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2006 AAAI Computer Poker Competition

2006 AAAI Computer Poker Competition. Michael Littman Rutgers University. Martin Zinkevich Christian Smith Luke Duguid U of Alberta. What is Poker?. The OR View A partial information game with over 10 18 states. The AI View A huge opponent modeling challenge. The Public View

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2006 AAAI Computer Poker Competition

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  1. 2006 AAAI Computer Poker Competition Michael Littman Rutgers University Martin Zinkevich Christian Smith Luke Duguid U of Alberta

  2. What is Poker? • The OR View • A partial information game with over 1018 states. • The AI View • A huge opponent modeling challenge. • The Public View • Really popular! Lots of fun!

  3. What is the Game? • Play 1000 hands of Heads-up Limit Texas Hold’em Poker against an opponent • Reset bots, switch seats, and play again with the same hands. • lower variance • more fair • Repeat 6-20 times • Can treat the outcome of the duplicate match as a random variable which we have sampled several times.

  4. How do you win? • Make money! • Bankroll Competition • Against overall, have the maximum total bankroll • Highlights opponent modeling and learning • Series Competition • Against individuals, have positive bankroll • Highlights the OR problem of “solving” the game

  5. The Teams • Hyperborean: University of Alberta Edmonton, Canada • Bluffbot: Finland • Monash: Monash University, Australia • Teddy: USA • Gs2: Carnegie Mellon University, Pittsburgh, USA

  6. Before I Begin • There is a period that is allocated for competitors to contest the results that has yet to expire.

  7. Bankroll Results

  8. Bankroll Results

  9. Bankroll Results

  10. Bankroll Results

  11. Bankroll-Heads Up

  12. Bankroll-Heads Up (Small Bets/Hand)

  13. Bankroll-Overall Significance • Difference between Bluffbot and U of Alberta • 0.2982 small bets/hand • 0.0190 standard deviations

  14. The Most Interesting Result • In the bankroll competition, in head-to-head, BluffBot beat Monash who beat Teddy who beat BluffBot • A practical example of the non-transitivity of poker

  15. Results-Series (Small Bets/Hand)

  16. Results-Series (Small Bets/Hand)

  17. Things to Never Assume • All bots will work on the competition machines the first time • The server code is bug-free • Everybody has a common idea of the rules of poker (or even heads-up Texas Hold’em) • People can write code instantaneously

  18. Exhibitionary Aspects of the Competition • Bots submitted late • Bots debugged after the deadline • The time limit was very large for the series competition

  19. Maybe Next Year • More advance notice • Competitors need access to one of the machines they will use • Server code needs to be frozen before the competition begins • More variants of poker need to be included, especially: • >2 players • >1000 hands • There has to be a 7 sec/hand time limit

  20. Is Poker “Solved”? • No one has ever solved a four-round abstraction of poker without a partition into the early game and the late game. • The game of poker is also about your opponent. For instance, playing rock-paper-scissors against a four-year-old is different than against an adult.

  21. Next Year • This summer: write the rules • This winter: write the code • Next summer: next competition

  22. Are You Interested? • Come talk to us • maz@cs.ualberta.ca • bowling@cs.ualberta.ca

  23. Summary • The poker competition brought together five teams in two competitions. • The competition was very close, and very interesting, non-transitive (A beats B beats C beats A) performance was observed. • A freeware codebase was developed for future competitions.

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