Is the ROC Curve used only in the Binary classification?

Question

I'm starting to study Machine Learning now and I saw in some articles the ROC Curve being used only in binary classification.

Can I use the ROC Curve in MultiClass classification and measure my AUC ?

Answer 1

ROC curves are typically used in binary classification also it can be used for MultiClass classification , but you have to binarize the output. You can read here the example for multi class example: visit https://scikit-learn.org/stable/auto_examples/model_selection/plot_roc.html