"X = df.values[:, 0:2] # get input values from first two columns\n", "y = df.values[:, 2] # get output values from last coulmn\n", "* There are total 97 training ...

李东风老师将《R语言教程》的草稿放在其主页上，仍还在更新中，内容翔实且紧跟潮流。地址为：http://www.math.pku.edu.cn/teachers ...