no code implementations • 19 May 2025 • Xinzhu Liang, Joseph M. Lukens, Sanjaya Lohani, Brian T. Kirby, Thomas A. Searles, Xin Qiu, Kody J. H. Law
A systematic numerical study reveals that parallel implementations of SMC and MCMC are comparable to serial implementations in terms of performance and total cost, and they achieve accuracy at or beyond the state-of-the-art (SOTA) methods like deep ensembles at convergence, along with substantially improved uncertainty quantification (UQ)--in particular, epistemic UQ.
no code implementations • 9 Feb 2024 • Xinzhu Liang, Joseph M. Lukens, Sanjaya Lohani, Brian T. Kirby, Thomas A. Searles, Kody J. H. Law
The Bayesian posterior distribution can only be evaluated up-to a constant of proportionality, which makes simulation and consistent estimation challenging.
1 code implementation • 3 Feb 2024 • Shangda Yang, Vitaly Zankin, Maximilian Balandat, Stefan Scherer, Kevin Carlberg, Neil Walton, Kody J. H. Law
We leverage multilevel Monte Carlo (MLMC) to improve the performance of multi-step look-ahead Bayesian optimization (BO) methods that involve nested expectations and maximizations.
no code implementations • 25 Mar 2022 • Michael D. White, Alexander Tarakanov, Christopher P. Race, Philip J. Withers, Kody J. H. Law
The focus is on materials microstructure.
no code implementations • 24 Mar 2022 • Neil K. Chada, Ajay Jasra, Kody J. H. Law, Sumeetpal S. Singh
In particular, an MLMC method that was introduced is used to approximate posterior expectations of Bayesian TNN models with optimal computational complexity, and this is mathematically proved.
1 code implementation • 24 Feb 2021 • Kody J. H. Law, Vitaly Zankin
Furthermore, for p unknown covariates the method can be implemented exactly online with a cost of $O(p^3)$ in computation and $O(p^2)$ in memory per iteration -- in other words, the cost per iteration is independent of n, and in principle infinite data can be considered.
1 code implementation • 24 Feb 2021 • Jeremy Heng, Ajay Jasra, Kody J. H. Law, Alexander Tarakanov
In this article, we consider computing expectations w. r. t.
Bayesian Inference
Computation
Numerical Analysis
Numerical Analysis
Methodology
1 code implementation • 14 Jan 2021 • Adam Spannaus, Kody J. H. Law, Piotr Luszczek, Farzana Nasrin, Cassie Putman Micucci, Peter K. Liaw, Louis J. Santodonato, David J. Keffer, Vasileios Maroulas
Significant progress in many classes of materials could be made with the availability of experimentally-derived large datasets composed of atomic identities and three-dimensional coordinates.
no code implementations • 15 May 2019 • David E. Bernholdt, Mark R. Cianciosa, Clement Etienam, David L. Green, Kody J. H. Law, J. M. Park
This paper presents a method for solving the supervised learning problem in which the output is highly nonlinear and discontinuous.
no code implementations • 26 Jul 2018 • Neil K. Chada, Jordan Franks, Ajay Jasra, Kody J. H. Law, Matti Vihola
The resulting estimator leads to inference without a bias from the time-discretisation as the number of Markov chain iterations increases.
Bayesian Inference
Methodology
Probability
Computation
65C05 (primary), 60H35, 65C35, 65C40 (secondary)