120 search results - page 19 / 24 » Improved Steiner tree approximation in graphs |
CORR
2010
Springer
13 years 7 months ago
2010
Springer
We introduce a problem that is a common generalization of the uncapacitated facility location (UFL) and minimum latency (ML) problems, where facilities not only need to be opened ...
JMLR
2010
13 years 2 months ago
2010
It is probably fair to say that exact inference in graphical models is considered a solved problem, at least regarding its computational complexity: it is exponential in the treew...
FOCS
2009
IEEE
14 years 2 months ago
2009
IEEE
In this paper, we set forth a new algorithm for generating approximately uniformly random spanning trees in undirected graphs. We show how to sample from a distribution that is wi...
AINA
2007
IEEE
14 years 1 months ago
2007
IEEE
The construction of multicast trees is complicated by the need to balance a number of important objectives, including: minimizing latencies, minimizing depth/hops, and bounding th...
FUIN
2006
13 years 7 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...