中文说明：代码里有很完整的注释和解释，最小二乘回归分析算法，使用混沌与分形分析的例程，已调制信号计算其普相关密度，最大似然（ML）准则和最大后验概率（MAP）准则，包括主成分分析、因子分析、贝叶斯分析。
English Description：
Very complete the comment in the code and explanation, least-squares regression analysis method using chaos and fractal analysis routines, Pu relative density modulated signal to calculate the maximum likelihood (ML) guidelines and maximum a posteriori (MAP) guidelines, such as principal component analysis, factor analysis, Bayesian analysis.