PARAFAC loss function calculation
Usage
parafac_fun(x, Tensor, lambdas = NULL)
Arguments
- x
Vector of fitted loadings generated by the PARAFAC algorithm, can also be a Fac object
- Tensor
input data
- lambdas
If lambdas (from the kruskal tensor case) are generated to make the Fac norm 1, they can be supplied.
Value
Scalar value of the loss function
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))
X = reinflateTensor(A, B, C)
model = parafac(X, 2)
f = parafac_fun(model$Fac, X)
