arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.4575cs.ITmath.IT
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通过\ell_p实现稳定的同稀疏恢复-分析优化

Stable Cosparse Recovery via \ell_p-analysis Optimization

Shubao Zhang, Hui Qian, Xiaojin Gong, Jianying Zhou

摘要:

本文研究了用于余分析信号恢复的$\ell_p$分析优化($0<p\leq1$)问题.我们建立了一个界的恢复误差通过限制$p$ -等距性质的任何子空间。我们进一步证明了非凸的$\ell_q$分析优化可以做恢复与较低的样本复杂性和更广泛的范围内的cosparity比其凸对应。此外,我们开发了一个迭代重加权的方法来解决变分框架下的优化问题。初步的计算实验结果表明,非凸方法优于凸方法。

英文摘要:

In this paper we study the $\ell_p$-analysis optimization ($0<p\leq1$) problem for cosparse signal recovery. We establish a bound for recovery error via the restricted $p$-isometry property over any subspace. We further prove that the nonconvex $\ell_q$-analysis optimization can do recovery with a lower sample complexity and in a wider range of cosparsity than its convex counterpart. In addition, we develop an iteratively reweighted method to solve the optimization problem under a variational framework. Empirical results of preliminary computational experiments illustrate that the nonconvex method outperforms its convex counterpart.

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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