leaf2

leaf2

#データの読み込み
leaf=read.csv("leaf.csv",header = F,
colClasses=c("factor",rep("numeric",15)),
col.names=c("Class","Specimen Number","Eccentricity","Aspect Ratio","Elongation","Solidity","Stochastic Convexity","Isoperimetric Factor","Maximal Indentation Depth","Lobedness","Average Intensity","Average Contrast","Smoothness","Third moment","Uniformity","Entropy"))
leaf=leaf[,-2]

y=leaf$Class
x=leaf[,-1]

train <- seq.int(1, 340, by=2)
test <- setdiff(1:340, train)


#線形判別分析
library(MASS)
leaf.lda=lda(x[train,],y[train])
test.lda=predict(leaf.lda, x[test,])

lda.tab=table(y[test],test.lda$class)
lda.tab
sum(lda.tab[row(lda.tab)==col(lda.tab)])/sum(lda.tab) #識別率


#線形SVM
library(e1071)
leaf.svm=svm(Class~.,leaf[train,],method = "C-classification",
           kernel = "linear",
           cost = 2.5 )
test.svm=predict(leaf.svm, x[test,])

svm.tab=table(y[test],test.svm)
svm.tab
sum(svm.tab[row(svm.tab)==col(svm.tab)])/sum(svm.tab) #識別率

#RBFカーネルを用いたSVM
library(e1071)
leaf.rbf_svm=svm(Class~.,leaf[train,],method = "C-classification",
           kernel = "radial",
           cost = 20 )
test.rbf_svm=predict(leaf.rbf_svm, x[test,])

rbf_svm.tab=table(y[test],test.rbf_svm)
rbf_svm.tab
sum(rbf_svm.tab[row(rbf_svm.tab)==col(rbf_svm.tab)])/sum(rbf_svm.tab) #識別率


#randomforest
library(randomForest)
tuneRF(x[train,],y[train],doBest=T)
leaf.rf=randomForest(x[train,],y[train],mtry=6)

test.rf = predict(leaf.rf, x[test,])
rf.tab=table(y[test],test.rf)
sum(rf.tab[row(rf.tab)==col(rf.tab)])/sum(rf.tab) #識別率


#kNN
library(class)
p2=knn(x[train,],x[test,],y[train],k=2)
kNN.tab=table(y[test],p2)
kNN.tab
sum(kNN.tab[row(kNN.tab)==col(kNN.tab)])/sum(kNN.tab) #識別率

p5=knn(x[train,],x[test,],y[train],k=5)
kNN.tab=table(y[test],p5)
kNN.tab
sum(kNN.tab[row(kNN.tab)==col(kNN.tab)])/sum(kNN.tab) #識別率



#naive bayes
library(e1071)

leaf.nb=naiveBayes(Class~.,data=leaf[train,])
test.nb=predict(leaf.nb,x[test,])
nb.tab=table(y[test],test.nb)
nb.tab
sum(nb.tab[row(nb.tab)==col(nb.tab)])/sum(nb.tab) #識別率