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The Cartographer
A note on the Survivable Network Design Problem
August 08, 2016 Β· Declared Dead Β· π arXiv.org
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Authors
Chandra Chekuri, Thapanapong Rukkanchanunt
arXiv ID
1608.02515
Category
cs.DS: Data Structures & Algorithms
Citations
0
Venue
arXiv.org
Last Checked
5 months ago
Abstract
In this note we consider the survivable network design problem (SNDP) in undirected graphs. We make two contributions. The first is a new counting argument in the iterated rounding based 2-approximation for edge-connectivity SNDP (EC-SNDP) originally due to Jain. The second is to make some additional connections between hypergraphic version of SNDP introduced by Zhao, Nagamochi and Ibaraki and edge and node-weighted versions of EC-SNDP and element-connectivity SNDP (Elem-SNDP). One useful consequence of this connection is a 2-approximation for Elem-SNDP that avoids the use of set-pair based relaxation and analysis.
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