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- Georg Stadler
- Comp. Opt. and Appl.
- 2007

Abstract
Elliptic optimal control problems with L1-control cost are analyzed. Due to the nonsmooth objective functional the optimal controls are identically zero on large parts of the control domain.… (More)

- Tan Bui-Thanh, Omar Ghattas, James Martin, Georg Stadler
- SIAM J. Scientific Computing
- 2013

We present a computational framework for estimating the uncertainty in the numerical solution of linearized infinite-dimensional statistical inverse problems. We adopt the Bayesian inference… (More)

- Michael Hintermüller, Georg Stadler
- SIAM J. Scientific Computing
- 2006

In this paper, a primal-dual algorithm for total bounded variation (TV)–type image restoration is analyzed and tested. Analytically it turns out that employing a global Lregularization, with 1 < s ≤… (More)

- Georg Stadler, Michael Gurnis, Carsten Burstedde, Lucas C. Wilcox, Laura Alisic, Omar Ghattas
- Science
- 2010

Plate tectonics is regulated by driving and resisting forces concentrated at plate boundaries, but observationally constrained high-resolution models of global mantle flow remain a computational… (More)

- Lucas C. Wilcox, Georg Stadler, Carsten Burstedde, Omar Ghattas
- J. Comput. Physics
- 2010

We introduce a high-order discontinuous Galerkin (dG) scheme for the numerical solution of three-dimensional (3D) wave propagation problems in coupled elastic–acoustic media. A velocity–strain… (More)

We propose an infinite-dimensional adjoint-based inexact Gauss–Newton method for the solution of inverse problems governed by Stokes models of ice sheet flow with nonlinear rheology and sliding law.… (More)

- Alen Alexanderian, Noemi Petra, Georg Stadler, Omar Ghattas
- SIAM J. Scientific Computing
- 2014

We present an efficient method for computing A-optimal experimental designs for infinite-dimensional Bayesian linear inverse problems governed by partial differential equations (PDEs). Specifically,… (More)

- Roland Herzog, Georg Stadler, Gerd Wachsmuth
- SIAM J. Control and Optimization
- 2012

We study optimal control problems in which controls with certain sparsity patterns are preferred. For time-dependent problems the approach can be used to find locations for control devices that allow… (More)

- Tan Bui-Thanh, Carsten Burstedde, Omar Ghattas, James Martin, Georg Stadler, Lucas C. Wilcox
- International Conference for High Performance…
- 2012

Quantifying uncertainties in large-scale simulations has emerged as the central challenge facing CS&E. When the simulations require supercomputers, and uncertain parameter dimensions are large,… (More)

- Noémi Petra, Georg Stadler
- 2011

We discuss solution methods for inverse problems, in which the unknown parameters are connected to the measurements through a partial differential equation (PDE). Various features that commonly arise… (More)