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resarch:nlpa:research_concepts [2014/09/25 16:30] 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 | ||
- | | ^ Heading 1 ^ Heading 2 ^ | ||
- | ^ Yes ^ No ^ | + | |
- | System Output ^ Yes | TRUE POSITIVE | FALSE POSITIVE | | + | Manual Annotation/Oracle/Ground Truth(X Axis) |
- | ^ No | FALSE NEGATIVE | TRUE NEGATIVE | | + | \\ 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) |