no code implementations • 18 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.
no code implementations • 15 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.
1 code implementation • 5 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