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math.OC2017
Non-smooth Non-convex Bregman Minimization: Unification and new Algorithms
Peter Ochs, Jalal Fadili, Thomas Brox
We propose a unifying algorithm for non-smooth non-convex optimization. The algorithm approximates the objective function by a convex model function and finds an approximate (Bregm…
math.OC2016
Techniques for Gradient Based Bilevel Optimization with Nonsmooth Lower Level Problems
Peter Ochs, René Ranftl, Thomas Brox +1
We propose techniques for approximating bilevel optimization problems with non-smooth lower level problems that can have a non-unique solution. To this end, we substitute the expre…