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conference paper

Social Learning with Disparate Hypotheses

Ntemos, Konstantinos  
•
Bordignon, Virginia  
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Vlaski, Stefan  
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January 1, 2022
2022 30Th European Signal Processing Conference (Eusipco 2022)
30th European Signal Processing Conference (EUSIPCO)

In this paper we study the problem of social learning under multiple true hypotheses and self-interested agents. In this setup, each agent receives data that might be generated from a different hypothesis (or state) than the data other agents receive. In contrast to the related literature on social learning, which focuses on showing that the network achieves consensus, here we study the case where every agent is self-interested and wants to find the hypothesis that generates its own observations. To this end, we propose a scheme with adaptive combination weights and study the consistency of the agents' learning process. We analyze the asymptotic behavior of agents' beliefs under the proposed social learning algorithm and provide sufficient conditions that enable all agents to correctly identify their true hypotheses. The theoretical analysis is corroborated by numerical simulations.

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