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我试图用rpart在R中创建一个decisiontree。我如何使用rpart创建一棵简单的树?
#rm(list = ls())
cat("\014")
library("rpart")
#data
mf <- factor(c("m","m","f","f","m","f","m"))
heights <- c(180, 175 , 160, 166, 185, 170, 190)
x = data.frame(cbind(heights, mf))
#create tree
fit <- rpart(mf ~ ., data = x, method = "anova")
predicted <- predict(fit,character = 180)
我预计“预测”给我一个“m”或“f”,但我得到的只是一个微不足道的数字。 为了得到一封信,我需要改变什么?
感谢