It's published in Nature Machine Intelligence: https://www.nature.com/articles/s42256-018-0002-3 https://www.nature.com/articles/s42256-018-0002-3 But at leas

It's published in Nature Machine Intelligence: https://www.nature.com/articles/s42256-018-0002-3 https://www.nature.com/articles/s42256-018-0002-3 But at least this article seems to be available as Open Access. I am not sure if this is temporary or not.