中文说明：
斯皮尔曼相关性，斯皮尔曼系数一般有两个公式，由排行差分集合d计算而得（公式一）由排行集合x、y计算而得（斯皮尔曼等级相关系数同时也被认为是经过排行的两个随机变量的皮尔逊相关系数，以下实际是计算x、y的皮尔逊相关系数）（公式二）
English Description：
Spearman correlation, Spearman coefficient generally has two formulas, which are calculated by ranking difference diversity and D (formula 1) by ranking set X and Y (Spearman rank correlation coefficient is also considered to be the Pearson correlation coefficient of two random variables after ranking, and the following is actually the Pearson correlation coefficient of X and y) (formula 2)