Improved analysis of SP and CoSaMP under total perturbations
Improved analysis of SP and CoSaMP under total perturbations
复制标题
改进了总扰动下 SP 和 CoSaMP 的分析
DOI:
10.1186/s13634-016-0412-5
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发表时间:
2016-11
影响因子:
1.9
通讯作者:
Li, Haifeng
中科院分区:
文献类型:
--
作者:
Li, Haifeng
Practically, in the underdetermined modely=Ax, wherexis aKsparse vector (i.e., it has no more thanKnonzero entries), bothyandAcould be totally perturbed. A more relaxed condition means less number of measurements are needed to ensure the sparse recovery from theoretical aspect. In this paper, based on restricted isometry property (RIP), for subspace pursuit (SP) and compressed sampling matching pursuit (CoSaMP), two relaxed sufficient conditions are presented under total perturbations to guarantee that the sparse vectorxis recovered. Taking random matrix as measurement matrix, we also discuss the advantage of our condition. Numerical experiments validate that SP and CoSaMP can provide oracle-order recovery performance.
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DOI:
--
发表时间:
2008
期刊:
ArXiv
影响因子:
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DOI:
10.1007/978-3-540-74494-8_43
发表时间:
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期刊:
--
影响因子:
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