237 search results - page 24 / 48 » Improved Approximations of Independent Sets in Bounded-Degre... |
STOC
2002
ACM
14 years 9 months ago
2002
ACM
Cooper, Dyer and Frieze studied the problem of sampling H-colourings (nearly) uniformly at random. Special cases of this problem include sampling colourings and independent sets a...
ANOR
2005
13 years 8 months ago
2005
In Hell et al. (2004), we have previously observed that, in a chordal graph G, the maximum number of independent r-cliques (i.e., of vertex disjoint subgraphs of G, each isomorphic...
SWAT
2010
Springer
14 years 1 months ago
2010
Springer
We consider the problem of partitioning the set of vertices of a given unit disk graph (UDG) into a minimum number of cliques. The problem is NP-hard and various constant factor a...
ESA
2003
Springer
14 years 2 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 ...
APPROX
2005
Springer
14 years 2 months ago
2005
Springer
We study the partial vertex cover problem. Given a graph G = (V, E), a weight function w : V → R+ , and an integer s, our goal is to cover all but s edges, by picking a set of v...