35 search results - page 4 / 7 » Approximation Schemes for Steiner Forest on Planar Graphs an... |
STACS
2009
Springer
14 years 24 days ago
2009
Springer
The notions of hypertree width and generalized hypertree width were introduced by Gottlob, Leone, and Scarcello in order to extend the concept of hypergraph acyclicity. These noti...
ALGORITHMICA
1998
13 years 5 months ago
1998
In this paper we give a fully dynamic approximation scheme for maintaining all-pairs shortest paths in planar networks. Given an error parameter ε such that 0 < ε, our algorit...
ICALP
2009
Springer
14 years 6 months ago
2009
Springer
We develop new structural results for apex-minor-free graphs and show their power by developing two new approximation algorithms. The first is an additive approximation for colorin...
SODA
2012
ACM
11 years 8 months ago
2012
ACM
The Directed Steiner Tree (DST) problem is a cornerstone problem in network design. We focus on the generalization of the problem with higher connectivity requirements. The proble...
ESA
2005
Springer
13 years 11 months ago
2005
Springer
Abstract. We present new approximation schemes for various classical problems of finding the minimum-weight spanning subgraph in edge-weighted undirected planar graphs that are re...