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resarch:nlpa:research_concepts [2014/09/25 22:21] preethac |
resarch:nlpa:research_concepts [2014/10/02 13:58] (current) preethac |
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| - | **Precision and Recall | + | **Precision(P) and Recall(R) |
| ** | ** | ||
| - | + | ||
| - | Manual Annotation/Oracle/Ground Truth | + | |
| + | Manual Annotation/Oracle/Ground Truth(X Axis) | ||
| + | \\ System Output(Y Axis) | ||
| | ^ Yes ^ No ^ | | ^ Yes ^ No ^ | ||
| - | ^ Yes | True Positive | False Positive | | + | ^ Yes | True Positive(TP) | False Positive(FP) | |
| - | ^ No | False Negative | True Negative | | + | ^ No | False Negative(FN) | True Negative(TN) | |
| + | |||
| + | |||
| + | |||
| + | P= TP/(TP+FP) | ||
| + | |||
| + | R= TP/(TP+FN) | ||
| + | F= 1/(1/P + 1/R)<sup>1/2</sup> | ||
| + | = 2PR/(P + R) | ||
