Results 11 to 20 of about 107,892 (239)

The pyramidal capacitated vehicle routing problem [PDF]

open access: yesEuropean Journal of Operational Research, 2010
This paper introduces the pyramidal capacitated vehicle routing problem (PCVRP) as a restricted version of the capacitated vehicle routing problem (CVRP). In the PCVRP each route is required to be pyramidal in a sense generalized from the pyramidal traveling salesman problem (PTSP).
Lysgaard, Jens
openaire   +9 more sources

Combining a hierarchical task network planner with a constraint satisfaction solver for assembly operations involving routing problems in a multi-robot context [PDF]

open access: yesInternational Journal of Advanced Robotic Systems, 2018
This work addresses the combination of a symbolic hierarchical task network planner and a constraint satisfaction solver for the vehicle routing problem in a multi-robot context for structure assembly operations.
Jorge Muñoz-Morera   +3 more
doaj   +2 more sources

Vehicle Routing Problem Models

open access: yesPromet (Zagreb), 2004
The Vehicle Routing Problem cannot always be solved exactly,so that in actual application this problem is solved heuristically.The work describes the concept of several concrete VRPmodels with simplified initial conditions (all vehicles are ofequal ...
Tonči Carić   +2 more
doaj   +3 more sources

Hierarchical vehicle routing problems [PDF]

open access: greenNetworks, 1984
AbstractHierarchical vehicle routing problems, in which the decision to acquire a number of vehicles has to be based on imperfect (probabilistic) information about the location of future customers, allow a natural formulation as two‐stage stochastic programming problems, where the objective is to minimize the sum of the acquisition cost and the length ...
Alberto Marchetti-Spaccamela   +2 more
openalex   +5 more sources

A Survey of Vehicle Routing Problem [PDF]

open access: yesMATEC Web of Conferences, 2017
In recent years, vehicle routing problem (VRP) has become an important content in logistics management research, and has been widely used in transportation system, logistics distribution system and express delivery system.
Cao Wujun, Yang Wenshui
doaj   +3 more sources

A Computational Study of Genetic Crossover Operators for Multi-Objective Vehicle Routing Problem with Soft Time Windows [PDF]

open access: green, 2008
The article describes an investigation of the effectiveness of genetic algorithms for multi-objective combinatorial optimization (MOCO) by presenting an application for the vehicle routing problem with soft time windows.
Martin Josef Geiger
openalex   +5 more sources

SavingsAnts for the Vehicle Routing Problem [PDF]

open access: yes, 2002
In this paper we propose a hybrid approach for solving vehicle routing problems. The main idea is to combine an Ant System (AS) with a problem specific constructive heuristic, namely the well known Savings algorithm. This differs from previous approaches, where the subordinate heuristic was the Nearest Neighbor algorithm initially proposed for the TSP.
Doerner, Karl   +5 more
openaire   +5 more sources

Vehicle routing problems with multiple trips [PDF]

open access: yesAnnals of Operations Research, 2016
This paper presents a survey on the Multi-Trip Vehicle Routing Problem (MTVRP) and onrelated routing problems where vehicles are allowed to perform multiple trips. The first part ofthe paper focuses on the MTVRP. It gives an unified view on mathematical formulations andsurveys exact and heuristic approaches.
Dominique Feillet   +3 more
openaire   +6 more sources

To the classification of vehicles routing problems

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2020
The essence of the problems considered consists in developing routes for a group of heterogeneous vehicles based in a specific place or places (depot) that have to deliver goods to customers according to their volume of orders.
Л. Ф. Гуляницький   +1 more
doaj   +1 more source

Vehicle Routing Problem with Stochastic Demands

open access: yesCommunications, 2003
In the introductory section of this paper there is a view of several types of stochastic vehicle routing problems. In the second section of the paper the vehicle routing problem with stochastic demands is described.
Vaclav Korenar
doaj   +1 more source

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