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arXiv 1609.02302math.NAcs.NA
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通过ℓ₁,₂最小化实现软恢复及其在同时稀疏和低秩矩阵恢复中的应用

Soft Recovery Through $\ell_{1,2}$ Minimization with Applications in Recovery of Simultaneously Sparse and Low-Rank Matrice

Institut für Mathematik Technische Universität Berlin(柏林工业大学数学研究所)

Axel Flinth

AI总结:

本文提出了一种新的压缩感知技术分析方法,通过ℓ₁,₂范数最小化实现矩阵的软恢复,解决了同时稀疏和低秩矩阵的恢复问题。

摘要:

本文提供了一种新的压缩感知技术分析方法,即通过最小化ℓ₁,₂范数来恢复列稀疏矩阵。不同于以往对测量矩阵的条件保证解等于真实信号,本文提出了一种保证解近似等于真实信号的条件。这种软恢复陈述在压缩感知领域尚属首次。除了理论分析外,本文还提出了两种启发式方法,利用ℓ₁,₂程序的特性设计同时稀疏和低秩矩阵的恢复算法。

英文摘要:

This article provides a new type of analysis of a compressed-sensing based technique for recovering column-sparse matrices, namely minimization of the $\ell_{1,2}$-norm. Rather than providing conditions on the measurement matrix which guarantees the solution of the program to be exactly equal to the ground truth signal (which already has been thoroughly investigated), it presents a condition which guarantees that the solution is approximately equal to the ground truth. Soft recovery statements of this kind are to the best knowledge of the author a novelty in Compressed Sensing. Apart from the theoretical analysis, we present two heuristic proposes how this property of the $\ell_{1,2}$-program can be utilized to design algorithms for recovery of matrices which are sparse and have low rank at the same time.

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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