cmf_krr_ecv: External n-fold cross-validation
In conmolfields: Continuous molecular fields

External n-fold cross-validation

1	cmf_krr_ecv(nfolds = 5, act_all_fname = "activity-all.txt", act_colnum = 2, sep = ",", kernels_all_fname = "ligands-kernels-all.RData", ecv_fname = "ligands-ecv.RData", ...)

`nfolds`
`act_all_fname`
`act_colnum`
`sep`
`kernels_all_fname`
`ecv_fname`
`...`

##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.

## The function is currently defined as
function (nfolds = 5, act_all_fname = "activity-all.txt", act_colnum = 2, 
    sep = ",", kernels_all_fname = "ligands-kernels-all.RData", 
    ecv_fname = "ligands-ecv.RData", ...) 
{
    act <- read.table(act_all_fname, header = TRUE, sep = sep)
    y <- act[, act_colnum]
    load(kernels_all_fname)
    ecv <- cmf_krr_ecv_mem(nfolds = nfolds, y = y, kernels = kernels, 
        ...)
    save(ecv, file = ecv_fname)
    ecv
  }