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arXiv 2212.05024cs.LG
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张量回归的可分解稀疏张量

Decomposable Sparse Tensor on Tensor Regression

University of Pittsburgh(匹兹堡大学)

Haiyi Mao, Jason Xiaotian Dou

摘要:

大多数正则化张量回归研究集中在标量响应的张量预测或张量响应的向量预测。我们考虑张量回归中的稀疏低秩张量,其中预测量$\mathcal{X}$和响应量$\mathcal{Y}$都是高维张量。通过证明单位秩张量上的一般内积或压缩积可以分解为标准内积和外积,问题可以简单地转化为张量到标量回归,然后进行张量分解。因此,我们提出了一个快速解决方案的基础上,逐步搜索组成的收缩部分和生成部分,这是交替优化。我们成功地证明了我们的方法可以通过有效地结合结构信息,在准确性和预测因子选择方面超越当前的方法。

英文摘要:

Most regularized tensor regression research focuses on tensors predictors with scalars responses or vectors predictors to tensors responses. We consider the sparse low rank tensor on tensor regression where predictors $\mathcal{X}$ and responses $\mathcal{Y}$ are both high-dimensional tensors. By demonstrating that the general inner product or the contracted product on a unit rank tensor can be decomposed into standard inner products and outer products, the problem can be simply transformed into a tensor to scalar regression followed by a tensor decomposition. So we propose a fast solution based on stagewise search composed by contraction part and generation part which are optimized alternatively. We successfully demonstrate our method can out perform current methods in terms of accuracy and predictors selection by effectively incorporating the structural information.

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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