442 citations
- University of AntwerpBE597 papers
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5 papers · 2 filters
The Integrated Vehicle and Pollster Routing Problem
Sandra Gutiérrez, Andrés Miniguano-Trujillo, Diego Recalde +2
The National Statistics Bureau of Ecuador conducts monthly price surveys to monitor the evolution of the Consumer Price Index, a metric that measures the consumer prices of essenti…
Bilevel parameter learning for nonlocal image denoising models
M. D'Elia, J. C. De los Reyes, A. Miniguano-Trujillo
We propose a bilevel optimization approach for the estimation of parameters in nonlocal image denoising models. The parameters we consider are both the fidelity weight and weights…
Primal-dual block-proximal splitting for a class of non-convex problems
Stanislav Mazurenko, Jyrki Jauhiainen, Tuomo Valkonen
We develop block structure adapted primal-dual algorithms for non-convex non-smooth optimisation problems whose objectives can be written as compositions of non-smoo…
First-order primal-dual methods for nonsmooth nonconvex optimisation
Tuomo Valkonen
We provide an overview of primal-dual algorithms for nonsmooth and non-convex-concave saddle-point problems. This flows around a new analysis of such methods, using Bregman diverge…
Primal-dual proximal splitting and generalized conjugation in non-smooth non-convex optimization
Christian Clason, Stanislav Mazurenko, Tuomo Valkonen
We demonstrate that difficult non-convex non-smooth optimization problems, such as Nash equilibrium problems and anisotropic as well as isotropic Potts segmentation model, can be w…