ROC curves for multicassses

[zizoo]

Hello,
I found an interesting node to plot the ROC curve. Unfortunately, it is not working with multiclasses.
Is there any other alternative to this node?
Are there other nodes dedicated for multicalsses classficiation?
Thanks,
Zied

[ScottF]

Hi @zizoo -

Did you see this post from last week?

Metrics in multiclass classification

Hi @zizoo - Sorry for the delayed response here. One method you’ll find mentioned a lot for evaluating the results of multi-class classifiers is the F-measure (or F1), both micro- and macro- averaged. There a brief explanation and associated calculation in this thread on CrossValidated. Scikit-learn has a function that will calculate it for you. Incidentally, macro-averaged F1 is what Amazon ML uses. There are also some methods to calculate multi-class ROC curves using pairwise comparison, whe…