1. https://github.com/huggingface/transformers/tree/master/examples/seq2seq
  2. https://github.com/tensorflow/models/tree/master/research/textsum
  3. https://github.com/atulkum/pointer_summarizer
  4. https://github.com/vrindav/just-news-it
  5. https://github.com/pytorch/fairseq
  6. https://github.com/abisee/pointer-generator