AUROC: Compute area under the ROC curve
In miguelbiron/threepRop: R Implementation of the 3prop Label Propagation Algorithm

Function for computing the area under the ROC curve (AUROC)

1	AUROC(p, y, plot_roc = TRUE, warn_inv = TRUE)

`p`	vector of scores. Can be sparse (from package Matrix), but will be coerced to dense.
`y`	vector of labels (0 or 1). Can be sparse (from package Matrix), but will be coerced to dense.
`plot_roc`	if `TRUE`, plots the ROC curve.
`warn_inv`	raises a warning if high values of `p` are associated with the 0 label, which produces an AUROC lower than 0.5.