105 citations · 761 across the 48 of their papers we have counts for
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math.OC2026
Primal-dual multigrid methods for nonsmooth optimization
Felipe Guerra, Tuomo Valkonen
In optimization, one often encounters problems of the form . In this work, we combine primal-dual algorithms with multigrid techniques for their solution. T…
math.OC2026
Single-loop approaches to nonsmooth bilevel optimisation
Ensio Suonperä, Tuomo Valkonen
We study bilevel optimisation problems in which the inner problem is represented as a set-valued, parametric constraint. We develop relevant optimistic and pessimistic calculus rul…
math.OC2026
Dynamic inverse problems: Single-loop online algorithms
Jyrki Jauhiainen, Yassine Nabou, Tuomo Valkonen
We study efficient online methods for dynamic inverse problems with infinite time horizon. We concentrate, in particular, on problems whose forward model arises from a PDE. Our mot…