Georg Stadler | DeepAI

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Chen Li
144 publications
Denis Zorin
34 publications
Omar Ghattas
29 publications
Eric Vanden-Eijnden
22 publications
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Tan Bui-Thanh
19 publications
Stefano Zampini
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David Keyes
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George Turkiyyah
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∙ 03/21/2023

Scalable Methods for Computing Sharp Extreme Event Probabilities in Infinite-Dimensional Stochastic Systems

We introduce and compare computational techniques for sharp extreme even...

0 Timo Schorlepp, et al. ∙

∙ 01/09/2023

Hierarchical off-diagonal low-rank approximation of Hessians in inverse problems, with application to ice sheet model initializaiton

Obtaining lightweight and accurate approximations of Hessian applies in ...

0 Tucker Hartland, et al. ∙

∙ 09/13/2022

Large deviation theory-based adaptive importance sampling for rare events in high dimensions

We propose a method for the accurate estimation of rare event or failure...

0 Shanyin Tong, et al. ∙

∙ 04/22/2022

Robust and efficient primal-dual Newton-Krylov solvers for viscous-plastic sea-ice models

We present a Newton-Krylov solver for a viscous-plastic sea-ice model. T...

0 Yu-hsuan Shih, et al. ∙

∙ 02/22/2022

A gradient-free subspace-adjusting ensemble sampler for infinite-dimensional Bayesian inverse problems

Sampling of sharp posteriors in high dimensions is a challenging problem...

0 Matthew M. Dunlop, et al. ∙

∙ 12/20/2021

Bayesian neural network priors for edge-preserving inversion

We consider Bayesian inverse problems wherein the unknown state is assum...

13 Chen Li, et al. ∙

∙ 11/29/2021

Estimating earthquake-induced tsunami inundation probabilities without sampling

Given a distribution of earthquake-induced seafloor elevations, we prese...

0 Shanyin Tong, et al. ∙

∙ 07/02/2021

Robust multigrid techniques for augmented Lagrangian preconditioning of incompressible Stokes equations with extreme viscosity variations

We present augmented Lagrangian Schur complement preconditioners and rob...

0 Yu-hsuan Shih, et al. ∙

∙ 10/01/2020

Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry

We present a new coil design paradigm for magnetic confinement in stella...

0 Andrew Giuliani, et al. ∙

∙ 07/28/2020

Extreme event probability estimation using PDE-constrained optimization and large deviation theory, with application to tsunamis

We propose and compare methods for the estimation of extreme event proba...

0 Shanyin Tong, et al. ∙

∙ 06/21/2020

Optimal design of large-scale Bayesian linear inverse problems under reducible model uncertainty: good to know what you don't know

We consider optimal design of infinite-dimensional Bayesian linear inver...

0 Alen Alexanderian, et al. ∙

∙ 03/24/2020

Advanced Newton Methods for Geodynamical Models of Stokes Flow with Viscoplastic Rheologies

Strain localization and resulting plasticity and failure play an importa...

0 Johann Rudi, et al. ∙

∙ 03/23/2020

Hierarchical Matrix Approximations of Hessians Arising in Inverse Problems Governed by PDEs

Hessian operators arising in inverse problems governed by partial differ...

0 Ilona Ambartsumyan, et al. ∙

∙ 03/20/2020

Bayesian approach to inverse scattering with topological priors

We propose a Bayesian inference framework to estimate uncertainties in i...

0 Ana Carpio, et al. ∙

∙ 12/18/2019

Optimal experimental design under irreducible uncertainty for inverse problems governed by PDEs

We present a method for computing A-optimal sensor placements for infini...

0 Karina Koval, et al. ∙

∙ 09/23/2019

Scalable Simulation of Realistic Volume Fraction Red Blood Cell Flows through Vascular Networks

High-resolution blood flow simulations have potential for developing bet...

0 Libin Lu, et al. ∙

∙ 08/16/2018

A comparative study of structural similarity and regularization for joint inverse problems governed by PDEs

Joint inversion refers to the simultaneous inference of multiple paramet...

0 Benjamin Crestel, et al. ∙

∙ 04/16/2018

Sparse solutions in optimal control of PDEs with uncertain parameters: the linear case

We study sparse solutions of optimal control problems governed by PDEs w...

0 Chen Li, et al. ∙

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