AI Glossary

Precision

Also called positive predictive value

What does “Precision” mean?

Precision: The share of predictions labeled positive that are truly positive. High precision means the system raises relatively few false alarms.

Precision visual guide: The share of predictions labeled positive that are truly positive. High precision means the system raises relatively few false alarms.
Visual guide Open full size (new tab)

What is an example of “Precision”?

If eight of ten emails flagged as spam really are spam, precision is 80 percent.

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See also

RecallTermF1 scoreTermConfusion matrixTermClassificationTerm

Same topic

Area under the ROC curveTermClassification accuracyTermDecision thresholdTermFalse negativeTermFalse positiveTerm