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arXiv 1607.01649math.NAcs.NA
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矩阵计算中的随机方法

Randomized methods for matrix computations

The University of Texas at Austin(德克萨斯大学奥斯汀分校)

Per-Gunnar Martinsson

AI总结:

本文介绍了一种用于矩阵分解的新算法,通过减少中间计算的维度来提高实际速度,主要贡献是能够高效计算非常大矩阵的低秩近似。

摘要:

本文的目的是提供一组最近开发的矩阵分解算法的可访问性介绍。这些新算法通过使用随机投影来减少中间计算的维度,从而实现高速度。这些算法特别适用于计算非常大的矩阵的低秩近似,但也可以用于加速矩阵全分解算法。这些算法的一个关键竞争优势是它们比传统确定性方法需要更少的通信。

英文摘要:

The purpose of this text is to provide an accessible introduction to a set of recently developed algorithms for factorizing matrices. These new algorithms attain high practical speed by reducing the dimensionality of intermediate computations using randomized projections. The algorithms are particularly powerful for computing low-rank approximations to very large matrices, but they can also be used to accelerate algorithms for computing full factorizations of matrices. A key competitive advantage of the algorithms described is that they require less communication than traditional deterministic methods.

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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