in high dimensional settings. In addition, none of the algorithms used to obtain the adaptive lasso estimators provide a valid measure of standard error. To overcome these drawbacks, some Bayesian approaches have been proposed to obtain the adaptive lasso and related estimators. In this paper, we consider a fully Bayesian treatment for the adaptive lasso that leads to a new Gibbs sampler with tractable full conditional posteriors. Through simulations and real data analyses, we compare the performance of the new Gibbs sampler with some of the existing Bayesian and non-Bayesian methods. Results show that the new approach performs well in comparison to the existing Bayesian and non-Bayesian approaches.

Keywords: Adaptive lasso; Bayesian inference; Gibbs sampler; Hierarchical model; Linear regression.

Publication types

  • Review

MeSH terms

  • Algorithms
  • Bayes Theorem*
  • Computer Simulation
  • Diabetes Mellitus / blood
  • Humans
  • Linear Models*
  • Lipids / blood
  • Male
  • Mathematical Concepts
  • Monte Carlo Method
  • Neoplasm Grading
  • Normal Distribution
  • Prostatic Neoplasms / pathology

Substances

  • Lipids