https://institute.coop/

https://realpython.com/python-testing/

https://www.quora.com/What-are-the-connections-between-machine-learning-and-signal-processing

http://www.fast.ai/2018/04/29/categorical-embeddings/

https://twitter.com/Rainmaker1973/status/1054462683045654529

https://twitter.com/_inside/status/1054551854972129280

https://github.com/tensorboy/PIDOptimizer