Results 21 to 30 of about 845,583 (297)

Anew Conjugate Gradient Algorithm Based on The (Dai-Liao) Conjugate Gradient Method

open access: yesTikrit Journal of Pure Science, 2020
In this paper we can derive a new search direction of conjugating gradient method associated with (Dai-Liao method ) the new algorithm becomes converged by assuming some hypothesis.
SHAHER QAHTAN HUSSEIN   +2 more
doaj   +1 more source

A Modified Hybrid Conjugate Gradient Method for Unconstrained Optimization

open access: yesJournal of Mathematics, 2021
The nonlinear conjugate gradient algorithms are a very effective way in solving large-scale unconstrained optimization problems. Based on some famous previous conjugate gradient methods, a modified hybrid conjugate gradient method was proposed.
Minglei Fang   +3 more
doaj   +1 more source

A New Parameterized Conjugate Gradient Method based on Generalized Perry Conjugate Gradient Method

open access: yesTikrit Journal of Pure Science, 2023
A New Parameterized Conjugate Gradient Method based on Generalized Perry Conjugate Gradient Method is proposed to be based on Perry's idea, the descent condition and the global convergent is proven under Wolfe condition.
Khalil K. Abbo, Nazar K. Hussein
doaj   +1 more source

Parallel conjugate gradient method

open access: yesLietuvos Matematikos Rinkinys, 2003
We investigate a parallel version of the preconditioned conjugate gradientmethod. A scalability analysis is done for a finite difference schemewhich approximates the 3D elliptic problem.
Raimondas Čiegis, Galina Šilko
doaj   +3 more sources

Accelerated Conjugate Gradient for Second-Order Blind Signal Separation

open access: yesAcoustics, 2022
This paper proposes a new adaptive algorithm for the second-order blind signal separation (BSS) problem with convolutive mixtures by utilising a combination of an accelerated gradient and a conjugate gradient method.
Hai Huyen Dam, Sven Nordholm
doaj   +1 more source

Moving force identification based on modified preconditioned conjugate gradient method [PDF]

open access: yes, 2018
This paper develops a modified preconditioned conjugate gradient (M-PCG) method for moving force identification (MFI) by improving the conjugate gradient (CG) and preconditioned conjugate gradient (PCG) methods with a modified Gram-Schmidt algorithm. The
Zhen Chen   +5 more
core   +1 more source

A Conjugate Gradient-Based BPTT-Like Optimal Control Algorithm With Vehicle Dynamics Control Application [PDF]

open access: yes, 2010
The paper presents a gradient-based algorithm for optimal control of nonlinear multivariable systems with control and state vectors constraints. The algorithm has a backward-in-time recurrent structure similar to the backpropagation-through-time ...
Kolmanovsky, Ilya V.   +10 more
core   +1 more source

A Multipreconditioned Conjugate Gradient Algorithm [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2006
We propose a generalization of the conjugate gradient method that uses multiple preconditioners, combining them automatically in an optimal way. The algorithm may be useful for domain decomposition techniques and other problems in which the need for more than one preconditioner arises naturally.
Robert Bridson, Chen Greif
openaire   +2 more sources

Conjugate gradient algorithms for conic functions [PDF]

open access: yes, 1986
summary:The paper contains a description and an analysis of two modifications of the conjugate gradient method for unconstrained minimization which find a minimum of the conic function after a finite number of steps.
Lukšan, Ladislav
core   +1 more source

A Penalized Linear and Nonlinear Combined Conjugate Gradient Method for the Reconstruction of Fluorescence Molecular Tomography

open access: yesInternational Journal of Biomedical Imaging, 2007
Conjugate gradient method is verified to be efficient for nonlinear optimization problems of large-dimension data. In this paper, a penalized linear and nonlinear combined conjugate gradient method for the reconstruction of fluorescence molecular ...
Shang Shang   +4 more
doaj   +1 more source

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