The inverse operation to
rs_fold(mat, m = NULL, modes = NULL) ## S4 method for signature 'DelayedArray' rs_fold(mat, m, modes)
DelayedArray object (only 2D)
the mode corresponding to rs_unfold
the original modes of the DelayedArray
This function is an extension of the
This is a wrapper function to
DelayedArray (higher than 2D)
T. Kolda, B. Bader, "Tensor decomposition and applications". SIAM Applied Mathematics and Applications 2009.
library("DelayedRandomArray") darr <- RandomUnifArray(c(2,3,4)) matT2 <- rs_unfold(darr, m=2) identical( as.array(rs_fold(matT2, m=2, modes=c(2,3,4))), as.array(darr))
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