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Author, Editor(s)
Author(s):
Althaus, Ernst
Funke, Stefan
Har-Peled, Sariel
Könemann, Jochen
Ramos, Edgar A.
Skutella, Martin		dblp
dblp
dblp
dblp
dblp
dblp
Not MPG Author(s):
Har-Peled, Sariel
Könemann, Jochen
Ramos, Edgar A.

BibTeX cite key*:

AFHKRS05

Title

Title*:

Approximating k-Hop Minimum-Spanning Trees

Journal

Journal Title*:

Operations Research Letters
Journal's URL:

http://www.sciencedirect.com/science/journal/01676377

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for the article:


Language:

English

Publisher

Publisher's
Name:

Elsevier
Publisher's URL:

http://www.elsevier.com

Publisher's
Address:

Amsterdam, The Netherlands
ISSN:

0167-6377

Vol, No, pp, Date

Volume*:

33
Number:

2

Publishing Date:

March 2005

Pages*:

115-120
Number of
VG Pages:


Page Start:


Page End:


Sequence Number:


DOI:


Note, Abstract, ©

Note:


(LaTeX) Abstract:

In this paper we consider the problem of computing minimum-cost spanning trees with depth restrictions. Specifically, we are given an $n$-node complete graph $G$, a metric cost-function $c$ on its edges, and an integer $k\geq 1$. The goal in the minimum-cost $k$-hop spanning tree problem is to compute a spanning tree $T$ in $G$ of minimum total cost such that the longest root-leaf-path in the tree has at most $k$ edges.

Our main result is an algorithm that computes a tree of depth at most $k$ and total expected cost $O(\log n)$ times that of a minimum-cost $k$-hop spanning-tree. The result is based upon earlier work on metric space approximation due to Fakcharoenphol et al.[FRT03] and Bartal [Bart96,Bart98]. In particular we show that the problem can be solved exactly in polynomial time when the cost metric $c$ is induced by a so-called hierarchically well-separated tree.

URL for the Abstract:


Categories,
Keywords:

Operations Research, Combinatorial Optimization

HyperLinks / References / URLs:


Copyright Message:


Personal Comments:


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Access Level:

Intranet

Correlation
MPG Unit:
Max-Planck-Institut für Informatik
MPG Subunit:
Algorithms and Complexity Group
Appearance:
MPII WWW Server, MPII FTP Server, MPG publications list, university publications list, working group publication list, Fachbeirat, VG Wort


BibTeX Entry:

@ARTICLE{AFHKRS05,
AUTHOR = {Althaus, Ernst and Funke, Stefan and Har-Peled, Sariel and K{\"o}nemann, Jochen and Ramos, Edgar A. and Skutella, Martin},
 TITLE = {Approximating k-Hop Minimum-Spanning Trees},
 JOURNAL = {Operations Research Letters},
 PUBLISHER = {Elsevier},
 YEAR = {2005},
 NUMBER = {2},
 VOLUME = {33},
 PAGES = {115--120},
 ADDRESS = {Amsterdam, The Netherlands},
 MONTH = {March},
 ISBN = {0167-6377},
}

Entry last modified by Christine Kiesel, 11/09/2005
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Editor(s)
Stefan Funke		Created
01/26/2005 07:10:37 AM
Revisions
3.
2.
1.
0.
Editor(s)
Christine Kiesel
Christine Kiesel
Christine Kiesel
Stefan Funke
Edit Dates
09.11.2005 14:46:34
30.05.2005 15:53:32
30.05.2005 15:28:04
01/26/2005 07:10:37 AM