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Content Provider | ACM Digital Library |
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Author | Vickrey, David Koller, Daphne |
Abstract | Consider the problem of a group of agents trying to find a stable strategy profile for a joint interaction. A standard approach is to describe the situation as a single multiplayer game and find an equilibrium strategy profile of that game. However, most algorithms for finding equilibria are computationally expensive; they are also centralized, requiring that all relevant payoff information be available to a single agent (or computer) who must determine the entire equilibrium profile. In this paper, we exploit two ideas to address these problems. We consider structured game representations, where the interaction between the agents is sparse, an assumption that holds in many real-world situations. We also consider the slightly relaxed task of finding an approximate equilibrium. We present two algorithms for finding approximate equilibria in these games, one based on a hill-climbing approach and one on constraint satisfaction. We show that these algorithms exploit the game structure to achieve faster computation. They are also inherently local, requiring only limited communication between directly interacting agents. They can thus be scaled to games involving large numbers of agents, provided the interaction between the agents is not too dense. |
Starting Page | 345 |
Ending Page | 351 |
Page Count | 7 |
ISBN | 0262511290 |
Language | English |
Publisher | Association for Computing Machinery (ACM) |
Publisher Date | 2002-07-28 |
Access Restriction | Subscribed |
Content Type | Text |
Resource Type | Article |
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