https://blog.csdn.net/zhaojc1995/article/details/80572098
本文部分参考和摘录了以下文章，在此由衷感谢以下作者的分享！
https://zhuanlan.zhihu.com/p/28054589
https://blog.csdn.net/qq_16234613/article/details/79476763
http://www.cnblogs.com/pinard/p/6509630.html
https://zhuanlan.zhihu.com/p/28687529
http://www.cnblogs.com/pinard/p/6509630.html
https://zhuanlan.zhihu.com/p/26892413
https://zhuanlan.zhihu.com/p/21462488?refer=intelligentunit
https://www.jianshu.com/p/9dc9f41f0b29
http://colah.github.io/posts/2015-08-Understanding-LSTMs/
https://zhuanlan.zhihu.com/p/28749444