219 search results - page 33 / 44 » A Better Approximation Ratio for the Vertex Cover Problem |
ICPR
2008
IEEE
14 years 2 months ago
2008
IEEE
Scale-free networks are believed to closely model most real-world networks. An interesting property of such networks is the existence of so-called hub and community structures. In...
COR
2007
13 years 7 months ago
2007
We present new primal-dual algorithms for several network design problems. The problems considered are the generalized Steiner tree problem (GST), the directed Steiner tree proble...
FOCS
1995
IEEE
13 years 11 months ago
1995
IEEE
This paper continues the investigation of the connection between probabilistically checkable proofs PCPs the approximability of NP-optimization problems. The emphasis is on prov...
FOCS
2004
IEEE
13 years 11 months ago
2004
IEEE
Stochastic optimization problems attempt to model uncertainty in the data by assuming that (part of) the input is specified in terms of a probability distribution. We consider the...
MOBIHOC
2006
ACM
14 years 7 months ago
2006
ACM
We study a novel hierarchical wireless networking approach in which some of the nodes are more capable than others. In such networks, the more capable nodes can serve as Mobile Ba...