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arXiv 1508.04040cs.ITmath.IT
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关于同时正交匹配追踪的精确恢复条件

On The Exact Recovery Condition of Simultaneous Orthogonal Matching Pursuit

Jean-François Determe, Jérôme Louveaux, Laurent Jacques, François Horlin

摘要:

在过去的几年中,已经开发了几种精确恢复准则(ERC),以确保正交匹配追踪(OMP)识别稀疏信号的正确支持。这些ERC依赖于限制等距属性(RIP),相关的限制等距常数(RIC),有时限制正交常数(ROC)。在本文中,三个最新的ERC OMP进行了检查。的贡献是表明,这些ERC仍然有效的推广OMP,同时正交匹配追求(SOMP),这是能够同时处理几个测量向量,并返回一个共同的支持估计的基础稀疏向量。的界限的清晰度也简要讨论了以往的作品集中在OMP。

英文摘要:

Several exact recovery criteria (ERC) ensuring that orthogonal matching pursuit (OMP) identifies the correct support of sparse signals have been developed in the last few years. These ERC rely on the restricted isometry property (RIP), the associated restricted isometry constant (RIC) and sometimes the restricted orthogonality constant (ROC). In this paper, three of the most recent ERC for OMP are examined. The contribution is to show that these ERC remain valid for a generalization of OMP, entitled simultaneous orthogonal matching pursuit (SOMP), that is capable to process several measurement vectors simultaneously and return a common support estimate for the underlying sparse vectors. The sharpness of the bounds is also briefly discussed in light of previous works focusing on OMP.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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