复化三点Gauss-lengend公式求pi，独立成分分析算法降低原始数据噪声，快速扩展随机生成树算法，一种噪声辅助数据分析方法,对于初学者具有参考意义，采用加权网络中节点强度和权重都是幂率分布的模型。- Complex of three-point Gauss-lengend the Formula pi, Independent component analysis algorithm reduces the raw data noise, Rapid expansion of random spanning tree algorithm, A noise auxiliary data analysis method, For beginners with a reference value, Using weighted model nodes in the network strength and weight are power law distribution.