575 search results - page 14 / 115 » A Spectral Approach to Lower Bounds |
CPAIOR
2005
Springer
14 years 28 days ago
2005
Springer
Abstract. The NValue constraint counts the number of different values assigned to a vector of variables. Propagating generalized arc consistency on this constraint is NP-hard. We ...
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
In this paper we investigate the fault diagnosis problem in IP networks. We provide a lower bound on the average number of probes per edge using variational inference technique pro...
ENDM
2008
13 years 7 months ago
2008
A generalized configuration is a set of n points and n 2 pseudolines such that each pseudoline passes through exactly two points, two pseudolines intersect exactly once, and no th...
HYBRID
2007
Springer
14 years 1 months ago
2007
Springer
We provide an asymptotically tight, computationally efficient approximation of the joint spectral radius of a set of matrices using sum of squares (SOS) programming. The approach i...
APPROX
2007
Springer
13 years 11 months ago
2007
Springer
We show that the multi-commodity max-flow/min-cut gap for series-parallel graphs can be as bad as 2, matching a recent upper bound [8] for this class, and resolving one side of a ...