147 search results - page 2 / 30 » Very sparse random projections |
SDM
2007
SIAM
13 years 6 months ago
2007
SIAM
We propose the use of random projections with a sparse matrix to maintain a sketch of a collection of high-dimensional data-streams that are updated asynchronously. This sketch al...
ICPR
2010
IEEE
13 years 7 months ago
2010
IEEE
In this paper we investigate the usage of random ortho-projections in the compression of sparse feature vectors. The study is carried out by evaluating the compressed features in ...
ICIP
2008
IEEE
14 years 6 months ago
2008
IEEE
Hashes can be used to provide authentication of multimedia contents. In the case of images, a hash can be used to detect whether the data has been modified in an illegitimate way....
ICASSP
2008
IEEE
13 years 11 months ago
2008
IEEE
The emerging theory of compressed sensing (CS) provides a universal signal detection approach for sparse signals at sub-Nyquist sampling rates. A small number of random projection...
KDD
2001
ACM
14 years 5 months ago
2001
ACM
Random projections have recently emerged as a powerful method for dimensionality reduction. Theoretical results indicate that the method preserves distances quite nicely; however,...