arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.3499math.OCcs.ITmath.IT
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矩阵秩最小化的不动点延拓算法的收敛性

Convergence of fixed-point continuation algorithms for matrix rank minimization

Donald Goldfarb, Shiqian Ma

摘要:

矩阵秩最小化问题在系统辨识、最优控制、低维嵌入等领域有着广泛的应用。由于该问题一般是NP-困难的,因此其凸松弛问题--核范数最小化问题往往被求解。最近,Ma,Goldfarb和Chen提出了一种求解核范数最小化问题的不动点延拓算法.该算法通过引入一种近似的奇异值分解技术,通常可以得到矩阵秩最小化问题的解。本文研究了矩阵秩最小化问题的不动点延拓算法及其变形的收敛性和可恢复性。启发式确定矩阵的秩时,其真实的秩是未知的也提出了。这些算法中的一些与压缩感知中的贪婪算法密切相关。这些算法求解仿射约束矩阵秩最小化问题的数值结果的报告。

英文摘要:

The matrix rank minimization problem has applications in many fields such as system identification, optimal control, low-dimensional embedding, etc. As this problem is NP-hard in general, its convex relaxation, the nuclear norm minimization problem, is often solved instead. Recently, Ma, Goldfarb and Chen proposed a fixed-point continuation algorithm for solving the nuclear norm minimization problem. By incorporating an approximate singular value decomposition technique in this algorithm, the solution to the matrix rank minimization problem is usually obtained. In this paper, we study the convergence/recoverability properties of the fixed-point continuation algorithm and its variants for matrix rank minimization. Heuristics for determining the rank of the matrix when its true rank is not known are also proposed. Some of these algorithms are closely related to greedy algorithms in compressed sensing. Numerical results for these algorithms for solving affinely constrained matrix rank minimization problems are reported.

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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