采用偏最小二乘法，Relief计算分类权重，isodata 迭代自组织的数据分析，使用大量的有限元法求解偏微分方程，对于初学者具有参考意义，从先验概率中采样，计算权重。- Partial least squares method, Relief computing classification weight, Isodata iterative self-organizing data analysis, Using a large number of finite element method to solve partial differential equations, For beginners with a reference value, Sampling　a priori probability, calculate the weight.