All glossary terms
conceptsbeginner

Precision

The proportion of predicted positive instances that are actually positive, measuring false positive rate.

In more detail

Precision = TP / (TP + FP). Answers: "Of the cases we predicted as positive, how many were correct?" Important when false positives are costly. Used with recall to get F1 score.

Examples

  • Email spam detection
  • Medical diagnosis
  • Fraud detection

Related terms

RecallF1 Score
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