参看博客：
1.https://www.cnblogs.com/skyme/p/4651331.html
2.https://blog.csdn.net/continueoo/article/details/77893587
HMM学习
转载于:https://www.cnblogs.com/liutianrui1/p/10243358.html
参看博客：
1.https://www.cnblogs.com/skyme/p/4651331.html
2.https://blog.csdn.net/continueoo/article/details/77893587
转载于:https://www.cnblogs.com/liutianrui1/p/10243358.html