Results 31 to 40 of about 3,870 (235)

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.
June, Leong Wah, Hassan, Malik Abu
core   +1 more source

Benchmark of quantum-inspired heuristic solvers for quadratic unconstrained binary optimization

open access: yesScientific Reports, 2022
Recently, inspired by quantum annealing, many solvers specialized for unconstrained binary quadratic programming problems have been developed. For further improvement and application of these solvers, it is important to clarify the differences in their ...
Hiroki Oshiyama, Masayuki Ohzeki
doaj   +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

An Algorithm for Unconstrained Quadratically Penalized Convex Optimization [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2011
A descent algorithm, "Quasi-Quadratic Minimization with Memory" (QQMM), is proposed for unconstrained minimization of the sum, $F$, of a non-negative convex function, $V$, and a quadratic form. Such problems come up in regularized estimation in machine learning and statistics. In addition to values of $F$, QQMM requires the (sub)gradient of $V$.
openaire   +2 more sources

Robust optimisation of unconstrained binary quadratic problems

open access: yesInternational Journal of Operational Research, 2019
In this paper we focus on the unconstrained binary quadratic optimization model, maximize x^t Qx, x binary, and consider the problem of identifying optimal solutions that are robust with respect to perturbations in the Q matrix.. We are motivated to find robust, or stable, solutions because of the uncertainty inherent in the big data origins of Q and ...
Mark W. Lewis   +2 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

A modified quadratic hybridization of Polak-Ribiere-Polyak and Fletcher-Reeves conjugate gradient method for unconstrained optimization problems [PDF]

open access: yes, 2017
This article presents a modified quadratic hybridization of the Polak–Ribiere–Polyak and Fletcher–Reeves conjugate gradient method for solving unconstrained optimization problems.
M.V. Thuto, Sindhu Narayanan, Pro Kaelo
core   +2 more sources

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

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