Results 11 to 20 of about 2,364,396 (151)

Bounds for Binary Integer Programming via Unconstrained Quadratic Pseudo-Boolean Optimization

open access: yesMathematics
This research proposes a method for finding bounds in binary integer programming (BIP) and quadratic binary integer programming (QBIP). Our approach utilizes a max-flow technique within the framework of quadratic pseudo-Boolean optimization.
Sirilak Phonin, Chulin Likasiri
doaj   +2 more sources

A New Augmented Lagrangian Method for Equality Constrained Optimization with Simple Unconstrained Subproblem [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2017
We propose a new method for equality constrained optimization based on augmented Lagrangian method. We construct an unconstrained subproblem by adding an adaptive quadratic term to the quadratic model of augmented Lagrangian function.
Hao Zhang, Qin Ni
doaj   +2 more sources

An Improved Adaptive Trust-Region Method for Unconstrained Optimization [PDF]

open access: yesMathematical Modelling and Analysis, 2014
In this study, we propose a trust-region-based procedure to solve unconstrained optimization problems that take advantage of the nonmonotone technique to introduce an efficient adaptive radius strategy.
Hamid Esmaeili, Morteza Kimiaei
doaj   +2 more sources

Diversifying Investments and Maximizing Sharpe Ratio: A Novel Quadratic Unconstrained Binary Optimization Formulation

open access: yesQuantum Reports
The optimization of investment portfolios represents a pivotal task within the field of financial economics. Its objective is to identify asset combinations that meet specified criteria for return and risk.
Mirko Mattesi   +6 more
doaj   +2 more sources

Unconstrained formulation of standard quadratic optimization problems [PDF]

open access: yes, 2012
A standard quadratic optimization problem (StQP) consists of finding the largest or smallest value of a (possibly indefinite) quadratic form over the standard simplex which is the intersection of a hyperplane with the positive orthant.
PALAGI, Laura   +2 more
core   +2 more sources

HUBO formulations for solving the eigenvalue problem

open access: yesResults in Control and Optimization, 2023
Solving the eigenvalue problem is particularly important in almost all fields of science and engineering. With the development of quantum computers, multiple algorithms have been proposed for this purpose.
Kyungtaek Jun, Hyunju Lee
doaj   +1 more source

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

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   +1 more source

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

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