On the Conditioning of Random Subdictionaries

@inproceedings{Tropp2007OnTC,
  title={On the Conditioning of Random Subdictionaries},
  author={Joel A. Tropp},
  year={2007}
}
An important problem in the theory of sparse approximation is to identify wellconditioned subsets of vectors from a general dictionary. In most cases, current results do not apply unless the number of vectors is smaller than the square root of the ambient dimension, so these bounds are too weak for many applications. This paper shatters the square-root… CONTINUE READING

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