561 search results - page 93 / 113 » Algorithms and applications for approximate nonnegative matr... |
SACMAT
2010
ACM
14 years 2 days ago
2010
ACM
There has been increasing interest in automatic techniques for generating roles for role based access control, a process known as role mining. Most role mining approaches assume t...
FOCS
2000
IEEE
14 years 4 days ago
2000
IEEE
We give new bounds on the circuit complexity of the quantum Fourier transform (QFT). We give an upper bound of Ç´ÐÓ Ò · ÐÓ ÐÓ ´½ µµ on the circuit depth for computin...
FSTTCS
1993
Springer
13 years 12 months ago
1993
Springer
We investigate the complexity and approximability of some location problems when two distance values are specified for each pair of potential sites. These problems involve the se...
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
—Sensor network localization is an instance of the NP-HARD graph realization problem. Thus, methods used in practice are not guaranteed to find the correct localization, even if...
KDD
2007
ACM
14 years 8 months ago
2007
ACM
The collaborative filtering approach to recommender systems predicts user preferences for products or services by learning past useritem relationships. In this work, we propose no...