Results 31 to 40 of about 43,906 (221)

Modifications of the Limited Memory BFGS Algorithm for Large-scale Nonlinear Optimization [PDF]

open access: yes, 2005
In this paper we present two new numerical methods for unconstrained large-scale optimization. These methods apply update formulae, which are derived by considering different techniques of approximating the objective function.
Hassan, Malik Abu, June, Leong Wah
core   +1 more source

Quantum Algorithms for Mixed Binary Optimization Applied to Transaction Settlement

open access: yesIEEE Transactions on Quantum Engineering, 2021
In this article, we extend variational quantum optimization algorithms for quadratic unconstrained binary optimization problems to the class of mixed binary optimization problems.
Lee Braine   +3 more
doaj   +1 more source

A Multilevel Algorithm for Large Unconstrained Binary Quadratic Optimization [PDF]

open access: yes, 2012
The unconstrained binary quadratic programming (UBQP) problem is a general NP-hard problem with various applications. In this paper, we present a multilevel algorithm designed to approximate large UBQP instances. The proposed multilevel algorithm is composed of a backbone-based coarsening phase, an asymmetric uncoarsening phase and a memetic refinement
Wang, Yang   +3 more
openaire   +2 more sources

A novel hybrid backtracking search optimization algorithm for continuous function optimization [PDF]

open access: yesDecision Science Letters, 2019
Stochastic optimization algorithm provides a robust and efficient approach for solving complex real world problems. Backtracking Search Optimization Algorithm (BSA) is a new stochastic evolutionary algorithm and the aim of this paper is to introduce a ...
Sukanta Nama, Apu Kumar Saha
doaj   +1 more source

Approach to development of algorithms of Newtonian methods of unconstrained optimization, their software implementation and benchmarking [PDF]

open access: yesКомпьютерные исследования и моделирование, 2013
The approach to increase efficiency of Gill and Murray's algorithm of Newtonian methods of unconstrained optimization with step adjustment creation is offered, rests on Choleskys factorization.
Gennadiy Anatolievich Zelenkov   +1 more
doaj   +1 more source

Exploiting Hardware and Software Advances for Quadratic Models of Wind Farm Layout Optimization

open access: yesIEEE Access, 2022
A key aspect of the design of a wind farm is the wind farm layout optimization (WFLO) problem: given a wind farm site and information about the wind patterns, the problem is to decide the location of individual wind turbines to maximize energy production
Arik Senderovich   +3 more
doaj   +1 more source

A New Spectral Conjugate Gradient method for solving unconstrained Optimization problems [PDF]

open access: yesمجلة ابحاث كلية التربية الاساسية, 2022
The spectral conjugate gradient methods are fascinating, and it has been shown that they are useful for strictly convex quadratic reduction when used properly.
أسامة محمد طاهر ویس   +2 more
doaj   +1 more source

Multiplicative Noise Removal Using Variable Splitting and Constrained Optimization [PDF]

open access: yes, 2010
Multiplicative noise (also known as speckle noise) models are central to the study of coherent imaging systems, such as synthetic aperture radar and sonar, and ultrasound and laser imaging.
Bioucas-Dias, José M.   +1 more
core   +3 more sources

On limited-memory quasi-Newton methods for minimizing a quadratic function

open access: yes, 2018
The main focus in this paper is exact linesearch methods for minimizing a quadratic function whose Hessian is positive definite. We give two classes of limited-memory quasi-Newton Hessian approximations that generate search directions parallel to those ...
Ek, David, Forsgren, Anders
core   +1 more source

Computationally Efficient Trajectory Optimization for Linear Control Systems with Input and State Constraints

open access: yes, 2012
This paper presents a trajectory generation method that optimizes a quadratic cost functional with respect to linear system dynamics and to linear input and state constraints.
Kennel, Ralph, Stumper, Jean-Francois
core   +1 more source

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