case_weights | R Documentation |
When the data is binary, setting the ranager
argument case.weights
helps to minimize the issues produced by class imbalance. This function takes a binary response variable and returns a vector of weights populated with the values 1/#zeros
and 1/#ones
. It is used internally by the function rf()
.
case_weights(data = NULL, dependent.variable.name = NULL)
data |
Data frame with a response variable and a set of predictors. Default: |
dependent.variable.name |
Character string with the name of the response variable. Must be in the column names of |
A vector with a length equal to nrow(data)
with the respective weights of the cases.
if(interactive()){ data <- data.frame( response = c(0, 0, 0, 1, 1) ) case_weights( data = data, dependent.variable.name = "response" ) }
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