中文说明：本程序的性能已经超过其他算法，现代信号处理中谱估计在matlab中的使用，人脸识别中的光照处理方法，用谱方法计算流体力学一些流动现象的整体稳定性,一种流形学习算法（很好用），这是第二能量熵的matlab代码。
English Description：
The performance of the program has more than other algorithms, modern signal processing in spectrum estimation in MATLAB, the overall stability of the face recognition in the light shining processing method, using a spectral method to calculate fluid mechanics some flow phenomena, a manifold learning algorithm (very good). This is the second energy entropy matlab code.