gettptnfpfn-defunct: Get number of TP, FP, TN and FN

In ROCit: Performance Assessment of Binary Classifier with Visualization

Get number of TP, FP, TN and FN

Description

Function gettptnfpfn calculates the number of true positive (TP), false positive (FP), true negative (TN) and false negative (FN), if certain depth of the observations are treated as positive. Generally it applies to the observations that are rank-ordered with respect to some diagnostic score.

Arguments

x	A response vector, consisting of only 1's and 0's.
depth	Depth, up to which the positive predictions are made.
npos	Number of positive responses.
nneg	Number of negative responses.

Details

Function gettptnfpfn calculates the number of TP, FP, TN, FN at specified depth. This is designed for numeric 1/0 coding of the responses. Usually it applies to the observations, which are rank-ordered with respect to some diagnostic score.

Value

A numeric vector of length 4 indicating number of TP , FP, TN, FN, respectively.

See Also

ROCit-defunct

ROCit documentation built on May 29, 2024, 2:15 a.m.