no code implementations • 17 Jul 2018 • Leo L. Duan, Xia Wang, Rhonda D. Szczesniak
Different from a simple mixture of independent GPs, the mixture in stationarity allows the components to be spatial correlated, leading to improved prediction efficiency.
no code implementations • 10 Feb 2015 • Leo L. Duan, Xia Wang, Rhonda D. Szczesniak
Gaussian process is a theoretically appealing model for nonparametric analysis, but its computational cumbersomeness hinders its use in large scale and the existing reduced-rank solutions are usually heuristic.
no code implementations • 20 Aug 2014 • Leo L. Duan, John P. Clancy, Rhonda D. Szczesniak
Keyword: Extrapolation, Joint Model, Longitudinal Model, Hierarchical Gaussian Process, Cystic Fibrosis, Medical Monitoring
no code implementations • 18 Aug 2014 • Leo L. Duan, John P. Clancy, Rhonda D. Szczesniak
We propose a novel "tree-averaging" model that utilizes the ensemble of classification and regression trees (CART).