多元数据分析的主分量分析投影，从先验概率中采样，计算权重，在matlab环境中自动识别连通区域的大小,BP神经网络用于函数拟合与模式识别，采用加权网络中节点强度和权重都是幂率分布的模型。- Principal component analysis of multivariate data analysis projection, Sampling　a priori probability, calculate the weight, Automatic identification in the matlab environment the size of the connected area, BP neural network function fitting and pattern recognition, Using weighted model nodes in the network strength and weight are power law distribution.