Results 11 to 20 of about 5,853 (265)

Local Area Routes for Vehicle Routing Problems

open access: yesCoRR, 2022
We consider an approach for improving the efficiency of column generation (CG) methods for solving vehicle routing problems. We introduce Local Area (LA) route relaxations, an alternative/complement to the commonly used ng-route relaxations and Decremental State Space Relaxations (DSSR) inside of CG formulations. LA routes are a subset of ng-routes and
Udayan Mandal   +2 more
openaire   +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   +1 more source

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

A Survey of Transportation Problems

open access: yesJournal of Applied Mathematics, 2014
This paper aims at being a guide to understand the different types of transportation problems by presenting a survey of mathematical models and algorithms used to solve different types of transportation modes (ship, plane, train, bus, truck, Motorcycle ...
Ocotlán Díaz-Parra   +4 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

The k-dissimilar vehicle routing problem [PDF]

open access: yesEuropean Journal of Operational Research, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luca Talarico   +2 more
openaire   +3 more sources

Solving Close-Open Mixed Vehicle Routing Problem Using Bat Algorithm

open access: yesContemporary Mathematics and Applications (ConMathA), 2020
The purpose of this research is to solve the Close-Open Mixed Vehicle Routing Problem (COMVRP) using Bat Algorithm. COMVRP which is a combination of Close Vehicle Routing Problem or commonly known as Vehicle Routing Problem (VRP) with Open Vehicle ...
Atika Dwi Hanun Amalia   +2 more
doaj   +1 more source

The Vehicle Routing Problem with Partial Outsourcing [PDF]

open access: yesTransportation Science, 2020
This paper introduces the vehicle routing problem with partial outsourcing (VRPPO) in which a customer can be served by a single private vehicle, by a common carrier, or by both a single private vehicle and a common carrier. As such, it is a variant of the vehicle routing problem with private fleet and common carrier (VRPPC).
Annelieke C. Baller   +3 more
openaire   +3 more sources

Automobile chain maintenance parts delivery problem using an improved ant colony algorithm

open access: yesAdvances in Mechanical Engineering, 2016
The mode of automotive maintenance chain is gaining more and more attention in China because of its advantages such as the lower cost, higher speed, higher availability, and strong adaptability.
Junjie Gao   +4 more
doaj   +1 more source

On a Labeled Vehicle Routing Problem [PDF]

open access: yes, 2010
In this paper, we study the complexity and (in)approximability of the minimum label vehicle routing problem. Given a simple complete graph G = (V,E) containing a special vertex 0 called the depot and where the edges are colored (labeled), the minimum label k-vehicle routing problem consists in finding a k-vehicle routing E?, i.e. a collection of cycles
Hatem Chatti   +2 more
openaire   +1 more source

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