But then, about a year ago, DeepMind redesigned the system. In essence, they built the new AlphaGo without help from human moves. They trained it entirely from games where the machine plays against itself—part of a continuing progression toward AI techniques that truly learn on their own. “AlphaGo has become its own teacher,” says David Silver, the project’s lead researcher.
https://www.wired.com/2017/05/googles-alphago-levels-board-g...
But then, about a year ago, DeepMind redesigned the system. In essence, they built the new AlphaGo without help from human moves. They trained it entirely from games where the machine plays against itself—part of a continuing progression toward AI techniques that truly learn on their own. “AlphaGo has become its own teacher,” says David Silver, the project’s lead researcher.
Answer: The machines just train themselves.