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Questions tagged [self-play]

For questions about the technique of "self play" in reinforcement learning in relation to combinatorial games and games in general.

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3 votes
2 answers
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How can both agents know the terminal reward in self-play reinforcement learning?

There seems to be a major difference in how the terminal reward is received/handled in self-play RL vs "normal" RL, which confuses me. I implemented TicTacToe the normal way, where a single ...
user3877351's user avatar
6 votes
2 answers
3k views

Why does self-playing tic-tac-toe not become perfect?

I trained a DQN that learns tic-tac-toe by playing against itself with a reward of -1/0/+1 for a loss/draw/win. Every 500 episodes, I test the progress by letting it play some episodes (also 500) ...
user3877351's user avatar
3 votes
1 answer
328 views

How does MuZero learn to play well for both sides of a two-player game?

I'm coding my own version of MuZero. However, I don't understand how it supposed to learn to play well for both players in a two-player game. Take Go for example. If I use a single MCTS to generate an ...
Ziofil's user avatar
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3 votes
1 answer
221 views

Given these two reward functions, what can we say about the optimal Q-values, in self-play tic-tac-toe?

This corresponds to Exercise 1.1 of Sutton & Barto's book (2nd edition), and a discussion followed from this answer. Consider the following two reward functions Win = +1, Draw = 0, Loss = -1 Win =...
pg2455's user avatar
  • 221