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45 lines
1.2 KiB
R
45 lines
1.2 KiB
R
# VT.TREE.CLASS -----------------------------------------------------------
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#' A reference class to compute subgroups by classifiation tree
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#'
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#' @include tree.R
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VT.tree.class <- setRefClass(
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Class = "VT.tree.class",
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contains = "VT.tree",
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methods = list(
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initialize = function(vt.difft, threshold = 0.05, sens = ">", screening = NULL){
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callSuper(vt.difft, threshold, sens, screening)
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.self$name <- .self$computeNameOfTree("class")
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if(.self$sens == ">"){
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.self$outcome <- ifelse(.self$vt.difft$difft >= .self$threshold, 1, 0)
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} else {
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.self$outcome <- ifelse(.self$vt.difft$difft <= .self$threshold, 1, 0)
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}
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},
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run = function(...){
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callSuper()
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data <- .self$getData()
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if(sum(data[,1]) != 0){
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.self$tree <- rpart::rpart(as.formula(paste(.self$name, ".", sep = "~")), data = data, method = "class", ...)
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.self$Ahat <- as.numeric(predict(.self$tree, data, type = "class")) - 1
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}else{
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.self$Ahat <- .self$outcome
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}
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return(invisible(tree))
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},
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sumup = function(){
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cat("Classification Tree")
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callSuper()
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}
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)
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)
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VT.tree.class$lock("threshold", "vt.difft") |