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--- resarch:nlpa:research_concepts [2014/09/25 16:16]
preethac created
+++ resarch:nlpa:research_concepts [2014/10/02 13:58] (current)
preethac
@@ Line 1: / Line 1: @@
-**Bold Text**Manual Annotation/Oracle/Ground Truth
+**Precision(P) and Recall(R)
+**
+Manual Annotation/Oracle/Ground Truth(X Axis)
+\\ System Output(Y Axis)
+|              ^ Yes                  ^ No                 ^
+^ Yes          | True Positive(TP)    | False Positive(FP) |
+^ 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)