102 citations · 320 across the 34 of their papers we have counts for
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General-purpose preconditioning for regularized interior point methods
Jacek Gondzio, Spyridon Pougkakiotis, John W. Pearson
In this paper we present general-purpose preconditioners for regularized augmented systems arising from optimization problems, and their corresponding normal equations. We discuss…
Material-separating regularizer for multi-energy X-ray tomography
Jacek Gondzio, Matti Lassas, Salla-Maaria Latva-Äijö +2
Dual-energy X-ray tomography is considered in a context where the target under imaging consists of two distinct materials. The materials are assumed to be possibly intertwined in s…
A new stopping criterion for Krylov solvers applied in Interior Point Methods
Filippo Zanetti, Jacek Gondzio
When an iterative method is applied to solve the linear equation system in interior point methods (IPMs), the attention is usually placed on accelerating their convergence by desig…
Sparse Approximations with Interior Point Methods
Valentina De Simone, Daniela di Serafino, Jacek Gondzio +2
Large-scale optimization problems that seek sparse solutions have become ubiquitous. They are routinely solved with various specialized first-order methods. Although such methods a…