no code implementations • 11 Dec 2023 • Yifei Zong, David Barajas-Solano, Alexandre M. Tartakovsky
Uncertainty in the inverse solution is quantified in terms of the posterior distribution of CKLE coefficients, and we sample the posterior by solving a randomized PICKLE minimization problem, formulated by adding zero-mean Gaussian perturbations in the PICKLE loss function.
Physics-informed machine learning Uncertainty Quantification
no code implementations • 10 Dec 2022 • S. Sinha, Sai P. Nandanoori, David Barajas-Solano
Recent advancements in sensing and communication facilitate obtaining high-frequency real-time data from various physical systems like power networks, climate systems, biological networks, etc.
no code implementations • 8 Oct 2020 • Daniel Dylewsky, David Barajas-Solano, Tong Ma, Alexandre M. Tartakovsky, J. Nathan Kutz
Time series forecasting remains a central challenge problem in almost all scientific disciplines.
no code implementations • 29 Oct 2019 • Liu Yang, Sean Treichler, Thorsten Kurth, Keno Fischer, David Barajas-Solano, Josh Romero, Valentin Churavy, Alexandre Tartakovsky, Michael Houston, Prabhat, George Karniadakis
Uncertainty quantification for forward and inverse problems is a central challenge across physical and biomedical disciplines.
no code implementations • 9 Oct 2019 • Tong Ma, Renke Huang, David Barajas-Solano, Ramakrishna Tipireddy, Alexandre M. Tartakovsky
We propose a new forecasting method for predicting load demand and generation scheduling.
no code implementations • 24 Nov 2018 • Xiu Yang, David Barajas-Solano, Guzel Tartakovsky, Alexandre Tartakovsky
In this work, we propose a new Gaussian process regression (GPR)-based multifidelity method: physics-informed CoKriging (CoPhIK).
1 code implementation • 10 Aug 2018 • Alexandre M. Tartakovsky, Carlos Ortiz Marrero, Paris Perdikaris, Guzel D. Tartakovsky, David Barajas-Solano
We employ physics informed DNNs to estimate the unknown space-dependent diffusion coefficient in a linear diffusion equation and an unknown constitutive relationship in a non-linear diffusion equation.
Analysis of PDEs Computational Physics