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I want to use Matlab for my project. matlab has tensor toolbox and in it there are two types of tensor : Dens tensor and sparse tensor. my project is about " fiber orientation". how can i know what type is my tensor and use which one from tensor toolbox in Matlab. thanks for your attention

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In general a sparse tensor is a tensor with many zeros whereas a dense tensor has no (or hardly any zeros.

So you could check for the number of non-zeros (nnz(A)) and compare that to the size of the tensor

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