liver (version 1.9)

conf.mat: Confusion Matrix

Description

Create a Confusion Matrix.

Usage

conf.mat( pred, actual, cutoff = NULL, reference = NULL, 
          proportion = FALSE, dnn = c( "Prediction", "Actual" ), ... )

Arguments

pred

a vector of estimated values.

actual

a vector of actual values.

cutoff

cutoff value for the case that pred is vector of probabilites.

reference

a factor of classes to be used as the true results.

proportion

Logical: FALSE (default) for a confusion matrix with number of cases. TRUE, for a confusion matrix with the proportion of cases.

dnn

the names to be given to the dimensions in the result (the dimnames names).

…

options to be passed to table.

Value

the results of table on pred and actual.

See Also

conf.mat.plot, accuracy

Examples

# NOT RUN {
pred   = c( "no", "yes", "yes", "no", "no", "yes", "no", "no" )
actual = c( "yes", "no", "yes", "no", "no", "no", "yes", "yes" )

conf.mat( pred, actual )
conf.mat( pred, actual, proportion = TRUE )
# }