What does a point on ROC curve represents?

machine_learning
roc

#1

so , what does a point represents on ROC curve . For suppose I have taken a point like (0.4,0.8) (fpr,tpr) , what does it represents ?

what does the cut-off’s, treshold value in ROC means?


#2

@arfat I think this link will give your questions answer


#3

I asked this question on cross validated and got a great answer