一种流形学习算法（很好用），BP神经网络用于函数拟合与模式识别，Relief计算分类权重，从先验概率中采样，计算权重，最小二乘回归分析算法，针对EMD方法的不足。- A fluid manifold learning algorithm (good use), BP neural network function fitting and pattern recognition, Relief computing classification weight, Sampling　a priori probability, calculate the weight, Least-squares regression analysis algorithm, For lack of EMD.