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#' Intermediate Binned Dataset
#'
#' Retrieves the transformed dataset returned from HybridFS function
#' @param input.df Input data frame that contains the target variable and predictor variables with no missing values. Predictors can be either categorical or continuous.
#' @param target.var.name Name of binary target variable. Target variables should be numeric with only two distinct values (0, 1)
#' @return \item{TransformedData}{A data frame that contains the transformed dataset used in the HybridFS function}
#' @export
#' @examples
#' BinnedData=FinalBinnedData(input.df=validation,target.var.name="Survived")
FinalBinnedData <- function(input.df, target.var.name){
data<- as.data.frame(input.df)
names(data)[names(data)==target.var.name] <- "DV"
options(java.parameters = "-Xmx1g")
#require(woeBinning)
#subset all integer variables in dataset
allIntVarDF <- data[,sapply(data,is.integer)]
#Int variables with levels less than 12
intVarsLen <- apply(allIntVarDF,2,function(i) length(unique(i))<=12)
intvar<-names(intVarsLen)
#Int variables with more than 12 levels
intbin_var <- allIntVarDF[,names(intVarsLen[intVarsLen==FALSE])]
intbin_var2<- names(intbin_var)
numvars <- names(data[,sapply(data,is.numeric)])
numbin_var<-setdiff(numvars,intvar)
#Supervised Binning of variables based of woe
binning <- woeBinning::woe.binning(data, 'DV', c(numbin_var,intbin_var2))
tabulate.binning <- woeBinning::woe.binning.table(binning)
#Adding binned variables to dataset
TransformedData <- woeBinning::woe.binning.deploy(data, binning)
return(TransformedData)
}
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