Attention? Attention!

[Updated on 2018-10-28: Add Pointer Network and the link to my implementation of Transformer.]
[Updated on 2018-11-06: Add a link to the implementation of Transformer model.]
[Updated on 2018-11-18: Add Neural Turing Machines.]
[Updated on 2019-07-18: Correct the mistake on using the term “self-attention” when introducing the show-attention-tell paper; moved it to Self-Attention section.]
[Updated on 2020-04-07: A follow-up post on improved Transformer models is here.]