# F2-Measure

(Redirected from F2 Metric)

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An F2-Measure is an F-measure where the β is equal to 2.

**AKA:**[math]\displaystyle{ F_2 }[/math].**Context:**- It can be calculated as:
- It can (typically) place more emphasis on R than P, making it more useful in situations where missing positive cases (high FN) is more costly.
- It can (often) be used in scenarios like medical diagnosis or document retrieval where failing to identify a relevant case (low recall) is more detrimental than incorrectly identifying irrelevant cases (lower precision).
- ...

**Counter-Example(s):**- an F1-Measure.
- an F0.5-Measure.

**See:**Harmonic Mean, Precision, Recall, True Positives, False Positives, False Negatives.