120 search results - page 6 / 24 » Improved Steiner tree approximation in graphs |
DAM
1999
13 years 7 months ago
1999
This paper deals with the problem of constructing Steiner trees of minimum weight with diameter bounded by d, spanning a given set of vertices in a graph. Exact solutions or logar...
IPCO
2001
13 years 9 months ago
2001
Garg [10] gives two approximation algorithms for the minimum-cost tree spanning k vertices in an undirected graph. Recently Jain and Vazirani [16] discovered primal-dual approxima...
ESA
2008
Springer
13 years 9 months ago
2008
Springer
Abstract. We study two-stage robust variants of combinatorial optimization problems like Steiner tree, Steiner forest, and uncapacitated facility location. The robust optimization ...
ISAAC
2004
Springer
14 years 27 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...
COCOA
2008
Springer
13 years 9 months ago
2008
Springer
This paper deals with approximation algorithms for the prize collecting generalized Steiner forest problem, defined as follows. The input is an undirected graph G = (V, E), a colle...