Search Results - "Aragón Artacho, Francisco J."
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A Direct Proof of Convergence of Davis–Yin Splitting Algorithm Allowing Larger Stepsizes
Published in Set-valued and variational analysis (01-09-2022)“…This note is devoted to the splitting algorithm proposed by Davis and Yin (Set-valued Var. Anal. 25 (4), 829–858, 2017 ) for computing a zero of the sum of…”
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An enhanced formulation for solving graph coloring problems with the Douglas–Rachford algorithm
Published in Journal of global optimization (01-06-2020)“…We study the behavior of the Douglas–Rachford algorithm on the graph vertex-coloring problem. Given a graph and a number of colors, the goal is to find a…”
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Local convergence of the Levenberg–Marquardt method under Hölder metric subregularity
Published in Advances in computational mathematics (01-12-2019)“…We describe and analyse Levenberg–Marquardt methods for solving systems of nonlinear equations. More specifically, we propose an adaptive formula for the…”
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Distributed forward-backward methods for ring networks
Published in Computational optimization and applications (01-12-2023)“…In this work, we propose and analyse forward-backward-type algorithms for finding a zero of the sum of finitely many monotone operators, which are not based on…”
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A primal-dual splitting algorithm for composite monotone inclusions with minimal lifting
Published in Numerical algorithms (01-05-2023)“…In this work, we study resolvent splitting algorithms for solving composite monotone inclusion problems. The objective of these general problems is finding a…”
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The Douglas–Rachford algorithm for convex and nonconvex feasibility problems
Published in Mathematical methods of operations research (Heidelberg, Germany) (01-04-2020)“…The Douglas–Rachford algorithm is an optimization method that can be used for solving feasibility problems. To apply the method, it is necessary that the…”
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A new projection method for finding the closest point in the intersection of convex sets
Published in Computational optimization and applications (01-01-2018)“…In this paper we present a new iterative projection method for finding the closest point in the intersection of convex sets to any arbitrary point in a Hilbert…”
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Recent Results on Douglas–Rachford Methods for Combinatorial Optimization Problems
Published in Journal of optimization theory and applications (01-10-2014)“…We discuss recent positive experiences applying convex feasibility algorithms of Douglas–Rachford type to highly combinatorial and far from convex problems…”
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Global behavior of the Douglas–Rachford method for a nonconvex feasibility problem
Published in Journal of global optimization (01-06-2016)“…In recent times the Douglas–Rachford algorithm has been observed empirically to solve a variety of nonconvex feasibility problems including those of a…”
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Global convergence of a non-convex Douglas–Rachford iteration
Published in Journal of global optimization (01-11-2013)“…We establish a region of convergence for the proto-typical non-convex Douglas–Rachford iteration which finds a point on the intersection of a line and a…”
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Applications of convex analysis within mathematics
Published in Mathematical programming (01-12-2014)“…In this paper, we study convex analysis and its theoretical applications. We first apply important tools of convex analysis to Optimization and to Analysis. We…”
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DOUGLAS–RACHFORD FEASIBILITY METHODS FOR MATRIX COMPLETION PROBLEMS
Published in The ANZIAM journal (01-04-2014)“…In this paper, we give general recommendations for successful application of the Douglas–Rachford reflection method to convex and nonconvex real matrix…”
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13
Walking on Real Numbers
Published in The Mathematical intelligencer (01-03-2013)“…Artacho et al describe and exhibit uniform walks on various numbers, both rational and irrational, artificial and natural. They look at quantifying two of the…”
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Accelerating the DC algorithm for smooth functions
Published in Mathematical programming (01-05-2018)“…We introduce two new algorithms to minimise smooth difference of convex (DC) functions that accelerate the convergence of the classical DC algorithm (DCA). We…”
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15
Computing the Resolvent of the Sum of Maximally Monotone Operators with the Averaged Alternating Modified Reflections Algorithm
Published in Journal of optimization theory and applications (01-06-2019)“…The averaged alternating modified reflections algorithm is a projection method for finding the closest point in the intersection of closed and convex sets to a…”
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Strengthened splitting methods for computing resolvents
Published in Computational optimization and applications (01-11-2021)“…In this work, we develop a systematic framework for computing the resolvent of the sum of two or more monotone operators which only activates each operator in…”
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The cyclic Douglas-Rachford algorithm with r-sets-Douglas-Rachford operators
Published in Optimization methods & software (04-07-2019)“…The Douglas-Rachford (DR) algorithm is an iterative procedure that uses sequential reflections onto convex sets and which has become popular for convex…”
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Optimal rates of linear convergence of the averaged alternating modified reflections method for two subspaces
Published in Numerical algorithms (01-10-2019)“…The averaged alternating modified reflections (AAMR) method is a projection algorithm for finding the closest point in the intersection of convex sets to any…”
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Solving Graph Coloring Problems with the Douglas-Rachford Algorithm
Published in Set-valued and variational analysis (01-06-2018)“…We present the Douglas-Rachford algorithm as a successful heuristic for solving graph coloring problems. Given a set of colors, these types of problems consist…”
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A Lyusternik–Graves theorem for the proximal point method
Published in Computational optimization and applications (01-07-2012)“…We consider a generalized version of the proximal point algorithm for solving the perturbed inclusion y ∈ T ( x ), where y is a perturbation element near 0 and…”
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