ROC and area under the curve:
ROC and area under the curve
Description
Receiver operating curve and area under the curve.
Usage
auc(group, preds, roc = FALSE, cutoffs = NULL)
Arguments
group
The true labels, either a factor or a numerical vector with two numbers only.
preds
The predicted values of each group.
roc
If you want the ROC to appear set it to TRUE.
cutoffs
If you provide a vector with decreasing numbers from 1 to 0 that will be used for the ROC, otherwise, the values from 1 to 0 with a step equal to -0.01 will be used.
Value
If the roc is set to FALSE, the area under the curve is returned only. Otherwise a list including
If the roc is set to FALSE, the area under the curve is returned only. Otherwise a list including
Details
The ara under the curve is returned. The user has the option of getting the receiver operating curve as well.