219 search results - page 25 / 44 » A Better Approximation Ratio for the Vertex Cover Problem |
ICALP
2009
Springer
14 years 7 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...
APPROX
2005
Springer
14 years 1 months ago
2005
Springer
The field of stochastic optimization studies decision making under uncertainty, when only probabilistic information about the future is available. Finding approximate solutions to...
IPCO
2007
13 years 9 months ago
2007
Following the well-studied two-stage optimization framework for stochastic optimization [15, 18], we study approximation algorithms for robust two-stage optimization problems with ...
SWAT
2010
Springer
13 years 5 months ago
2010
Springer
In this paper we describe an algorithm to approximately solve a class of semidefinite programs called covering semidefinite programs. This class includes many semidefinite programs...
ALGORITHMICA
2010
13 years 7 months ago
2010
We consider the online version of the maximum vertex disjoint path problem when the underlying network is a tree. In this problem, a sequence of requests arrives in an online fash...