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cs.IT2010★ 3 cited
Analyzing Weighted Minimization for Sparse Recovery with Nonuniform Sparse Models\footnote{The results of this paper were presented in part at the International Symposium on Information Theory, ISIT 2009}
M. Amin Khajehnejad, Weiyu Xu, A. Salman Avestimehr +1
In this paper we introduce a nonuniform sparsity model and analyze the performance of an optimized weighted minimization over that sparsity model. In particular, we focus…
cs.IT2010★ 6 cited
Improved Sparse Recovery Thresholds with Two-Step Reweighted Minimization
M. Amin Khajehnejad, Weiyu Xu, Salman Avestimehr +1
It is well known that minimization can be used to recover sufficiently sparse unknown signals from compressed linear measurements. In fact, exact thresholds on the sparsit…