Papers › Reinforcement Learning Produces Dominant Strategies for the Iterated Prisoner's Dilemma

Reinforcement Learning Produces Dominant Strategies for the Iterated Prisoner's Dilemma

19 Jul 2017arXiv:1707.06307links table onlyarchive 2025-07-28

Marc Harper, Vincent Knight, Martin Jones, Georgios Koutsovoulos, Nikoleta E. Glynatsi, Owen Campbell

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We present tournament results and several powerful strategies for the Iterated Prisoner's Dilemma created using reinforcement learning techniques (evolutionary and particle swarm algorithms). These strategies are trained to perform well against a corpus of over 170 distinct opponents, including many well-known and classic strategies. All the trained strategies win standard tournaments against the total collection of other opponents. The trained strategies and one particular human made designed strategy are the top performers in noisy tournaments also.

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