63 search results - page 7 / 13 » Approximating Steiner Networks with Node-Weights |
NETWORKS
2010
13 years 5 months ago
2010
We consider a probabilistic model for the Steiner Tree problem. Under this model the problem is defined in a 2-stage setting over a first-stage complete weighted graph having it...
APPROX
2000
Springer
13 years 11 months ago
2000
Springer
We consider a fault tolerant version of the metric facility location problem in which every city, j, is required to be connected to rj facilities. We give the first non-trivial ap...
STOC
2003
ACM
14 years 7 months ago
2003
ACM
Given an undirected graph or an Eulerian directed graph G and a subset S of its vertices, we show how to determine the edge connectivity C of the vertices in S in time O(C3 n log ...
WINET
2008
13 years 7 months ago
2008
This paper addresses the following relay sensor placement problem: given the set of duty sensors in the plane and the upper bound of the transmission range, compute the minimum nu...
SODA
2008
ACM
13 years 8 months ago
2008
ACM
In this paper, we present two techniques to analyze greedy approximation with nonsubmodular functions restricted submodularity and shifted submodularity. As an application of the ...