Title
Improving spanning trees by upgrading nodes
Abstract
We study bottleneck constrained network upgrading problems. We are given an edge weighted graph G = (V, E) where node upsilon is an element of V can be upgraded at a cost of c(upsilon), This upgrade reduces the delay of each link emanating from v. The goal is to find a minimum cost set of nodes to be upgraded so that the resulting network has good performance. The performance is measured by the bottleneck weight of a minimum spanning tree. We give a polynomial time approximation algorithm with logarithmic performance guarantee, which is tight within a small constant factor as shown by our hardness results. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Year
DOI
Venue
1999
10.1016/S0304-3975(99)00030-4
ICALP
Keywords
DocType
Volume
minimum spanning tree,spanning tree,polynomial time
Journal
221
Issue
ISSN
ISBN
1-2
0304-3975
3-540-63165-8
Citations 
PageRank 
References 
15
0.92
17
Authors
10
Name
Order
Citations
PageRank
Sven O. Krumke130836.62
Madhav Marathe22775262.17
Hartmut Noltemeier339897.45
R. Ravi42898275.40
S. S. Ravi52259227.21
Ravi Sundaram676272.13
Hans-christoph Wirth714615.90
SO Krumke8342.76
MV Marathe91279.05
HC Wirth10201.91