unbalanced (version 2.0)

ubTomek: Tomek Link

Description

The function finds the points in the dataset that are tomek link using 1-NN and then removes only majority class instances that are tomek links.

Usage

ubTomek(X, Y, verbose = TRUE)

Arguments

X

the input variables of the unbalanced dataset.

Y

the response variable of the unbalanced dataset. It must be a binary factor where the majority class is coded as 0 and the minority as 1.

verbose

print extra information (TRUE/FALSE)

Value

The function returns a list:

X

input variables

Y

response variable

id.rm

index of instances removed

Details

In order to compute nearest neighbors, only numeric features are allowed.

References

I. Tomek. Two modifications of cnn. IEEE Trans. Syst. Man Cybern., 6:769-772, 1976.

See Also

ubBalance

Examples

library(unbalanced)
data(ubIonosphere)
n<-ncol(ubIonosphere)
output<-ubIonosphere$Class
input<-ubIonosphere[ ,-n]

data<-ubTomek(X=input, Y= output)
newData<-cbind(data$X, data$Y)