306 search results - page 28 / 62 » On the Minimal Uncompletable Word Problem |
SIAMSC
2010
13 years 9 months ago
2010
In this paper, we develop a fast multilevel algorithm for simultaneously denoising and deblurring images under the total variation regularization. Although much effort has been de...
COMPSEC
2010
13 years 9 months ago
2010
In this paper we address the problem of reducing the role mining complexity in RBAC systems. To this aim, we propose a three steps methodology: first, we associate a weight to rol...
CORR
2011
Springer
13 years 5 months ago
2011
Springer
We propose and analyze an extremely fast, efficient and simple method for solving the problem: min{ u 1 :Au=f,u∈Rn }. This method was first described in [1], with more details i...
PC
2010
13 years 5 months ago
2010
We present an efficient implementation of the Modified SParse Approximate Inverse (MSPAI) preconditioner. MSPAI generalizes the class of preconditioners based on Frobenius norm mi...
SIAMIS
2010
13 years 5 months ago
2010
This paper analyzes and improves the linearized Bregman method for solving the basis pursuit and related sparse optimization problems. The analysis shows that the linearized Bregma...