中文说明：EM算法的MATLAB实现,EM算法是HMM中用于随机过程模型参数训练的经典算法-the inplement of algorithm EM with MATLAB，the algorithm is a claasical mathod which is used to train the patameter of the HHM model.
English Description：
EM algorithm is a classical algorithm used to train the patameter of the HHM model