Tool to compute statistical measures of Precision and Recall. Precision and recall are two statistical measures which can evaluate sets of items, also called predictive value and sensitivity.

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Tool to compute statistical measures of Precision and Recall. Precision and recall are two statistical measures which can evaluate sets of items, also called predictive value and sensitivity.

Answers to Questions

How to calculate Precision?

For a search, the precision is the ratio of the number of pertinent items found over the total number of items found.

F-measure (or F1 score) is the harmonic mean of précision and recall

$$ F = \frac{2 (\text{precision} \times \text{recall})}{(\text{precision} + \text{recall})} $$

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