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ORCIDRalf Zimmermann 0002
Person information
- affiliation: DLR, Braunschweig, Germany
Other persons with the same name
- Ralf Zimmermann — disambiguation page
- Ralf Zimmermann 0001 — Ruhr-University Bochum, Germany
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2020 – today
- 2024
[j18]Thomas Bendokat
, Ralf Zimmermann, Pierre-Antoine Absil:
A Grassmann manifold handbook: basic geometry and computational aspects. Adv. Comput. Math. 50(1): 6 (2024)- [j17]Thomas Bendokat, Ralf Zimmermann, Pierre-Antoine Absil:
Correction: A Grassmann manifold handbook: basic geometry and computational aspects. Adv. Comput. Math. 50(2): 20 (2024) - [j16]Ralf Zimmermann, Kai Cheng:
Randomized greedy magic point selection schemes for nonlinear model reduction. Adv. Comput. Math. 50(4): 81 (2024) - [j15]Ralf Zimmermann, Ronny Bergmann:
Multivariate Hermite Interpolation on Riemannian Manifolds. SIAM J. Sci. Comput. 46(2): 1276- (2024) - [i6]Rasmus Jensen, Ralf Zimmermann:
Riemannian optimization on the symplectic Stiefel manifold using second-order information. CoRR abs/2404.08463 (2024) - [i5]Ralf Zimmermann, Jakob Stoye:
The injectivity radius of the compact Stiefel manifold under the Euclidean metric. CoRR abs/2405.02268 (2024) - 2023
- [j14]Kai Cheng, Ralf Zimmermann:
Sliced Gradient-Enhanced Kriging for High-Dimensional Function Approximation. SIAM J. Sci. Comput. 45(6): 2858-2885 (2023) - 2022
- [j13]Ralf Zimmermann, Knut Hüper:
Computing the Riemannian Logarithm on the Stiefel Manifold: Metrics, Methods, and Performance. SIAM J. Matrix Anal. Appl. 43(2): 953-980 (2022) - 2021
- [j12]Ralf Zimmermann:
A geometric approach to subspace updates and orthogonal matrix decompositions under rank-one modifications. Math. Comput. 90(328): 671-688 (2021) - [c3]Thomas Bendokat, Ralf Zimmermann:
Efficient Quasi-Geodesics on the Stiefel Manifold. GSI 2021: 763-771 - [i4]Thomas Bendokat, Ralf Zimmermann:
Efficient Quasi-Geodesics on the Stiefel Manifold. CoRR abs/2105.07017 (2021) - [i3]Thomas Bendokat, Ralf Zimmermann:
The real symplectic Stiefel and Grassmann manifolds: metrics, geodesics and applications. CoRR abs/2108.12447 (2021) - 2020
- [j11]Ralf Zimmermann:
Hermite Interpolation and Data Processing Errors on Riemannian Matrix Manifolds. SIAM J. Sci. Comput. 42(5): A2593-A2619 (2020) - [i2]Thomas Bendokat, Ralf Zimmermann, Pierre-Antoine Absil:
A Grassmann Manifold Handbook: Basic Geometry and Computational Aspects. CoRR abs/2011.13699 (2020)
2010 – 2019
- 2019
- [i1]Ralf Zimmermann:
Hermite Interpolation and data processing errors on Riemannian matrix manifolds. CoRR abs/1908.05875 (2019) - 2018
- [j10]Peter Benner, Heike Faßbender, Michael Hinze, Tatjana Stykel, Ralf Zimmermann:
Model reduction of complex dynamical systems - Editorial of the special issue corresponding to a workshop held at SDU Odense, Denmark, January 11-13, 2017. Adv. Comput. Math. 44(6): 1687-1691 (2018) - [j9]Anna Bertram, Ralf Zimmermann:
Theoretical investigations of the new Cokriging method for variable-fidelity surrogate modeling - Well-posedness and maximum likelihood training. Adv. Comput. Math. 44(6): 1693-1716 (2018) - [j8]Ralf Zimmermann, Benjamin Peherstorfer, Karen Willcox:
Geometric Subspace Updates with Applications to Online Adaptive Nonlinear Model Reduction. SIAM J. Matrix Anal. Appl. 39(1): 234-261 (2018) - 2017
- [j7]Ralf Zimmermann:
A Matrix-Algebraic Algorithm for the Riemannian Logarithm on the Stiefel Manifold under the Canonical Metric. SIAM J. Matrix Anal. Appl. 38(2): 322-342 (2017) - 2016
- [j6]Ralf Zimmermann, Karen Willcox:
An Accelerated Greedy Missing Point Estimation Procedure. SIAM J. Sci. Comput. 38(5) (2016) - 2015
- [c2]Ralf Zimmermann:
Local Parametrization of Subspaces on Matrix Manifolds via Derivative Information. ENUMATH 2015: 379-387 - 2014
- [j5]Ralf Zimmermann:
Erratum to "Asymptotic Behavior of the Likelihood Function of Covariance Matrices of Spatial Gaussian Processes". J. Appl. Math. 2014: 321932:1 (2014) - [j4]Ralf Zimmermann:
A Locally Parametrized Reduced-Order Model for the Linear Frequency Domain Approach to Time-Accurate Computational Fluid Dynamics. SIAM J. Sci. Comput. 36(3) (2014) - 2013
- [j3]Ralf Zimmermann:
Gradient-enhanced surrogate modeling based on proper orthogonal decomposition. J. Comput. Appl. Math. 237(1): 403-418 (2013) - [j2]Ralf Zimmermann:
On the Maximum Likelihood Training of Gradient-Enhanced Spatial Gaussian Processes. SIAM J. Sci. Comput. 35(6) (2013) - 2010
- [j1]Ralf Zimmermann:
Asymptotic Behavior of the Likelihood Function of Covariance Matrices of Spatial Gaussian Processes. J. Appl. Math. 2010: 494070:1-494070:17 (2010) - [c1]Ralf Zimmermann, Stefan Görtz:
Non-linear reduced order models for steady aerodynamics. ICCS 2010: 165-174
Coauthor Index
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