A novel Bayesian computational approach for bridge-randomized quantile regression in high dimensional models

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Authors
Zhang, Shen
Dao, Mai
Ye, Keying
Han, Zifei
Wang, Min
Advisors
Issue Date
2024
Type
Article
Keywords
Asymmetric laplace distribution , Bayesian regularization , high-dimensional data , Markov chain Monte Carlo , Quantile regression
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Citation
Zhang, S., Dao, M., Ye, K., Han, Z., Wang, M. A novel Bayesian computational approach for bridge-randomized quantile regression in high dimensional models. (2024). Journal of Statistical Computation and Simulation. DOI: 10.1080/00949655.2024.2361303
Abstract

A bridge-randomized penalization that employs a prior for the shrinkage parameter, as opposed to the conventional bridge penalization with a fixed penalty, often delivers more superior performance compared to many other traditional shrinkage methods. In this paper, we develop an efficient Bayesian computational algorithm via the two-block Markov Chain Monte Carlo method for the bridge-randomized penalization in quantile regression to perform inference in the high-dimensional "large-p" and "large-p-small-n" settings. To construct a fully Bayesian formulation, we utilize the asymmetric Laplace distribution as an auxiliary error distribution and the generalized Gaussian distribution prior for the regression coefficients. Simulation studies encompassing a wide range of scenarios indicate that the proposed method performs at least as well as, and often better than, other existing procedures in terms of both parameter estimation and variable selection. Finally, a real-data application is provided for illustrative purposes. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

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Description
Publisher
Taylor and Francis Ltd.
Journal
Journal of Statistical Computation and Simulation
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ISSN
0094-9655
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