Search Results for author: Jim A. Gaffney

Found 4 papers, 0 papers with code

Learning thermodynamically constrained equations of state with uncertainty

no code implementations29 Jun 2023 Himanshu Sharma, Jim A. Gaffney, Dimitrios Tsapetis, Michael D. Shields

Since there are inherent uncertainties in the calibration data (parametric uncertainty) and the assumed functional EOS form (model uncertainty), it is essential to perform uncertainty quantification (UQ) to improve confidence in the EOS predictions.

GPR Uncertainty Quantification

Suppressing simulation bias using multi-modal data

no code implementations19 Apr 2021 Bogdan Kustowski, Jim A. Gaffney, Brian K. Spears, Gemma J. Anderson, Rushil Anirudh, Peer-Timo Bremer, Jayaraman J. Thiagarajan, Michael K. G. Kruse, Ryan C. Nora

The method described in this paper can be applied to a wide range of problems that require transferring knowledge from simulations to the domain of experiments.

Transfer Learning

Meaningful uncertainties from deep neural network surrogates of large-scale numerical simulations

no code implementations26 Oct 2020 Gemma J. Anderson, Jim A. Gaffney, Brian K. Spears, Peer-Timo Bremer, Rushil Anirudh, Jayaraman J. Thiagarajan

Large-scale numerical simulations are used across many scientific disciplines to facilitate experimental development and provide insights into underlying physical processes, but they come with a significant computational cost.

Variational Inference

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