logisticPCA (version 0.2)

cv.lsvd: CV for logistic SVD

Description

Run cross validation on dimension for logistic SVD

Usage

cv.lsvd(x, ks, folds = 5, quiet = TRUE, ...)

Arguments

x

matrix with all binary entries

ks

the different dimensions k to try

folds

if folds is a scalar, then it is the number of folds. If it is a vector, it should be the same length as the number of rows in x

quiet

logical; whether the function should display progress

...

Additional arguments passed to logisticSVD

Value

A matrix of the CV negative log likelihood with k in rows

Examples

# construct a low rank matrix in the logit scale
rows = 100
cols = 10
set.seed(1)
mat_logit = outer(rnorm(rows), rnorm(cols))

# generate a binary matrix
mat = (matrix(runif(rows * cols), rows, cols) <= inv.logit.mat(mat_logit)) * 1.0

## Not run: 
# negloglikes = cv.lsvd(mat, ks = 1:9)
# plot(negloglikes)
# ## End(Not run)