Results 51 to 60 of about 162 (141)

On a theorem due to Crouzeix and Ferland

open access: yes
Nonsmooth analysis, Nonsmooth optimization, Generalized convexity, KT pseudoconvex problems, FJ pseudoconvex problems, Quasiconvex programming, 90C26, 26B25, 49J52,
Vsevolod Ivanov
core   +1 more source

A new optimization method based on Perry's idea through the use of the matrix power [PDF]

open access: yes, 2021
MSC 2010: 90C30, 90C26, 90C06The purpose of this paper is to present a new conjugate gradient method for solving unconstrained nonlinear optimization problems, based on Perry’s idea.
Imane Hafaidia, Noureddine Benrabia, Mourad Ghiat, Hamza Guebbai
core  

Two level hierarchical time minimizing transportation problem

open access: yes
Global optimization, concave minimization problem, time minimizing transportation problem, hierarchical optimization, 90C27, 90C26, 90C08, 90C90,
Sonia, Munish Puri
core   +1 more source

Performance Bounds For Co-/Sparse Box Constrained Signal Recovery

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
The recovery of structured signals from a few linear measurements is a central point in both compressed sensing (CS) and discrete tomography. In CS the signal structure is described by means of a low complexity model e.g. co-/sparsity.
Kuske Jan, Petra Stefania
doaj   +1 more source

About the non-convex optimization problem induced by non-positive semidefinite kernel learning

open access: yes
Support vector machine, Kernel methods, Non-convex optimization, 90C26, 49Q, 74P05, C45, C14,
Katharina Morik, Ingo Mierswa
core   +1 more source

New Hybrid Conjugate Gradient Method as a Convex Combination of PRP and RMIL+ Methods [PDF]

open access: yes
The Conjugate Gradient (CG) method is a powerful iterative approach for solving large-scale minimization problems, characterized by its simplicity, low computation cost and good convergence. In this paper, a new hybrid conjugate gradient HLB method (HLB:
BENZINE, Rachid   +3 more
core   +1 more source

A new hybrid conjugate gradient algorithm based on the Newton direction to solve unconstrained optimization problems [PDF]

open access: yes, 2023
https://doi.org/10.1007/s12190-022-01821-zIn this paper, we propose a new hybrid conjugate gradient method to solve unconstrained optimization problems. This new method is defined as a convex combination of DY and DL conjugate gradient methods.
Naima Hamel, Noureddine Benrabia, Mourad Ghiat, Hamza Guebbai
core  

Duality and optimality conditions for generalized equilibrium problems involving DC functions

open access: yes
Equilibrium problems, Duality, Fenchel conjugation, DC functions, Variational inequalities, 49N15, 58E35, 90C26, 90C46,
N. Dinh, J. Strodiot, V. Nguyen
core   +1 more source

Geometric approaches to matrix normalization and graph balancing

open access: yesForum of Mathematics, Sigma
Normal matrices, or matrices which commute with their adjoints, are of fundamental importance in pure and applied mathematics. In this paper, we study a natural functional on the space of square complex matrices whose global minimizers are normal ...
Tom Needham, Clayton Shonkwiler
doaj   +1 more source

A primal dual modified subgradient algorithm with sharp Lagrangian

open access: yes
Nonsmooth optimization, Nonconvex optimization, Duality scheme, Sharp Lagrangian, Modified subgradient algorithm, 90C26, 49M29, 49M37,
Alfredo Iusem   +2 more
core   +1 more source

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