中文说明： 可以实现模式识别领域的数据的分类及回归，是机器学习的例程，自写曲率计算函数 ,有详细的注释，有PMUSIC 校正前和校正后的比较，分数阶傅里叶变换计算方面。
English Description：
It can realize the classification and regression of data in the field of pattern recognition. It is a routine of machine learning. It can write curvature calculation function, have detailed notes, compare pmusic before and after correction, and calculate fractional Fourier transform.