Bounds on nonlinear operators in finite-dimensional banach spaces
Numerische Mathematik
Galerkin Proper Orthogonal Decomposition Methods for a General Equation in Fluid Dynamics
SIAM Journal on Numerical Analysis
Ordinary Differential Equations in Theory and Practice
Ordinary Differential Equations in Theory and Practice
A New Look at Proper Orthogonal Decomposition
SIAM Journal on Numerical Analysis
Error Estimation for Reduced-Order Models of Dynamical Systems
SIAM Journal on Numerical Analysis
Applied Numerical Mathematics
Nonlinear Model Reduction via Discrete Empirical Interpolation
SIAM Journal on Scientific Computing
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
POD/DEIM nonlinear model order reduction of an ADI implicit shallow water equations model
Journal of Computational Physics
A numerical investigation of velocity-pressure reduced order models for incompressible flows
Journal of Computational Physics
Non-linear model reduction for the Navier-Stokes equations using residual DEIM method
Journal of Computational Physics
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This paper derives state space error bounds for the solutions of reduced systems constructed using proper orthogonal decomposition (POD) together with the discrete empirical interpolation method (DEIM) recently developed for nonlinear dynamical systems [SIAM J. Sci. Comput., 32 (2010), pp. 2737-2764]. The resulting error estimates are shown to be proportional to the sums of the singular values corresponding to neglected POD basis vectors both in Galerkin projection of the reduced system and in the DEIM approximation of the nonlinear term. The analysis is particularly relevant to ODE systems arising from spatial discretizations of parabolic PDEs. The derivation clearly identifies where the parabolicity is crucial. It also explains how the DEIM approximation error involving the nonlinear term comes into play.