Contain two matlab code : - ApEn and per_entr to calculate entropy of permutation

排列熵和加权排列熵的matlab程序，可用于异常变化检测(permutation entropy and weighted permutation entropy)

针对排列熵算法做出的改进，广义相位排列熵，通过调整参数，有效提升了排列熵算法的性能。(Aiming at the improvement of permutation entropy algorithm, generalized phase permutation entropy improves the performance of permutation entropy algorithm by adjusting parameters)

VMD代码，该程序对信号进行经验模式分解，可以用于故障信号处理，还可以与很对方法结合。如，排列熵，emd,vmd,等，包含VMD、EMD、EEMD工具箱，可用于变分模态分解、EMD以及EEMD谐波检测对对比分析(VMD code, the program for empirical mode decomposition of signals, can be used for fault signal processing, can also be combined with a very goo