parafac4microbiome (version 1.1.2)

parafac_core_als: Internal PARAFAC alternating least-squares (ALS) core algorithm

Description

Internal PARAFAC alternating least-squares (ALS) core algorithm

Usage

parafac_core_als(Tensor, nfac, init, maxit = 500, ctol = 1e-04)

Value

List containing a Fac object and the loss per iteration

Arguments

Tensor

Tensor data object

nfac

Number of components to compute

init

Initialization from initializePARAFAC.

maxit

Maximum number of iterations to run (default 500).

ctol

Loss function tolerance for convergence (default 1e-4)

Examples

A = array(rnorm(108*2), c(108,2))
B = array(rnorm(100*2), c(100,2))
C = array(rnorm(10*2), c(10,2))
Tensor = reinflateTensor(A, B, C)
init = initializePARAFAC(Tensor, 2)
model = parafac_core_als(Tensor, 2, init)