arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1707.07976stat.MLcs.NAmath.NA
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缩放核范数最小化用于低秩张量补全

Scaled Nuclear Norm Minimization for Low-Rank Tensor Completion

Columbia University(哥伦比亚大学)

Morteza Ashraphijuo, Xiaodong Wang

AI总结:

本文提出通过最小化张量展开的加权核范数之和来恢复低TT秩张量,证明该方法相比传统核范数求和方法更高效,需更少样本即可恢复原始张量。

摘要:

最小化矩阵的核范数已被证明在重建低秩采样矩阵中非常有效。此外,最小化张量矩阵化核范数之和已被证明在恢复低Tucker秩采样张量中非常有效。本文提出通过最小化张量展开的加权核范数之和来恢复低TT秩采样张量。我们提供数值结果表明,与单纯最小化核范数之和相比,所提方法需要显著更少的样本即可恢复到原始张量,因为TT张量模型中的展开结构与Tucker张量模型中的矩阵化结构本质上不同。

英文摘要:

Minimizing the nuclear norm of a matrix has been shown to be very efficient in reconstructing a low-rank sampled matrix. Furthermore, minimizing the sum of nuclear norms of matricizations of a tensor has been shown to be very efficient in recovering a low-Tucker-rank sampled tensor. In this paper, we propose to recover a low-TT-rank sampled tensor by minimizing a weighted sum of nuclear norms of unfoldings of the tensor. We provide numerical results to show that our proposed method requires significantly less number of samples to recover to the original tensor in comparison with simply minimizing the sum of nuclear norms since the structure of the unfoldings in the TT tensor model is fundamentally different from that of matricizations in the Tucker tensor model.

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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