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JVCIR
2010
162views more  JVCIR 2010»
13 years 6 months ago
Tetrolet transform: A new adaptive Haar wavelet algorithm for sparse image representation
In order to get an efficient image representation we introduce a new adaptive Haar wavelet transform, called Tetrolet Transform. Tetrolets are Haar-type wavelets whose supports ar...
Jens Krommweh
WINE
2010
Springer
220views Economy» more  WINE 2010»
13 years 5 months ago
Threshold Models for Competitive Influence in Social Networks
The problem of influence maximization deals with choosing the optimal set of nodes in a social network so as to maximize the resulting spread of a technology (opinion, productowne...
Allan Borodin, Yuval Filmus, Joel Oren
ICASSP
2009
IEEE
13 years 5 months ago
Weighted nonnegative matrix factorization
Nonnegative matrix factorization (NMF) is a widely-used method for low-rank approximation (LRA) of a nonnegative matrix (matrix with only nonnegative entries), where nonnegativity...
Yong-Deok Kim, Seungjin Choi
SIAMMAX
2010
103views more  SIAMMAX 2010»
13 years 2 months ago
On Chebyshev Polynomials of Matrices
The mth Chebyshev polynomial of a square matrix A is the monic polynomial that minimizes the matrix 2-norm of p(A) over all monic polynomials p(z) of degree m. This polynomial is u...
Vance Faber, Jörg Liesen, Petr Tichý
ICASSP
2011
IEEE
12 years 11 months ago
ML decoding in decode-and-forward based cooperative communication system
Abstract— In this paper, we derive a maximum-likelihood (ML) decoder of the decode-and-forward (DF) protocol utilizing an arbitrary complex-valued M-point constellation. Existing...
Manav R. Bhatnagar, Are Hjørungnes