Search Results for author: Mohamed Aziz Bhouri

Found 9 papers, 6 papers with code

Joint Parameter and Parameterization Inference with Uncertainty Quantification through Differentiable Programming

no code implementations4 Mar 2024 Yongquan Qu, Mohamed Aziz Bhouri, Pierre Gentine

Accurate representations of unknown and sub-grid physical processes through parameterizations (or closure) in numerical simulations with quantified uncertainty are critical for resolving the coarse-grained partial differential equations that govern many problems ranging from weather and climate prediction to turbulence simulations.

Bayesian Inference Uncertainty Quantification

Scalable Bayesian optimization with high-dimensional outputs using randomized prior networks

1 code implementation14 Feb 2023 Mohamed Aziz Bhouri, Michael Joly, Robert Yu, Soumalya Sarkar, Paris Perdikaris

Several fundamental problems in science and engineering consist of global optimization tasks involving unknown high-dimensional (black-box) functions that map a set of controllable variables to the outcomes of an expensive experiment.

Bayesian Optimization Decision Making +1

History-Based, Bayesian, Closure for Stochastic Parameterization: Application to Lorenz '96

1 code implementation26 Oct 2022 Mohamed Aziz Bhouri, Pierre Gentine

To address these issues, we develop a new type of parameterization (closure) which is based on a Bayesian formalism for neural networks, to account for uncertainty quantification, and includes memory, to account for the non-instantaneous response of the closure.

Uncertainty Quantification

Fast PDE-constrained optimization via self-supervised operator learning

1 code implementation25 Oct 2021 Sifan Wang, Mohamed Aziz Bhouri, Paris Perdikaris

Design and optimal control problems are among the fundamental, ubiquitous tasks we face in science and engineering.

Operator learning

Gaussian processes meet NeuralODEs: A Bayesian framework for learning the dynamics of partially observed systems from scarce and noisy data

1 code implementation4 Mar 2021 Mohamed Aziz Bhouri, Paris Perdikaris

This paper presents a machine learning framework (GP-NODE) for Bayesian systems identification from partial, noisy and irregular observations of nonlinear dynamical systems.

Bayesian Inference Gaussian Processes +1

Model-Order-Reduction Approach for Structural Health Monitoring of Large Deployed Structures with Localized Operational Excitations

no code implementations15 Dec 2020 Mohamed Aziz Bhouri

Such problem has $45$ parameters and shows the merits of the two-level PR-RBC approach and of the correlation function-based features in the context of operational excitations, other nuisance parameters and added noise.

Numerical Analysis Numerical Analysis

Bayesian differential programming for robust systems identification under uncertainty

1 code implementation15 Apr 2020 Yibo Yang, Mohamed Aziz Bhouri, Paris Perdikaris

This paper presents a machine learning framework for Bayesian systems identification from noisy, sparse and irregular observations of nonlinear dynamical systems.

Bayesian Inference Model Discovery

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