Well-Supported versus Approximate Nash Equilibria: Query Complexity of Large Games

ITCS, 2017.

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Abstract:

We study the randomized query complexity of approximate Nash equilibria (ANE) in large games. We prove that, for some constant $\epsilon>0$, any randomized oracle algorithm that computes an $\epsilon$-ANE in a binary-action, $n$-player game must make $2^{\Omega(n/\log n)}$ payoff queries. For the stronger solution concept of well-suppor...More

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