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| Robust Strategies and Counter Strategies http://poker-ai.org/phpbb/viewtopic.php?f=25&t=2971 |
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| Author: | abanger [ Sat Mar 05, 2016 6:33 pm ] |
| Post subject: | Robust Strategies and Counter Strategies |
Robust Strategies and Counter Strategies: From Superhuman to Optimal Play by: Michael Bradley Johanson Abstract Games have been used as a testbed for artificial intelligence research since the earliest conceptions of computing itself. The twin goals of defeating human professional players at games, and of solving games outright by creating an optimal computer agent, have helped to drive practical research in this field. Deep Blue defeating Kasparov at chess and Chinook solving the game of checkers serve as milestone events in the popular understanding of artificial intelligence. However, imperfect information games present new challenges and require new research. The Abstraction-Solving-Translation procedure for approaching such games involves abstracting a game down to a tractable size, solving the abstract game to produce a strong abstract strategy, and translating its decisions into the real game as needed. Related challenges include principled evaluation of the resulting computer agents, and using opponent models to improve in-game performance against imperfect adversaries. The papers presented in this thesis encompass the complete end-to-end task of creating strong agents for extremely large games by using the Abstraction-Solving-Translation procedure, and we present a body of research that has made contributions to each step of this task. We use the game of poker as a testbed domain to validate our research, and present two milestone accomplishments reached as a result: the first victory of a computer agent over human professionals in a meaningful poker match, and the first solution to any imperfect information game played competitively by humans. https://webdocs.cs.ualberta.ca/~johanson/publications/theses/2016-johanson-phd-thesis/2016-johanson-phd-thesis.pdf |
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