# Questions tagged [tensor-decomposition]

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### Apply 3D Operator to Matrix and get new Matrix

Hopefully this question makes sense. I know I can formulate an operator for a vector as a matrix, then apply that matrix to my vector to get a new vector. For example, if I define a left shift ...
• 163
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### Finding block structure of a tensor

Are there any well-known algorithms for partitioning a dense tensor into block-sparse form? In other words, I need to find a set of non-overlapping blocks that contain all non-zero entries of the ...
• 101
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### Scaling tensor approximation by symmetric tensor decomposition with SciPy's L-BFGS-B

I am trying to approximate a symmetric tensor of which the values are in the range of [1e-7,1e-4], by a symmetric tensor decomposition of lower rank. For this I am using the L-BFGS-B method in SciPy's ...
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### Any relation between the singular values of each flattening matrices and the core tensor out of Tucker decomposition?

Before I know how to do tucker decomposition, I mistakenly thought the core tensor is only from combining the singular value matrices of the flattening matrices. Yes I know it is not now. For the ...
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### Is there a reference/source paper for the TUCKER_ALS() in Tensor Toolbox for MATLAB?

TUCKER_ALS computes the best rank-(R1,R2,..,Rn) approximation of tensor X, according to the specified dimensions. I am using MATLAB Tensor Toolbox Version 2.5. I am wondering if I write a paper, how ...