Reference : Seq2Seq - SoojungHong/Sequence2Sequence GitHub Wiki
NLP From Scratch: Translation with a Sequence to Sequence Network and Attention
https://pytorch.org/tutorials/intermediate/seq2seq_translation_tutorial.html
Saving and Loading model
https://pytorch.org/tutorials/beginner/saving_loading_models.html
paper
Learning Phrase Representation using RNN Encoder-Decoder for statistical machine translation https://arxiv.org/pdf/1406.1078.pdf
Reference book https://github.com/jacobeisenstein/gt-nlp-class/blob/master/notes/eisenstein-nlp-notes-10-15-2018.pdf