Results 21 to 30 of about 19,980 (297)

A spectral conjugate gradient method for unconstrained optimization [PDF]

open access: yes, 2015
A family of scaled conjugate gradient algorithms for large-scale unconstrained minimization is defined. The Ferry, the Polak-Ribiere and the Fletcher-Reeves formulae are compared using a spectral scaling derived from Raydan's spectral gradient ...
Birgin, EG, Martinez, JM
core   +1 more source

A clustering particle swarm optimizer for dynamic optimization [PDF]

open access: yes, 2009
This article is posted here with permission of the IEEE - Copyright @ 2009 IEEEIn the real world, many applications are nonstationary optimization problems.
Yang, S   +5 more
core   +1 more source

Nonlinear Conjugate Gradient Methods with Wolfe Type Line Search

open access: yesAbstract and Applied Analysis, 2013
Nonlinear conjugate gradient method is one of the useful methods for unconstrained optimization problems. In this paper, we consider three kinds of nonlinear conjugate gradient methods with Wolfe type line search for unstrained optimization problems ...
Yuan-Yuan Chen, Shou-Qiang Du
doaj   +1 more source

Goal seeking Quadratic Unconstrained Binary Optimization

open access: yesResults in Control and Optimization, 2022
The Quadratic Unconstrained Binary Optimization (QUBO) modeling and solution framework is a requirement for quantum and digital annealers. However optimality for QUBO problems of any practical size is extremely difficult to achieve.
Amit Verma, Mark Lewis
doaj   +1 more source

An alternative globalization strategy for unconstrained optimization [PDF]

open access: yes, 2018
We propose a new globalization strategy that can be used in unconstrained optimization algorithms to support rapid convergence from remote starting points.
Öztoprak, Figen
core   +2 more sources

An ensemble symbiosis organisms search algorithm and its application to real world problems [PDF]

open access: yesDecision Science Letters, 2017
In this study, an ensemble algorithm has been proposed, called Quasi-Oppositional Symbiosis Organisms Search (QOSOS) algorithms, by incorporating the quasi-oppositional based learning (QOBL) strategy into the newly proposed Symbiosis Organisms Search ...
Sukanta Nama, Apu Kumar Saha
doaj   +1 more source

On the design of optimization strategies based on global response surface approximation models [PDF]

open access: yes, 2005
Striking the correct balance between global exploration of search spaces and local exploitation of promising basins of attraction is one of the principal concerns in the design of global optimization algorithms.
András Sóbester   +5 more
core   +1 more source

Global convergence properties of a Dai-Liao-type CGM for unconstrained optimization

open access: yesRecent Advances in Natural Sciences
A popular optimization technique called the conjugate gradient method (CGM) is renowned for its effectiveness in addressing problems involving unconstrained optimization.
Oluwaseun Biodun Onuoha
doaj   +1 more source

A Class of Weighted Low Rank Approximation of the Positive Semidefinite Hankel Matrix

open access: yesJournal of Applied Mathematics, 2015
We consider the weighted low rank approximation of the positive semidefinite Hankel matrix problem arising in signal processing. By using the Vandermonde representation, we firstly transform the problem into an unconstrained optimization problem and then
Jianchao Bai   +3 more
doaj   +1 more source

A modified three terms PRP conjugate gradient method

open access: yesJournal of Hebei University of Science and Technology, 2018
In order to effectively solve a class of large-scale unconstrained optimization problems and overcome the shortcomings of other algorithms, such as complex algorithms, large memory and computer programming difficulties, a new search direction is defined,
Songhua WANG   +3 more
doaj   +1 more source

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