130 search results - page 13 / 26 » Faster Approximation Algorithms for the Rectilinear Steiner ... |
ESA
2003
Springer
14 years 1 months ago
2003
Springer
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
WADS
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. A central issue in the design of modern communication networks is the provision of Quality-of-Service (QoS) guarantees at the presence of heterogeneous users. For instanc...
ICDE
2009
IEEE
14 years 2 months ago
2009
IEEE
— Large graphs and networks are abundant in modern information systems: entity-relationship graphs over relational data or Web-extracted entities, biological networks, social onl...
APPROX
2007
Springer
13 years 12 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...
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 ...