35 search results - page 2 / 7 » Approximation Schemes for Steiner Forest on Planar Graphs an... |
WDAG
2010
Springer
13 years 3 months ago
2010
Springer
Abstract. Since in general it is NP-hard to solve the minimum dominating set problem even approximatively, a lot of work has been dedicated to central and distributed approximation...
ALGORITHMICA
2004
13 years 4 months ago
2004
Eppstein [5] characterized the minor-closed graph families for which the treewidth is bounded by a function of the diameter, which includes e.g. planar graphs. This characterizatio...
LATIN
2010
Springer
13 years 10 months ago
2010
Springer
In this paper, we consider Steiner forest and its generalizations, prize-collecting Steiner forest and k-Steiner forest, when the vertices of the input graph are points in the Euc...
STACS
2007
Springer
13 years 11 months ago
2007
Springer
We study the following problem. Given a weighted planar graph G, assign labels L(v) to vertices so that given L(u), L(v) and L(x) for x ∈ X for any X ⊂ V (G), compute the dist...
SWAT
1994
Springer
13 years 9 months ago
1994
Springer
We give linear-time algorithms for a class of parametric search problems on weighted graphs of bounded tree-width. We also discuss the implications of our results to approximate p...