https://en.wikipedia.org/wiki/Deep_learning

http://colah.github.io/
http://colah.github.io/posts/2015-09-NN-Types-FP/
http://colah.github.io/posts/2015-01-Visualizing-Representations/
http://colah.github.io/posts/2014-07-NLP-RNNs-Representations/
http://colah.github.io/posts/2014-03-NN-Manifolds-Topology/

https://habrahabr.ru/company/microsoft/blog/313318/
https://habrahabr.ru/company/microsoft/blog/314934/

https://explosion.ai/blog/deep-learning-formula-nlp

articles:
https://hackernoon.com/tagged/deep-learning