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Computing Evolutionarily Stable Strategies in Imperfect-Information Games

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  • Sam Ganzfried

Abstract

We present an algorithm for computing evolutionarily stable strategies (ESSs) in symmetric perfect-recall extensive-form games of imperfect information. Our main algorithm is for two-player games, and we describe how it can be extended to multiplayer games. The algorithm is sound and computes all ESSs in nondegenerate games and a subset of them in degenerate games which contain an infinite continuum of symmetric Nash equilibria. The algorithm is anytime and can be stopped early to find one or more ESSs. We experiment on an imperfect-information cancer signaling game as well as random games to demonstrate scalability.

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  • Sam Ganzfried, 2025. "Computing Evolutionarily Stable Strategies in Imperfect-Information Games," Papers 2512.10279, arXiv.org, revised Dec 2025.
    • Handle: RePEc:arx:papers:2512.10279
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    File URL: http://arxiv.org/pdf/2512.10279
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