291 search results - page 5 / 59 » Factor 2 Approximation Algorithm for the Generalized Steiner... |
SODA
2012
ACM
11 years 9 months ago
2012
ACM
We give a constant factor approximation algorithm for the following generalization of the k-median problem. We are given a set of clients and facilities in a metric space. Each fa...
COCOON
2008
Springer
13 years 8 months ago
2008
Springer
In this paper, we introduce the generalized capacitated tree-routing problem (GCTR), which is described as follows. Given a connected graph G = (V, E) with a sink s V and a set M...
ISAAC
2004
Springer
14 years 2 days ago
2004
Springer
The Steiner tree problem asks for a minimum cost tree spanning a given set of terminals S ⊆ V in a weighted graph G = (V, E, c), c : E → R+ . In this paper we consider a genera...
ESA
2008
Springer
13 years 8 months ago
2008
Springer
For several NP-hard network design problems, the best known approximation algorithms are remarkably simple randomized algorithms called Sample-Augment algorithms in [11]. The algor...
SIAMDM
2008
13 years 6 months ago
2008
A well-known theorem of Nash-Williams and Tutte gives a necessary and sufficient condition for the existence of k edge-disjoint spanning trees in an undirected graph. A corollary o...