ubTomek | R Documentation |
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.
ubTomek(X, Y, verbose = TRUE)
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) |
In order to compute nearest neighbors, only numeric features are allowed.
The function returns a list:
X |
input variables |
Y |
response variable |
id.rm |
index of instances removed |
I. Tomek. Two modifications of cnn. IEEE Trans. Syst. Man Cybern., 6:769-772, 1976.
ubBalance
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)
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