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arXiv 1604.02500math.OC
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结构化低秩矩阵分解的度规函数的半定表示

Semidefinite representations of gauge functions for structured low-rank matrix decomposition

Hsiao-Han Chao, Lieven Vandenberghe

摘要:

本文提出了1-范数最优化问题的半定规划公式的无限字典的复指数,最近提出的超分辨率,无网格压缩传感,和其他应用在信号处理。与线性系理论中的广义Kalman-Yakubovich-Popov引理有关的结果为这些应用中所用的罚函数的半定表示提供了简单的、建设性的证明。连接导致几个扩展到度规函数和原子规范的向量集参数化通过零空间的矩阵束。该技术示出了低秩矩阵逼近问题中出现的频谱估计和阵列处理的例子。

英文摘要:

This paper presents generalizations of semidefinite programming formulations of 1-norm optimization problems over infinite dictionaries of vectors of complex exponentials, which were recently proposed for superresolution, gridless compressed sensing, and other applications in signal processing. Results related to the generalized Kalman-Yakubovich-Popov lemma in linear system theory provide simple, constructive proofs of the semidefinite representations of the penalty functions used in these applications. The connection leads to several extensions to gauge functions and atomic norms for sets of vectors parameterized via the nullspace of matrix pencils. The techniques are illustrated with examples of low-rank matrix approximation problems arising in spectral estimation and array processing.

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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