Read this before using ROC-AUC as a metric

What is ROC-AUC and when not to use it

No metric is perfect.

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Understand what a metric hides and promotes.

When a measure becomes a target, it ceases to be a good measure — Goodhart’s law

When you improve a metric, you primarily improve what the metric favours. Since no metric can measure everything, chasing one blindly can be dangerous. I want to explore what this means for ROC-AUC.

The receiver operating characteristics curve or ROC curve is …

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