How to plot roc curve for multi class?

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tejasvee
tejasvee 2017-6-30
回答： Jagadeeswararao Annam 2017-12-2
I have 3 classes and i want to plot roc curve for my classifier. But by using plotroc it is plotting only for binary class. I can't understand how to plot for multi class.

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回答（1 个）

Jagadeeswararao Annam
ROC curve is done for binary classification. For Multi-class you have to create 3 one-vs-rest binary classifications on data taking positive samples as 1 and negative samples as -1.

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