Artificial intelligence · Grades 9–12
Recall from true positives and false negatives · formula reference
The denominator counts actual positives, not predicted positives.
Formula
The denominator counts actual positives, not predicted positives.
recall = TP/(TP+FN)
Worked example
A binary classifier has TP=8 and FN=51. Calculate positive-class recall as a fraction between 0 and 1. Round the final result to 4 decimal places if needed.
Of 59 actual positives, 8 were detected.
0.1356
Prerequisites and checking
Algebra and the topic definitions. Keep units and rounding consistent. State the model conditions before applying the formula.
Further reading and review references
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