Evaluation

Recall

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In Short

The proportion of actual positives that were correctly identified—of all the things that were true, how many did the agent find.

Avoid common pitfalls

Learn what failures to watch for

High recall means few false negatives. Critical when missing positives is dangerous.

Formula

Recall = True Positives / (True Positives + False Negatives)

When to Prioritize

Fraud detection (catch all fraud)
Security threats (don't miss attacks)
Disease screening (find all cases)

evaluationmetricsclassification

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