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APPROX
2007
Springer
13 years 11 months ago
2007
Springer
We study the Steiner Tree problem in the model of two-stage stochastic optimization with non-uniform inflation factors, and give a poly-logarithmic approximation factor for this pr...
FOCS
1999
IEEE
13 years 12 months ago
1999
IEEE
We consider the DIRECTED STEINER NETWORK problem, also called the POINT-TO-POINT CONNECTION problem, where given a directed graph G and p pairs {(s1,t1),...,(sp,tp)} of nodes in t...
WDAG
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. In this paper, we present fast and fully distributed algorithms for matching in weighted trees and general weighted graphs. The time complexity as well as the approximati...
STOC
2003
ACM
14 years 8 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 ...
SODA
1992
ACM
13 years 8 months ago
1992
ACM
We present a general approximation technique for a large class of graph problems. Our technique mostly applies to problems of covering, at minimum cost, the vertices of a graph wit...