Difference between revisions of "Precision and recall"
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Zeno Gantner (talk | contribs) m (moved Precision and Recall to Precision and recall) |
Zeno Gantner (talk | contribs) |
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| − | '''Precision''' or ''' | + | '''Precision''' or '''positive predictive value''' is a measure for exactness and '''recall''' or '''sensitivity''' is a measure of completeness. |
They range from 0 to 1 and the best possible value for both of them is 1. | They range from 0 to 1 and the best possible value for both of them is 1. | ||
| − | Precision = TruePositive / (TruePositive + FalsePositive) | + | :Precision = TruePositive / (TruePositive + FalsePositive) |
| − | Recall = TruePositive / (TruePositive + FalseNegative) | + | :Recall = TruePositive / (TruePositive + FalseNegative) |
== External links == | == External links == | ||
Revision as of 07:05, 17 July 2011
Precision or positive predictive value is a measure for exactness and recall or sensitivity is a measure of completeness. They range from 0 to 1 and the best possible value for both of them is 1.
- Precision = TruePositive / (TruePositive + FalsePositive)
- Recall = TruePositive / (TruePositive + FalseNegative)
