Results 21 to 30 of about 224,803 (288)

An Exact Algorithm for Minimum Vertex Cover Problem

open access: yesMathematics, 2019
In this paper, we propose a branch-and-bound algorithm to solve exactly the minimum vertex cover (MVC) problem. Since a tight lower bound for MVC has a significant influence on the efficiency of a branch-and-bound algorithm, we define two novel lower ...
Luzhi Wang   +3 more
doaj   +1 more source

Anomalies in parallel branch-and-bound algorithms [PDF]

open access: yesCommunications of the ACM, 1984
We consider the effects of parallelizing branch-and-bound algorithms by expanding several live nodes simultaneously. It is shown that it is quite possible for a parallel branch-and-bound algorithm using n 2 processors to take more time than one using n 1 processors, even though n ...
Lai, Ten-Hwang, Sahni, Sartaj
openaire   +2 more sources

An Efficient Outer Space Algorithm for Generalized Linear Multiplicative Programming Problem

open access: yesIEEE Access, 2020
Base on the outer space search and the branch-and-bound framework, this paper presents an efficient outer space branch-and-bound algorithm for globally solving generalized linear multiplicative programming problem.
Hongwei Jiao   +4 more
doaj   +1 more source

Enhanced Branch and Bound Algorithm: Minimizing Subproblem Complexity in Power Dispatch

open access: yesIEEE Access
The Branch and Bound (BB) algorithm, while ensuring optimality, often encounters performance bottlenecks, characterized by slow execution and high computational overhead, especially when dealing with intricate or extensive problem instances (NP-Hard ...
Elif Cesur   +2 more
doaj   +1 more source

Single Machine Problem with Multi-Rate-Modifying Activities under a Time-Dependent Deterioration

open access: yesJournal of Applied Mathematics, 2013
The single machine scheduling problem with multi-rate-modifying activities under a time-dependent deterioration to minimize makespan is studied. After examining the characteristics of the problem, a number of properties and a lower bound are proposed.
M. Huang   +5 more
doaj   +1 more source

Optimization of Export Container Relocation Operations Based on Policy Search Algorithm [PDF]

open access: yesJisuanji gongcheng
With the rapid development of port logistics and the increasing prevalence of automated container terminals, the issue of relocating export containers at specific locations in yard bays has garnered significant attention.
CHEN Yifei, HAN Xiaolong, NIU Yafan
doaj   +1 more source

Influence of Lipschitz bounds on the speed of global optimization

open access: yesTechnological and Economic Development of Economy, 2012
Global optimization methods based on Lipschitz bounds have been analyzed and applied widely to solve various optimization problems. In this paper a bound for Lipschitz function is proposed, which is computed using function values at the vertices of a ...
Remigijus Paulavičius   +1 more
doaj   +1 more source

Bound-intersection detection for multiple-symbol differential unitary space-time modulation [PDF]

open access: yes, 2005
This paper considers multiple-symbol differential detection (MSD) of differential unitary space-time modulation (DUSTM) over multiple-antenna systems. We derive a novel exact maximum-likelihood (ML) detector, called the bound-intersection detector (BID),
Cui, Tao, Tellambura, Chinthananda
core   +1 more source

An Effective Branch and Bound Algorithm for Minimax Linear Fractional Programming

open access: yesJournal of Applied Mathematics, 2014
An effective branch and bound algorithm is proposed for globally solving minimax linear fractional programming problem (MLFP). In this algorithm, the lower bounds are computed during the branch and bound search by solving a sequence of linear relaxation ...
Hong-Wei Jiao   +2 more
doaj   +1 more source

Scheduling of Software Test to Minimize the Total Completion Time

open access: yesMathematics, 2023
This paper investigates a single-machine scheduling problem of a software test with shared common setup operations. Each job has a corresponding set of setup operations, and the job cannot be executed unless its setups are completed. If two jobs have the
Man-Ting Chao, Bertrand M. T. Lin
doaj   +1 more source

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