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3
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1 args <- commandArgs(T)
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2
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3 arg1 <- args[1]
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4 arg2 <- args[2]
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5 arg3 <- args[3]
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6 arg4 <- args[4]
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7 arg5 <- args[5]
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8 arg6 <- args[6]
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9 arg7 <- args[7]
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10 arg8 <- args[8]
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11
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12 library(caret)
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13 load(arg1)
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14
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15 RAWDATA <- dataX
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16 RAWDATA$outcome <- dataY
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17 rawData <- dataX
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18 predictorNames <- names(rawData)
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19
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20 isNum <- apply(rawData[,predictorNames, drop = FALSE], 2, is.numeric)
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21 if(any(!isNum)) stop("all predictors in rawData should be numeric")
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22
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23 colRate <- apply(rawData[, predictorNames, drop = FALSE],
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24 2, function(x) mean(is.na(x)))
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25 colExclude <- colRate > 0.01
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26 if(any(colExclude)){
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27 predictorNames <- predictorNames[-which(colExclude)]
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28 rawData <- RAWDATA[, c(predictorNames,"outcome")]
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29 } else {
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30 rawData <- RAWDATA
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31 }
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32 rowRate <- apply(rawData[, predictorNames, drop = FALSE],
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33 1, function(x) mean(is.na(x)))
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34
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35 rowno <- dim(rawData)[1]
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36 if (rowno <= 1000){
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37 cutoff <- rowno / (rowno * 100)
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38 } else if (rowno > 1000 & rowno <= 5000) {
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39 cutoff <- rowno / (rowno * 100 * 0.5 )
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40 } else {
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41 cutoff <- rowno / (rowno * 100 * 0.5 * 0.5)
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42 }
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43 rowExclude <- rowRate > cutoff
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44 if(any(rowExclude)){
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45 rawData <- rawData[!rowExclude, ]
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46 ##hasMissing <- apply(rawData[, predictorNames, drop = FALSE],
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47 ##1, function(x) mean(is.na(x)))
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48
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49 ############################################################################
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50
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51
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52 ###############################################################################
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53 } else {
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54 rawData <- rawData[complete.cases(rawData),]
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55
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56 }
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57
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58 set.seed(1234)
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59
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60 #print(dim(dataX))
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61 #print(dim(rawData))
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62 #print(length(dataY))
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63
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64 nzv <- nearZeroVar(rawData[,1:(length(rawData) - 1)])
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65 if(length(nzv) > 0) {
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66 #nzvVars <- names(rawData)[nzv]
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67 rawData <- rawData[,-nzv]
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68 #rawData$outcome <- dataY
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69 }
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70
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71 predictorNames <- names(rawData)[names(rawData) != "outcome"]
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72
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73 dx <- rawData[,1:length(rawData)-1]
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74 dy <- rawData[,length(rawData)]
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75 corrThresh <- as.numeric(arg8)
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76 highCorr <- findCorrelation(cor(dx, use = "pairwise.complete.obs"),corrThresh)
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77 dx <- dx[, -highCorr]
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78 subsets <- seq(1,length(dx),by=5)
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79 normalization <- preProcess(dx)
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80 dx <- predict(normalization, dx)
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81 dx <- as.data.frame(dx)
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82
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83 if (arg4 == "lmFuncs"){
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84 ctrl1 <- rfeControl(functions = lmFuncs,
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85 method = arg5 ,
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86 repeats = as.numeric(arg6),
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87 number = as.numeric(arg7),
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88 verbose = FALSE)
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89 } else if(arg4 == "rfFuncs"){
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90 ctrl1 <- rfeControl(functions = rfFuncs,
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91 method = arg5 ,
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92 repeats = as.numeric(arg6),
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93 number = as.numeric(arg7),
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94 verbose = FALSE)
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95 }else if (arg4 == "treebagFuncs"){
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96 ctrl1 <- rfeControl(functions = treebagFuncs,
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97 method = arg5 ,
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98 repeats = as.numeric(arg6),
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99 number = as.numeric(arg7),
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100 verbose = FALSE)
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101 }else {
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102
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103 ctrl1 <- rfeControl(functions = nbFuncs,
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104 method = arg5 ,
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105 repeats = as.numeric(arg6),
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106 number = as.numeric(arg7),
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107 verbose = FALSE)
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108 }
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109
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110
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111
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112
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113 Profile <- rfe(dx, dy,sizes = subsets,rfeControl = ctrl1)
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114
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115 pred11 <- predictors(Profile)
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116 save(Profile,file=arg2)
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117 dataX <- rawData[,pred11]
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118 dataY <- rawData$outcome
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119
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120 save(dataX,dataY,file=arg3)
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121 rm(dataX)
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122 rm(dataY)
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123
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