中文说明：包括数据分析、绘图等等,预报误差法参数辨识-松弛的思想，对于初学者具有参考意义，算法优化非常好，几乎没有循环，最小二乘回归分析算法，主要是基于mtlab的程序。
English Description：
Including data analysis, drawing, and so on, the prediction error method for parameter identification - relaxation of thought, for beginners has reference significance and very good algorithm, almost no circulation, least squares regression analysis algorithm is mainly based on MTLAB procedures.