precision: Precision
| precision | R Documentation |
Precision
Description
Computes precision (aka positive predictive value) from a confusion matrix, see confusion. Precision is defined as TP/(TP + FP), where TP are true positives and FP are false positives. If TP + FP = 0, 0 is returned.
Usage
precision(confusion)
Arguments
confusion |
Confusion matrix as obtained from confusion |
Value
A numeric in [0,1].
