Results 21 to 30 of about 140,088 (167)

Branch Less, Cut More and Schedule Jobs with Release and Delivery Times on Uniform Machines

open access: yesMathematics, 2021
We consider the problem of scheduling n jobs with identical processing times and given release as well as delivery times on m uniform machines. The goal is to minimize the makespan, i.e., the maximum full completion time of any job.
Nodari Vakhania, Frank Werner
doaj   +1 more source

An exact algorithm for design of content delivery networks in MPLS environment

open access: yesJournal of Telecommunications and Information Technology, 2004
Content delivery network (CDN) is an efficient and inexpensive method to improve Internet service quality. In this paper we formulate an optimisation problem of replica location in a CDN using MPLS techniques.
Krzysztof Walkowiak
doaj   +1 more source

A branch-and-cut algorithm for the target visitation problem

open access: yesEURO Journal on Computational Optimization, 2019
In this paper, we consider the target visitation problem (TVP) which arises in the context of disaster treatment. Mathematically speaking, the problem is concerned with finding a route to visit a set of targets starting from and returning to some base ...
Achim Hildenbrandt
doaj   +1 more source

Improved Sample Complexity Bounds for Branch-and-Cut

open access: yes, 2021
Branch-and-cut is the most widely used algorithm for solving integer programs, employed by commercial solvers like CPLEX and Gurobi. Branch-and-cut has a wide variety of tunable parameters that have a huge impact on the size of the search tree that it builds, but are challenging to tune by hand.
Balcan, Maria-Florina   +3 more
openaire   +4 more sources

The massless single off-shell scalar box integral — branch cut structure and all-order epsilon expansion

open access: yesJournal of High Energy Physics, 2023
We investigate the single off-shell scalar box integral with massless internal lines in dimensional regularization. A special emphasis is given to higher orders in the dimensional regularization parameter epsilon, its branch cut structure, and kinematic ...
Juliane Haug, Fabian Wunder
doaj   +1 more source

The Independence Number Conditions for 2-Factors of a Claw-Free Graph

open access: yesAxioms, 2022
In 2014, some scholars showed that every 2-connected claw-free graph G with independence number α(G)≤3 is Hamiltonian with one exception of family of graphs.
Wanpeng Lei, Liming Xiong, Jun Yin
doaj   +1 more source

Modeling Flow and Pressure Fields in Porous Media with High Conductivity Flow Channels and Smart Placement of Branch Cuts for Variant and Invariant Complex Potentials

open access: yesFluids, 2019
A long overdue distinction between so-called variant and invariant complex potentials is proposed here for the first time. Invariant complex potentials describe physical flows where a switch of the real and imaginary parts of the function will still ...
Aadi Khanal, Ruud Weijermars
doaj   +1 more source

A Branch-and-Cut algorithm for graph coloring

open access: yesDiscrete Applied Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Méndez-Díaz, I., Zabala, P.
openaire   +4 more sources

Efficient Semidefinite Branch-and-Cut for MAP-MRF Inference [PDF]

open access: yesInternational Journal of Computer Vision, 2015
We propose a Branch-and-Cut (B&C) method for solving general MAP-MRF inference problems. The core of our method is a very efficient bounding procedure, which combines scalable semidefinite programming (SDP) and a cutting-plane method for seeking violated constraints.
Wang, P.   +3 more
openaire   +3 more sources

A Branch-and-Cut Algorithm for Submodular Interdiction Games

open access: yesINFORMS Journal on Computing, 2022
Many relevant applications from diverse areas such as marketing, wildlife conservation, and defending critical infrastructure can be modeled as interdiction games. In this work, we introduce interdiction games whose objective is a monotone and submodular set function.
Kübra Tanınmış, Markus Sinnl
openaire   +2 more sources

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