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11/28/2022
On the use of hybrid coarse-level models in multilevel minimization methods
Solving large-scale nonlinear minimization problems is computationally d...
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03/26/2021
Multilevel Active-Set Trust-Region (MASTR) Method for Bound Constrained Minimization
We introduce a novel variant of the recursive multilevel trust-region (R...
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03/25/2021
A Matrix-free Multigrid Preconditioner for Jacobian-free Newton-Krylov Methods
In this work, we propose a multigrid preconditioner for Jacobian-free Ne...
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07/25/2020
Large scale simulation of pressure induced phase-field fracture propagation using Utopia
Non-linear phase field models are increasingly used for the simulation o...
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06/28/2020
A Multilevel Approach to Training
We propose a novel training method based on nonlinear multilevel minimiz...
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04/13/2020
Multilevel Minimization for Deep Residual Networks
We present a new multilevel minimization framework for the training of d...
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03/01/2019
