# 导入数据，预处理


#定义变量
work_space=""
file_path_d1=""
file_path_d1=""
file_path_d1=""
file_path_d1=""


d1=read.csv(file_path_d1,header = FALSE)
d2=read.csv(file_path_d2,header = FALSE)
d3=read.csv(file_path_d3,header = FALSE)
d4=read.csv(file_path_d4,header = FALSE)