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On the Computational Intractability of Exact and Approximate Dictionary Learning.
Andreas M. Tillmann
Published in:
IEEE Signal Process. Lett. (2015)
Keyphrases
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dictionary learning
exact and approximate
sparse representation
sparse coding
string matching
lower bound
dynamic programming
data mining
neural network
signal processing
image classification
natural images
linear combination
supervised learning
query evaluation
upper bound
search space
image processing