Ordered Twoing Split function for RPART Ordinal Method
有序两分Split函数的软件rpart序法
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This function is not invoked directly by the user but is used for its effects in the twoing (ordered twoing) splitting method.
此功能不是由用户直接调用,但用于其在两分(有序的两分)分裂法的影响。