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AI wins final match won series 4-1

Posted By: Taper_Mike
Date: Thursday, 17 March 2016, at 11:08 a.m.

In Response To: AI wins final match won series 4-1 (AP)

I have not read any of the published information about AlphaGo. What I gleaned from the interviews of DeepMind team members was that the policy network is like the move filter in a backgammon program. Given the set of all possible moves in a given position, the policy network (which is a neural net) selects those moves that should participate in a tree search. It does this without trying to assess which move is better than another. All it does is decide which moves should be ignored.

The value network (which is a separate neural net) accepts a board position as input, along with the player whose turn it is to move next, and produces a estimate of winning chances for that player.

Is the value network only employed on the bottom leaves of a tree search? That might be so, but I do not know exactly when it is employed.

Mike

Messages In This Thread

• AI wins final match won series 4-1
  ed olaughlin -- Tuesday, 15 March 2016, at 6:05 p.m.
  • AI wins final match won series 4-1
    Trunky -- Tuesday, 15 March 2016, at 7:30 p.m.
  • AI wins final match won series 4-1
    eXtreme Gammon -- Wednesday, 16 March 2016, at 2:41 a.m.
    • AI wins final match won series 4-1
      Keene -- Wednesday, 16 March 2016, at 2:49 p.m.
    • AI wins final match won series 4-1
      AP -- Wednesday, 16 March 2016, at 4:42 p.m.
      • AI wins final match won series 4-1
        Maik Stiebler -- Wednesday, 16 March 2016, at 7:17 p.m.
        • AI wins final match won series 4-1
          Karol Szczerek -- Thursday, 17 March 2016, at 5:57 a.m.
          • AI wins final match won series 4-1
            Maik Stiebler -- Thursday, 17 March 2016, at 7:31 a.m.
          • AI wins final match won series 4-1
            Frank Berger -- Thursday, 17 March 2016, at 9:41 p.m.
            • AI wins final match won series 4-1
              Timothy Chow -- Thursday, 24 March 2016, at 12:41 a.m.
      • AI wins final match won series 4-1
        Taper_Mike -- Thursday, 17 March 2016, at 11:08 a.m.
        • AI wins final match won series 4-1
          Taper_Mike -- Thursday, 17 March 2016, at 11:12 a.m.