An assignment-based decomposition approach for the vehicle routing
In the context of the Vehicle Routing Problem with Backhauls, which involves delivering to linehaul and picking up from backhaul customers, we propose a novel mathematical model that can decompose the main problem into three sub-problems: two Open Vehicle Routing Problems and one Assignment Problem. In our proposed model, Open Vehicle Routing ...
Determining the problem type
"The vehicle routing problem with time windows and temporal dependencies" (Dohn et al., 2011) DOI ... Every Vehicle routing is an assignment problem. Basically, VRP is about the combination of assignments and knapsack. You assign a vehicle for each node and a knapsack for the commodity carried for each vehicle. From your description, besides ...
PDF Assignment Problem and Vehicle Routing Problem for an Improvement of
research. First, assignment problem is employed and capacitated vehicle routing problem with time window (VRPTW) is used later. The assignment problem clusters 377 branches into 3 groups each group belongs to each DC and VRPTW produces routes for each DC daily. The assignment problem may be defined mathematically as follows.
Vehicle assignment in site-dependent vehicle routing problems with
In this paper we consider the problem of vehicle assignment in heterogeneous fleet site-dependent Vehicle Routing Problems (VRP) with split deliveries. In such VRP problems vehicles can have different capacities, fixed and travel costs, and site-dependency constraints limit for every customer a set of vehicles, which can serve it. The Vehicle Assignment Problem (VAP) arises in heuristic and ...
PDF Quadratic Programming for the Vehicle Routing Problem
The truck dispatching problem, Management Science 6: 80 91. [3] Laporte G., 2007. What you should know about the vehicle routing problem. Naval Research Logistics 54: 811-819. [4] Marinakis Y., Migdalas A., and Pardalos P. M., 2007. A new bilevel formulation for the ve-hicle routing problem and a solution method using a genetic algorithm.
Chapter 1 Vehicle routing
To motivate the generalized assignment problem approximation, first note that the vehicle routing problem can be represented exactly by the following nonlinear generalized assignment problem. Defining 1, if point i (customer or depot) is visited by vehicle k Yik = O, otherwise and y~ = (y0~ . . . . . ynk), the vehicle routing problem is defined ...
PDF The Robust Vehicle Routing Problem with Time Window Assignments
Keywords: vehicle routing † time window assignment † robust optimization † uncertain travel times 1. Introduction In the vehicle routing problem (VRP) with time win-dows, service time windows are typically an input. In practice, however, there are many cases in which time windows are imposed by the service provider or are
A Clustering Algorithm for Solving the Vehicle Routing Assignment
The problem is composed of two sub-problems: The first sub-problem is an assignment problem where both the vehicles that will be used as well as the customers assigned to each vehicle are determined.
The discrete time window assignment vehicle routing problem
The time window assignment vehicle routing problem (TWAVRP) was recently introduced by Spliet and Gabor (2014).This problem can be viewed as a two-stage stochastic optimization problem (see Birge and Louveaux, 1997).Given a set of customers to be visited on the same day regularly during some period of time (e.g., a season), the TWAVRP consists of assigning in the first stage a time window to ...
Vehicle assignment in site-dependent vehicle routing problems with
In this paper, we develop a new heuristic for solving the site-dependent vehicle routing problem and apply it to a set of 23 test problems (six problems have appeared in the literature, 12 ...
COMMENTS
In the context of the Vehicle Routing Problem with Backhauls, which involves delivering to linehaul and picking up from backhaul customers, we propose a novel mathematical model that can decompose the main problem into three sub-problems: two Open Vehicle Routing Problems and one Assignment Problem. In our proposed model, Open Vehicle Routing ...
"The vehicle routing problem with time windows and temporal dependencies" (Dohn et al., 2011) DOI ... Every Vehicle routing is an assignment problem. Basically, VRP is about the combination of assignments and knapsack. You assign a vehicle for each node and a knapsack for the commodity carried for each vehicle. From your description, besides ...
research. First, assignment problem is employed and capacitated vehicle routing problem with time window (VRPTW) is used later. The assignment problem clusters 377 branches into 3 groups each group belongs to each DC and VRPTW produces routes for each DC daily. The assignment problem may be defined mathematically as follows.
In this paper we consider the problem of vehicle assignment in heterogeneous fleet site-dependent Vehicle Routing Problems (VRP) with split deliveries. In such VRP problems vehicles can have different capacities, fixed and travel costs, and site-dependency constraints limit for every customer a set of vehicles, which can serve it. The Vehicle Assignment Problem (VAP) arises in heuristic and ...
The truck dispatching problem, Management Science 6: 80 91. [3] Laporte G., 2007. What you should know about the vehicle routing problem. Naval Research Logistics 54: 811-819. [4] Marinakis Y., Migdalas A., and Pardalos P. M., 2007. A new bilevel formulation for the ve-hicle routing problem and a solution method using a genetic algorithm.
To motivate the generalized assignment problem approximation, first note that the vehicle routing problem can be represented exactly by the following nonlinear generalized assignment problem. Defining 1, if point i (customer or depot) is visited by vehicle k Yik = O, otherwise and y~ = (y0~ . . . . . ynk), the vehicle routing problem is defined ...
Keywords: vehicle routing † time window assignment † robust optimization † uncertain travel times 1. Introduction In the vehicle routing problem (VRP) with time win-dows, service time windows are typically an input. In practice, however, there are many cases in which time windows are imposed by the service provider or are
The problem is composed of two sub-problems: The first sub-problem is an assignment problem where both the vehicles that will be used as well as the customers assigned to each vehicle are determined.
The time window assignment vehicle routing problem (TWAVRP) was recently introduced by Spliet and Gabor (2014).This problem can be viewed as a two-stage stochastic optimization problem (see Birge and Louveaux, 1997).Given a set of customers to be visited on the same day regularly during some period of time (e.g., a season), the TWAVRP consists of assigning in the first stage a time window to ...
In this paper, we develop a new heuristic for solving the site-dependent vehicle routing problem and apply it to a set of 23 test problems (six problems have appeared in the literature, 12 ...