[wiz21c]

Public in the sense of non proprietary, in this case most likely universities.

My question was more : Google probably based its tools on existing tools, and those most likely come from universities (research paper, computer infrastructures, etc.). So what are those tools, where are they ?

[Choco31415]

Google originally used Torch7 as their ML library, but shifted to use TensorFlow in April 2016. TensorFlow is written by Google itself.

AlphaGo itself uses a method that combines Monte Carlo tree search with value and policy NN. All NN used are concurrent NN. The specifics are in a paper by David Silver et al: https://dvc0t0mx8dl84.cloudfront.net/wp-content/uploads/2016...