The results of the nineth Annual Computer Poker Competition were announced July 14th at the Twenty-Eighth Conference on Artificial Intelligence in Quebec City during the second Computer Poker Symposium. The list of participants will be available shortly.
There were a range of games played, to explore different problems and techniques for intelligent agents in imperfect information games, from traditional two player game theoretic techniques, to multi-player modeling and online learning. This year, the competition used two player limit Hold'em, two player no-limit Hold'em, three player Hold'em, and a three player variant of Kuhn poker. All games had an event using the total-bankroll winner determination rule, to encourage learning techniques. Two player no-limit Hold'em and three player Hold'em also had an instant run-off event that encourages defensive play, as in traditional game theoretic techniques.
The rules for this year's competition called for matches of duplicate poker to help mitigate the effects of "luck" and more accurately determine this year's winner. In total, about 50 million hands of poker were played.
In all of the PDF result files, the top table is a crosstable including all combinations of matches between players in the given variant of poker. Crosstable entries are the expected winnings, in thousandths of a big blind per hand, for the row player. The second value is the 95% confidence interval around the mean. Cells are shaded bright green/red if the row player won/lost by a statistically significant margin (95% confidence.) Cells are shaded light green/red if the row player won/lost by a statistically insignificant margin. If a cell is grey no data is available for that combination of players (e.g., matches of an agent against itself or an agent entered exclusively under a different winner determination rule).
The raw, uncapped result files have a mixture of instant run-off and total bankroll agents, with no further processing or information. For the total bankroll result files, the second table gives the probability that the row player has a higher total bankroll than the column player. The SUM column is simply the sum of the values in the row, and is NOT used in winner determination. For the instant run-off results, the second table gives, for each round of the run-off, the SUM statistic describing the total bankroll performance of the remaining players.
Statistical confidence was not possible for all results. We have noted all such decisions with a '*'. Please see the section discussing the statistical analysis used to generate the results for additional details.