A Multi-Agent Prediction Market based on Partially Observable Stochastic Game

Details A Multi-Agent Prediction Market based on Partially Observable Stochastic Game A Multi-Agent Prediction Market based on Partially Observable Stochastic Game

2012-03-27

arxiv.org/abs/1203.6035v1

Computer Science

Multiagent Systems

20 pages, 8 figures, 2 tables

Scientific paper

We present a novel, game theoretic representation of a multi-agent prediction market using a partially observable stochastic game with information (POSGI). We then describe a correlated equilibrium (CE)-based solution strategy for this game which enables each agent to dynamically calculate the prices at which it should trade a security in the prediction market. We have extended our results to risk averse traders and shown that a Pareto optimal correlated equilibrium strategy can be used to incentively truthful revelations from risk averse agents. Simulation results comparing our CE strategy with five other strategies commonly used in similar markets, with both risk neutral and risk averse agents, show that the CE strategy improves price predictions and provides higher utilities to the agents as compared to other existing strategies.

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