Title
Improving the Incoherence of a Learned Dictionary via Rank Shrinkage.
Abstract
This letter considers the problem of dictionary learning for sparse signal representation whose atoms have low mutual coherence. To learn such dictionaries, at each step, we first update the dictionary using the method of optimal directions (MOD) and then apply a dictionary rank shrinkage step to decrease its mutual coherence. In the rank shrinkage step, we first compute a rank 1 decomposition of ...
Year
DOI
Venue
2017
10.1162/NECO_a_00907
Neural Computation
Field
DocType
Volume
Least squares,Dictionary learning,Shrinkage,K-SVD,Coherence (physics),Artificial intelligence,Coordinate descent,Mutual coherence,Machine learning,Mathematics
Journal
29
Issue
ISSN
Citations 
1
0899-7667
1
PageRank 
References 
Authors
0.36
0
3
Name
Order
Citations
PageRank
shashanka ubaru1588.97
Abd-Krim Seghouane27812.27
Yousef Saad31940254.74