rTensor: unmatvec – R documentation

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unmatvec

Unmatvec Folding of Matrix

Description

The inverse operation to matvec-methods, turning a matrix into a Tensor. For a full account of matrix folding/unfolding operations, consult Kolda and Bader (2009).

Usage

unmatvec(mat, modes = NULL)

Arguments

`mat`	matrix to be folded into a Tensor
`modes`	the modes of the output Tensor

Value

Tensor object with modes given by modes

References

T. Kolda, B. Bader, "Tensor decomposition and applications". SIAM Applied Mathematics and Applications 2009.

Examples

tnsr <- new("Tensor",3L,c(3L,4L,5L),data=runif(60))
matT1<-matvec(tnsr)
identical(unmatvec(matT1,modes=c(3,4,5)),tnsr)

rTensor

Tools for Tensor Analysis and Decomposition

v1.4.8

GPL (>= 2)

Authors

James Li and Jacob Bien and Martin Wells

Initial release

2021-05-14