# Is AUC a good metric for evaluating the performance of a multi-class classification?

Considering the definition of AUC (Area Under Curve), is that a reliable performance metric for a multi-class (30-40 classes) classification problem?

• AUC is a binary classification metric, I do not think you can use it for multi-class classification – Robin Nicole Apr 12 '19 at 10:04
• @RobinNicole You are right but it also has been suggested for multi-class classification by binarizing techniques. – Alireza Zolanvari Apr 12 '19 at 10:15
• What do you mean by binarizing technics ? If you have a link I am really interested :) – Robin Nicole Apr 12 '19 at 10:20