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Computing Equilibria in Anonymous Games

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2 Author(s)
Daskalakis, C. ; Univ. of California, Berkeley, Berkeley ; Papadimitriou, C.

We present efficient approximation algorithms for finding Nash equilibria in anonymous games, that is, games in which the players utilities, though different, do not differentiate between other players. Our results pertain to such games with many players but few strategies. We show that any such game has an approximate pure Nash equilibrium, computable in polynomial time, with approximation O(s2lambda), where s is the number of strategies and lambda is the Lipschitz constant of the utilities. Finally, we show that there is a PTAS for finding an isin-approximate Nash equilibrium when the number of strategies is two.

Published in:

Foundations of Computer Science, 2007. FOCS '07. 48th Annual IEEE Symposium on

Date of Conference:

21-23 Oct. 2007