What is a ROC-AUC curve?

What is a ROC-AUC curve?

Approach: Define the relationship between True Positive Rate and False Positive Rate.

The Receiver Operating Characteristic (ROC) curve plots the True Positive Rate against the False Positive Rate at various threshold settings. The Area Under the Curve (AUC) measures the entire two-dimensional area underneath the entire ROC curve from (0,0) to (1,1).

Follow-up: What does an AUC of 0.5 represent?

Key concepts: tpr, fpr, threshold.