重要参数的提取，从先验概率中采样，计算权重，最大似然（ML）准则和最大后验概率（MAP）准则，基于matlab GUI界面设计,是机器学习的例程，双向PCS控制仿真，Relief计算分类权重。- Extract important parameters, Sampling　a priori probability, calculate the weight, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Based on matlab GUI interface design, Machine learning routines, Two-way PCS control simulation, Relief computing classification weight.