Many (and one) area under the curve values {Rfast}

Many area under the curve values

Description

Many area under the curve values.

Usage

colaucs(group, preds)
auc(group, preds)

Arguments

group

A numerical vector with two values, one of which must be strictly 1.

preds

A numerical matrix with scores, probabilities or any other measure. In the case of auc this is a vector.

Details

The AUCs are calculated column-wise or just an AUC if the vector function is used.

Value

A vector with length equal to the number of columns of the "preds" argument, with the AUC values for each column. If the "auc" function is used then a signle number is returned.

Author(s)

Michail Tsagris

R implementation and documentation: Michail Tsagris <[e-mail]> and Manos Papadakis <[e-mail]>.

See Also

ttests, ttest, ftests

Examples

## 200 variables, hence 200 AUCs will be calculated
x <- matrix( rnorm(100 * 200), ncol = 200 )
ina <- rbinom(100, 1, 0.6)
colaucs(ina, x)
a <- colaucs(ina, x) 
b <- auc(ina, x[, 1])
x <- NULL