复化三点Gauss-lengend公式求pi，Relief计算分类权重，阵列信号处理的高分辨率估计，使用拉亚普诺夫指数的公式，用于信号特征提取、信号消噪，使用大量的有限元法求解偏微分方程。- Complex of three-point Gauss-lengend the Formula pi, Relief computing classification weight, High-resolution array signal processing estimates, Raya Punuo Fu index using the formula, For feature extraction, signal de-noising, Using a large number of finite element method to solve partial differential equations.