Our latest BAND paper, Model Mixing Using Bayesian Additive Regression Trees, has been posted to arXiv! In this work, John Yannotty develops a model for mixing multiple computer simulators, in this case EFT expansion models of nuclear dynamics from our physics collaborators.
We have a Postdoc position available to work on the BAND project! Exciting applications in nuclear physics using Bayesian model mixing techniques. Read more here.
Akira’s latest paper, “Using BART to Perform Pareto Optimization and Quantify its Uncertainties,” has been accepted to the special issue on Industry 4.0 at Technometrics! Joint work with Tom Santner and Ying Sun. Congrats Akira, 2 special issues in a row is pretty amazing!
Akira’s first paper, “Assessing variable activity for Bayesian regression trees,” has been accepted to the special issue on Sensitivity Analysis of Model Outputs at Reliability Engineering and System Safety. Joint work with Tom Santner. Congrats Akira, and have fun with the postdoc @Duke!
Our NSF grant “Bayesian Analysis of Nuclear Dynamics” has been awarded! This large, multi-institutional award seeks to bring the statistical tools of model mixing, calibration and uncertainty quantification to important problems at the frontier of nuclear physics. You can read the official announcement of this incredibly exciting project here and here.
Our latest BART paper, “Assessing variable activity for Bayesian regression trees,” has been posted to arXiv! In this work, Akira Horiguchi investigates alternatives to the usual split-count variable activity metrics. Building on the idea of Sobol indices, Akira finds that the popular split-count can, in fact, be quite misleading. Subsequently, an efficient algorithm for computing such indices in BART models is developed and an interesting connection to the usual split-count metric is described. We will be adding this feature to the OpenBT code base over the next few months! https://arxiv.org/abs/2005.13622
Our grant “Innovations for Bayesian Tree Ensemble Methodology” submitted to the National Science Foundation (NSF) has been awarded! This is a collaborative research project with Dr. Rob McCulloch (co-PI, Arizona State University), Dr. Ed George (co-PI, The University of Pennsylvania) and myself (PI, OSU). More exciting BART innovations incoming!
Our grant “An Advanced Spatio-temporal Statistical Methodology for Impact Studies on Air Quality and Renewable Energy” submitted to the prestigious King Abdullah University of Science and Technology (KAUST) Competitive Research Grant (CRG) program has been awarded! This is a collaborative research project with Dr. Ying Sun (PI, KAUST), Dr. Brian Reich (co-PI, NCSU) and myself (co-PI, OSU). Most excitingly, this grant will support some early stages of work for the dream project!
Our paper “Design and Analysis of Experiments on Non-Convex Regions” has won the 2018 Wilcoxon Award! Many thanks to my awesome collaborators on this project: Dr. Ofir Harari, Dr. Derek Bingham and Dr. Gwenn Flowers. This work appears in Technometrics.
Updates to my Research page outlining some of my recent publications and exciting new research directions. Design emulators rock!