632 search results - page 3 / 127 » On the Approximability of the Steiner Tree Problem |
ICALP
2009
Springer
14 years 5 months ago
2009
Springer
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
FOCS
2004
IEEE
13 years 9 months ago
2004
IEEE
Given an undirected multigraph G and a subset of vertices S V (G), the STEINER TREE PACKING problem is to find a largest collection of edge-disjoint trees that each connects S. T...
FSTTCS
2003
Springer
13 years 10 months ago
2003
Springer
The Covering Steiner problem is a common generalization of the k-MST and Group Steiner problems. An instance of the Covering Steiner problem consists of an undirected graph with ed...
STOC
2010
ACM
13 years 10 months ago
2010
ACM
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
SIAMCOMP
2008
13 years 5 months ago
2008
We consider a game-theoretical variant of the Steiner forest problem in which each player j, out of a set of k players, strives to connect his terminal pair (sj, tj) of vertices in...