Results 21 to 30 of about 1,977,959 (288)

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

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

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

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

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

The Diagonal Update for Unconstrained Optimization [PDF]

open access: yesمجلة التربية والعلم, 2012
In this research we introduced a new update of the Hessian matrix or we updating only the diagonal elements of Hessian matrix, and make the non-diagonal elements always equal to zero and in this case we can preserve the sparse property so called the ...
Saad Shakir Mahmood   +2 more
doaj   +1 more source

LARGE SCALE UNCONSTRAINED OPTIMIZATION

open access: yes, 2009
This work is a survey on the methods for large scale unconstrained optimization. Besides its own theoretical importance, the growing interest in the last years in solving problems with a larger and larger number of variables are arising very frequently ...
ROMA, Massimo, Massimo Roma
core   +1 more source

Modeling and Solution Strategies for Unconstrained Stochastic Optimization Problems [PDF]

open access: yes, 1983
We review some modeling alternatives for handling risk in decision making processes for unconstrained stochastic optimization problems.
Wets, R.J.-B.
core   +2 more sources

A Nonmonotone Weighting Self-Adaptive Trust Region Algorithm for Unconstrained Nonconvex Optimization

open access: yesDiscrete Dynamics in Nature and Society, 2015
A new trust region method is presented, which combines nonmonotone line search technique, a self-adaptive update rule for the trust region radius, and the weighting technique for the ratio between the actual reduction and the predicted reduction.
Yunlong Lu   +4 more
doaj   +1 more source

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