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arXiv 2201.12301math.NAcs.NA
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低秩矩阵在Chebyshev范数下的最佳逼近算法

On the algorithm of best approximation by low rank matrices in the Chebyshev norm

Stanislav Morozov, Nikolai Zamarashkin, Eugene Tyrtyshnikov

摘要:

低秩矩阵逼近问题是计算数学中普遍存在的问题。传统上,这个问题是解决在谱或Frobenius范数,其中的近似的精度是有关的矩阵的奇异值的减少率。然而,最近的结果表明,这一要求是没有必要的其他规范。本文提出了一种在Chebyshev范数下求解低秩逼近问题的方法,该方法能够有效地构造矩阵的精确逼近,其奇异值不减小或减小缓慢.

英文摘要:

The low-rank matrix approximation problem is ubiquitous in computational mathematics. Traditionally, this problem is solved in spectral or Frobenius norms, where the accuracy of the approximation is related to the rate of decrease of the singular values of the matrix. However, recent results indicate that this requirement is not necessary for other norms. In this paper, we propose a method for solving the low-rank approximation problem in the Chebyshev norm, which is capable of efficiently constructing accurate approximations for matrices, whose singular values do not decrease or decrease slowly.

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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