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Strategic Analysis of Trust Models for User-Centric Networks

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Author(s): Marta Kwiatkowska | David Parker | Aistis Simaitis

Journal: Electronic Proceedings in Theoretical Computer Science
ISSN 2075-2180

Volume: 112;
Issue: Proc. SR 2013;
Start page: 53;
Date: 2013;
Original page

ABSTRACT
We present a strategic analysis of a trust model that has recently been proposed for promoting cooperative behaviour in user-centric networks. The mechanism for cooperation is based on a combination of reputation and virtual currency schemes in which service providers reward paying customers and punish non-paying ones by adjusting their reputation, and hence the price they pay for services. We model and analyse this system using PRISM-games, a tool that performs automated verification and strategy synthesis for stochastic multi-player games using the probabilistic alternating-time temporal logic with rewards (rPATL). We construct optimal strategies for both service users and providers, which expose potential risks of the cooperation mechanism and which we use to devise improvements that counteract these risks.

Tango Jona
Tangokurs Rapperswil-Jona

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