Results 51 to 60 of about 22,651 (215)

Experimental study on the information disclosure problem: Branch-and-bound and QUBO solver

open access: yesFrontiers in Applied Mathematics and Statistics, 2023
The aim of this study was to explore the information disclosure (ID) problem, which involves selecting pairs of two sides before matching toward user-oriented optimization. This problem is known to be useful for mobility-on-demand (MoD) platforms because
Keisuke Otaki   +2 more
doaj   +1 more source

Gaussian Mean Fields Lattice Gas

open access: yes, 2018
We study rigorously a lattice gas version of the Sherrington-Kirckpatrick spin glass model. In discrete optimization literature this problem is known as Unconstrained Binary Quadratic Programming (UBQP) and it belongs to the class NP-hard.
Scoppola, Benedetto, Troiani, Alessio
core   +1 more source

Total positivity in exponential families with application to binary variables

open access: yes, 2020
We study exponential families of distributions that are multivariate totally positive of order 2 (MTP2), show that these are convex exponential families, and derive conditions for existence of the MLE.
Lauritzen, Steffen   +2 more
core   +1 more source

Ortalama-varyans portföy optimizasyonunda genetik algoritma uygulamaları üzerine bir literatür araştırması [PDF]

open access: yes, 2017
Mean-variance portfolio optimization model, introduced by Markowitz, provides a fundamental answer to the problem of portfolio management. This model seeks an efficient frontier with the best trade-offs between two conflicting objectives of maximizing ...
Akyer, Hasan   +3 more
core   +2 more sources

Eine Heuristik für quadratische 0-1-Probleme [PDF]

open access: yes, 2008
Eine neue Modellformulierung für kombinatorische Optimierungsprobleme wird vorgestellt. Auf der Grundlage des quadratischen 0-1-Problems ohne Nebenbedingungen wird ein vorteilhafter Typ kombinatorischer Optimierungsprobleme eingeführt.
Forster, Matthias
core   +1 more source

Particle algorithms for optimization on binary spaces

open access: yes, 2011
We discuss a unified approach to stochastic optimization of pseudo-Boolean objective functions based on particle methods, including the cross-entropy method and simulated annealing as special cases.
Schäfer, Christian
core   +2 more sources

Multi-Objective Optimization Technique Based on QUBO and an Ising Machine

open access: yesIEEE Access
With an increase in the complexity of society, solving multi-objective optimization problems (MOPs) has become crucial. In this study, we introduced a novel method called “quadratic unconstrained binary optimization based on the weighted normal ...
Hiroshi Ikeda, Takashi Yamazaki
doaj   +1 more source

Prime factorization using quantum annealing and computational algebraic geometry

open access: yes, 2016
We investigate prime factorization from two perspectives: quantum annealing and computational algebraic geometry, specifically Gr\"obner bases. We present a novel scalable algorithm which combines the two approaches and leads to the factorization of all ...
Alghassi, Hedayat, Dridi, Raouf
core   +1 more source

A Novel Contact‐Implicit Trajectory Optimization Framework for Quadruped Locomotion without Fixed Contact Sequences

open access: yesAdvanced Intelligent Systems, EarlyView.
Legged robots have advanced in environmental interaction through contact, but most works rely on fixed contact sequences. This work presents a new method based on an indirect optimization method for legged robots to automatically generate contact sequences for complex movements.
Yaowei Chen, Jie Zhang, Ming Lyu
wiley   +1 more source

Portfolio selection problems in practice: a comparison between linear and quadratic optimization models

open access: yes, 2010
Several portfolio selection models take into account practical limitations on the number of assets to include and on their weights in the portfolio.
A Fernández   +47 more
core   +1 more source

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