Ralf Zimmermann

According to our database, Ralf Zimmermann authored at least 24 papers between 2010 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Randomized greedy magic point selection schemes for nonlinear model reduction.

Ralf Zimmermann, Kai Cheng

Adv. Comput. Math., August, 2024

Correction: A Grassmann manifold handbook: basic geometry and computational aspects.

Thomas Bendokat, Ralf Zimmermann, Pierre-Antoine Absil

Adv. Comput. Math., April, 2024

A Grassmann manifold handbook: basic geometry and computational aspects.

Thomas Bendokat, Ralf Zimmermann, Pierre-Antoine Absil

Adv. Comput. Math., February, 2024

Multivariate Hermite Interpolation on Riemannian Manifolds.

Ralf Zimmermann, Ronny Bergmann

SIAM J. Sci. Comput., 2024

The injectivity radius of the compact Stiefel manifold under the Euclidean metric.

Ralf Zimmermann, Jakob Stoye

CoRR, 2024

Riemannian optimization on the symplectic Stiefel manifold using second-order information.

Rasmus Jensen, Ralf Zimmermann

CoRR, 2024

2023

Sliced Gradient-Enhanced Kriging for High-Dimensional Function Approximation.

Kai Cheng, Ralf Zimmermann

SIAM J. Sci. Comput., December, 2023

2022

Computing the Riemannian Logarithm on the Stiefel Manifold: Metrics, Methods, and Performance.

Ralf Zimmermann, Knut Hüper

SIAM J. Matrix Anal. Appl., June, 2022

2021

A geometric approach to subspace updates and orthogonal matrix decompositions under rank-one modifications.

Ralf Zimmermann

Math. Comput., 2021

The real symplectic Stiefel and Grassmann manifolds: metrics, geodesics and applications.

Thomas Bendokat, Ralf Zimmermann

CoRR, 2021

Efficient Quasi-Geodesics on the Stiefel Manifold.

Thomas Bendokat, Ralf Zimmermann

Proceedings of the Geometric Science of Information - 5th International Conference, 2021

2020

Hermite Interpolation and Data Processing Errors on Riemannian Matrix Manifolds.

Ralf Zimmermann

SIAM J. Sci. Comput., 2020

2018

Geometric Subspace Updates with Applications to Online Adaptive Nonlinear Model Reduction.

Ralf Zimmermann, Benjamin Peherstorfer, Karen Willcox

SIAM J. Matrix Anal. Appl., 2018

Theoretical investigations of the new Cokriging method for variable-fidelity surrogate modeling - Well-posedness and maximum likelihood training.

Anna Bertram, Ralf Zimmermann

Adv. Comput. Math., 2018

Model reduction of complex dynamical systems - Editorial of the special issue corresponding to a workshop held at SDU Odense, Denmark, January 11-13, 2017.

Peter Benner, Heike Faßbender, Michael Hinze, Tatjana Stykel, Ralf Zimmermann

Adv. Comput. Math., 2018

2017

A Matrix-Algebraic Algorithm for the Riemannian Logarithm on the Stiefel Manifold under the Canonical Metric.

Ralf Zimmermann

SIAM J. Matrix Anal. Appl., 2017

2016

An Accelerated Greedy Missing Point Estimation Procedure.

Ralf Zimmermann, Karen Willcox

SIAM J. Sci. Comput., 2016

2015

Local Parametrization of Subspaces on Matrix Manifolds via Derivative Information.

Ralf Zimmermann

Proceedings of the Numerical Mathematics and Advanced Applications - ENUMATH 2015, 2015

2014

A Locally Parametrized Reduced-Order Model for the Linear Frequency Domain Approach to Time-Accurate Computational Fluid Dynamics.

Ralf Zimmermann

SIAM J. Sci. Comput., 2014

Erratum to "Asymptotic Behavior of the Likelihood Function of Covariance Matrices of Spatial Gaussian Processes".

Ralf Zimmermann

J. Appl. Math., 2014

2013

On the Maximum Likelihood Training of Gradient-Enhanced Spatial Gaussian Processes.

Ralf Zimmermann

SIAM J. Sci. Comput., 2013

Gradient-enhanced surrogate modeling based on proper orthogonal decomposition.

Ralf Zimmermann

J. Comput. Appl. Math., 2013

2010

Non-linear reduced order models for steady aerodynamics.

Ralf Zimmermann, Stefan Görtz

Proceedings of the International Conference on Computational Science, 2010

Asymptotic Behavior of the Likelihood Function of Covariance Matrices of Spatial Gaussian Processes.

Ralf Zimmermann

J. Appl. Math., 2010