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ICIP
2009
IEEE
13 years 5 months ago
Randomness-in-Structured Ensembles for compressed sensing of images
Leading compressed sensing (CS) methods require m = O (k log(n)) compressive samples to perfectly reconstruct a k-sparse signal x of size n using random projection matrices (e.g., ...
Abdolreza A. Moghadam, Hayder Radha
STOC
2006
ACM
244views Algorithms» more  STOC 2006»
14 years 8 months ago
Approximate nearest neighbors and the fast Johnson-Lindenstrauss transform
We introduce a new low-distortion embedding of d 2 into O(log n) p (p = 1, 2), called the Fast-Johnson-LindenstraussTransform. The FJLT is faster than standard random projections ...
Nir Ailon, Bernard Chazelle
CORR
2007
Springer
76views Education» more  CORR 2007»
13 years 7 months ago
Some problems in asymptotic convex geometry and random matrices motivated by numerical algorithms
Abstract. The simplex method in Linear Programming motivates several problems of asymptotic convex geometry. We discuss some conjectures and known results in two related directions...
Roman Vershynin
ICML
2010
IEEE
13 years 8 months ago
Sequential Projection Learning for Hashing with Compact Codes
Hashing based Approximate Nearest Neighbor (ANN) search has attracted much attention due to its fast query time and drastically reduced storage. However, most of the hashing metho...
Jun Wang, Sanjiv Kumar, Shih-Fu Chang
ICMCS
2007
IEEE
140views Multimedia» more  ICMCS 2007»
14 years 1 months ago
Audio Signature Extraction Based on Projections of Spectrograms
Content-based signatures are designed to be a robust bitstream representation of the content so as to enable content identi cation even though the original content may go through ...
Regunathan Radhakrishnan, Claus Bauer, Corey Cheng...