Search Results for author: Ray Bai

Found 3 papers, 1 papers with code

Sparse high-dimensional linear mixed modeling with a partitioned empirical Bayes ECM algorithm

no code implementations18 Oct 2023 Anja Zgodic, Ray Bai, Jiajia Zhang, Alexander C. McLain

We use empirical Bayes estimators of hyperparameters for increased flexibility and an Expectation-Conditional-Minimization (ECM) algorithm for computationally efficient maximum a posteriori probability (MAP) estimation of parameters.

Variable Selection

Quantifying predictive uncertainty of aphasia severity in stroke patients with sparse heteroscedastic Bayesian high-dimensional regression

no code implementations15 Sep 2023 Anja Zgodic, Ray Bai, Jiajia Zhang, YuAn Wang, Chris Rorden, Alexander McLain

Bayesian heteroscedastic linear regression models relax the homoscedastic error assumption but can enforce restrictive prior assumptions on parameters, and many are computationally infeasible in the high-dimensional setting.

Prediction Intervals regression +1

Spike-and-Slab Group Lassos for Grouped Regression and Sparse Generalized Additive Models

1 code implementation5 Mar 2019 Ray Bai, Gemma E. Moran, Joseph Antonelli, Yong Chen, Mary R. Boland

We introduce the spike-and-slab group lasso (SSGL) for Bayesian estimation and variable selection in linear regression with grouped variables.

Methodology

Cannot find the paper you are looking for? You can Submit a new open access paper.