arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.00976math.NAcs.NA
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三阶张量的T-奇异值与T-作图

T-Singular Values and T-Sketching for Third Order Tensors

Liqun Qi, Gaohang Yu

摘要:

基于Kilmer等人提出的三阶张量的T-SVD(tensorSVD),定义了三阶张量的T-奇异值。三阶张量的T-奇异值是非负标量。非零T-奇异值的个数是张量的张量管秩。然后利用T-奇异值定义了三阶张量的尾能量,并将其应用于低阶张量近似的张量草图算法的误差估计。对真实数据的数值实验表明,该算法是有效的.

英文摘要:

Based upon the T-SVD (tensor SVD) of third order tensors, introduced by Kilmer and her collaborators, we define T-singular values of third order tensors. T-singular values of third order tensors are nonnegative scalars. The number of nonzero T-singular values is the tensor tubal rank of the tensor. We then use T-singular values to define the tail energy of a third order tensor, and apply it to the error estimation of a tensor sketching algorithm for low rank tensor approximation. Numerical experiments on real world data show that our algorithm is efficient.

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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