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@ironpeace
Created March 1, 2014 12:04
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# 作業ディレクトリの設定
setwd("~/dev/kaggle/ds2014")
# CSVファイルの読み込み
train <- read.csv("train.csv")
test <- read.csv("test.csv")
# summary関数で変数の概要が把握できる
summary(train$duration_previous)
# Min. 1st Qu. Median Mean 3rd Qu. Max. NA's
# 0.000 2.000 5.000 6.004 9.000 15.000 18711
# 属性値が数値の場合は、as.factorを付けて明示的に属性値として扱えるようにする
summary(as.factor(train$A))
# 0 1 2
# 143691 426067 95491
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