0000000000281432

AUTHOR

Thais ÁVila

showing 5 related works from this author

The stacker crane problem and the directed general routing problem

2015

[EN] This article deals with the polyhedral description and the resolution of the directed general routing problem (DGRP) and the stacker crane problem (SCP). The DGRP contains a large number of important arc and node routing problems as special cases, including the SCP. Large families of facet-defining inequalities for the DGRP are described and a branch-and-cut algorithm for these problems is presented. Extensive computational experiments over different sets of DGRP and SCP instances are included.

Mathematical optimizationDirected general routing problemStacker crane problemComputer Networks and CommunicationsStackerNode (networking)Branch-and-cut algorithmDirected graphResolution (logic)Directed rural postman problemHardware and ArchitectureRouting (electronic design automation)MATEMATICA APLICADASoftwareInformation SystemsMathematics
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A New Branch-and-Cut Algorithm for the Generalized Directed Rural Postman Problem

2016

The generalized directed rural postman problem, also known as the close-enough arc routing problem, is an arc routing problem with some interesting real-life applications, such as routing for meter reading. In this article we introduce two new formulations for this problem as well as various families of new valid inequalities that are used to design and implement a branch-and-cut algorithm. The computational results obtained on test bed instances from the literature show that this algorithm outperforms the existing exact methods

050210 logistics & transportationMathematical optimization021103 operations research05 social sciences0211 other engineering and technologiesTransportation02 engineering and technologyTravelling salesman problemClose-enough arc routing problemBranch-and-cut0502 economics and businessGeneralized rural postman problemRouting (electronic design automation)MATEMATICA APLICADABranch and cutArc routingAlgorithmAutomatic meter readingCivil and Structural EngineeringMathematics
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An ILS-Based Metaheuristic for the Stacker Crane Problem

2012

[EN] In this paper we propose a metaheuristic algorithm for the Stacker Crane Problem. This is an NP-hard arc routing problem whose name derives from the practical problem of operating a crane. Here we present a formulation and a lower bound for this problem and propose a metaheuristic algorithm based on the combination of a Multi-start and an Iterated Local Search procedures. Computational results on a large set of instances are presented.

Mathematical optimizationIterated local searchComputer scienceStackerComputerApplications_COMPUTERSINOTHERSYSTEMSMetaheuristicsUpper and lower boundsParallel metaheuristicDirected rural postman problemCombinatorial OptimizationCombinatorial optimizationLarge set (combinatorics)MATEMATICA APLICADAMetaheuristicArc routingAlgorithm
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A branch-and-cut algorithm for the Profitable Windy Rural Postman Problem

2016

[EN] In this paper we study the profitable windy rural postman problem. This is an arc routing problem with profits defined on a windy graph in which there is a profit associated with some of the edges of the graph, consisting of finding a route maximizing the difference between the total profit collected and the total cost. This problem generalizes the rural postman problem and other well-known arc routing problems and has real-life applications, mainly in snow removal operations. We propose here a formulation for the problem and study its associated polyhedron. Several families of facet-inducing inequalities are described and used in the design of a branch-and-cut procedure. The algorithm…

Arc routingMathematical optimizationInformation Systems and ManagementGeneral Computer ScienceTotal costSnow removal0211 other engineering and technologies02 engineering and technologyManagement Science and Operations ResearchIndustrial and Manufacturing EngineeringProfit (economics)Polyhedron0502 economics and businessWindy rural postman problemMathematics050210 logistics & transportation021103 operations research05 social sciencesBranch-and-cut algorithmModeling and SimulationMATEMATICA APLICADAArc routingAlgorithmBranch and cutPolyhedronProfits
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Formulations and exact algorithms for the distance-constrained generalized directed rural postman problem

2017

[EN] The generalized directed rural postman problem is an arc routing problem with many interesting real-life applications, such as routing for meter reading. In this application, a vehicle with a receiver travels through a series of neighborhoods. If the vehicle gets closer than a certain distance to a meter, the receiver is able to record the gas, water, or electricity consumption. Therefore, the vehicle does not need to traverse every street, but only a few, to get close enough to each meter. We study an extension of this problem in which a fleet of vehicles is available. Given the characteristics of the mentioned application, the vehicles have no capacities but there is a maximum distan…

90C27Mathematical optimizationControl and OptimizationTraverseManagement Science and Operations ResearchMathematicsT57-57.97Applied mathematics. Quantitative methodsSeries (mathematics)Extension (predicate logic)90C1090B99QA75.5-76.9590C57Constraint (information theory)Computational MathematicsClose-enough arc routing problemBranch-and-cutModeling and SimulationElectronic computers. Computer scienceRouting (electronic design automation)Distance constrainedMATEMATICA APLICADABranch and cutArc routingAlgorithmAutomatic meter readingMultivehicleGeneralized directed rural postman problem
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