Random time-frequency subdictionary design for sparse representations with greedy algorithms.

Manuel Moussallam Laurent Daudet Gaël Richard

Published in: ICASSP (2012)

Keyphrases

sparse representation
greedy algorithms
greedy algorithm
signal processing
dictionary learning
sparse coding
dimensionality reduction
negative matrix factorization
decision trees
face recognition
reinforcement learning
computational complexity
np hard
probabilistic model