TY - GEN
T1 - Approximation algorithms for buy-at-bulk geometric network design
AU - Czumaj, Artur
AU - Czyzowicz, Jurek
AU - Ga̧sieniec, Leszek
AU - Jansson, Jesper
AU - Lingas, Andrzej
AU - Zylinski, Pawel
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - The buy-at-bulk network design problem has been extensively studied in the general graph model. In this paper we consider the geometric version of the problem, where all points in a Euclidean space are candidates for network nodes. We present the first general approach for geometric versions of basic variants of the buy-at-bulk network design problem. It enables us to obtain quasi-polynomial-time approximation schemes for basic variants of the buy-at-bulk geometric network design problem with polynomial total demand. Then, for instances with few sinks and low capacity links, we design very fast polynomial-time low-constant approximations algorithms.
AB - The buy-at-bulk network design problem has been extensively studied in the general graph model. In this paper we consider the geometric version of the problem, where all points in a Euclidean space are candidates for network nodes. We present the first general approach for geometric versions of basic variants of the buy-at-bulk network design problem. It enables us to obtain quasi-polynomial-time approximation schemes for basic variants of the buy-at-bulk geometric network design problem with polynomial total demand. Then, for instances with few sinks and low capacity links, we design very fast polynomial-time low-constant approximations algorithms.
UR - http://www.scopus.com/inward/record.url?scp=69949182886&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69949182886&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-03367-4_15
DO - 10.1007/978-3-642-03367-4_15
M3 - Conference contribution
AN - SCOPUS:69949182886
SN - 3642033660
SN - 9783642033667
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 168
EP - 180
BT - Algorithms and Data Structures - 11th International Symposium, WADS 2009, Proceedings
T2 - 11th International Symposium on Algorithms and Data Structures, WADS 2009
Y2 - 21 August 2009 through 23 August 2009
ER -