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i plotted the ROC curve for RandomForest Classifier and this is what i get :

enter image description here

The shape looks weird to me , can somebody help me to make sense of it , and is this shape 'common' to not say normal?

thank you.

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Imagine you have a blue line drawn from the point (0,0) to the point (0, 0.51). Do you see a common shape now?

That happens because you have few or no predicted probabilities above 0.9 or something close to it, so the point with 0 false positives is never touched.

The ROC curve you are watching is perfectly normal.

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  • $\begingroup$ Oh i see , thank you . $\endgroup$ – Dimi May 22 '19 at 2:24

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