Title
The capacitated traveling salesman problem with pickups and deliveries on a tree
Abstract
The Capacitated Traveling Salesman Problem with Pickups and Deliveries (CTSP-PD)[1] can be defined on an undirected graph T=(V,E), where V is a set of n vertices and E is a set of edges. A nonnegative weight d(e) is associated with each edge e∈ E to indicate its length. Each vertex is either a pickup point, a delivery point, or a transient point. At each pickup point is a load of unit size that can be shipped to any delivery point which requests a load of unit size. Hence we can use a(v)=1,0,–1 to indicate v to be a pickup, a transient, or a delivery point, and a(v) is referred to as the volume of v. The total volumes for pickups and for deliveries are usually assumed to be balanced, i.e., $\sum_{v\in {\it V}}{\it a}({\it v})=0$, which implies that all loads in pickup points must be shipped to delivery points [1]. Among V, one particular vertex r ∈ V is designated as a depot, at which a vehicle of limited capacity of k ≥ 1 starts and ends. The problem aims to determine a minimum length feasible route that picks up and delivers all loads without violating the vehicle capacity.
Year
DOI
Venue
2005
10.1007/11602613_105
ISAAC
Keywords
Field
DocType
limited capacity,particular vertex,delivery point,n vertex,salesman problem,transient point,minimum length,pickup point,unit size,vehicle capacity,traveling salesman problem
Approximation algorithm,Delivery point,Discrete mathematics,Graph,Combinatorics,Tree (graph theory),Vertex (geometry),Travelling salesman problem,Pickup,Mathematics
Conference
Volume
ISSN
ISBN
3827
0302-9743
3-540-30935-7
Citations 
PageRank 
References 
3
0.95
11
Authors
3
Name
Order
Citations
PageRank
Andrew Lim193789.78
Fan Wang21429.55
Zhou Xu3142.71