2 papers
math.NA2025
Alternating steepest descent methods for tensor completion with applications to spectromicroscopy
Oliver Townsend, Sergey Dolgov, Silvia Gazzola +1
In this paper we develop two new Tensor Alternating Steepest Descent algorithms for tensor completion in the low-rank -product format, whereby we aim to reconstruct an e…
math.OC2024
Efficient gradient-based methods for bilevel learning via recycling Krylov subspaces
Matthias J. Ehrhardt, Silvia Gazzola, Sebastian J. Scott
Many optimization problems require hyperparameters, i.e., parameters that must be pre-specified in advance, such as regularization parameters and parametric regularizers in variati…