用Allennlp写序列生成Seq2Seq模型
https://zhuanlan.zhihu.com/p/86742343
https://blog.csdn.net/jiangyutongyangyi/article/details/103583532
https://muzhan.blog.csdn.net/article/details/108245066
http://www.pytorch123.com/ThirdSection/SaveModel/#63-cpu-gpu
保存参数 加载参数
https://stackoverflow.com/questions/54227872/saving-loading-models-in-allennlp-package