Matrix analysis
Parallel and distributed computation: numerical methods
Parallel and distributed computation: numerical methods
A Bayesian framework for online reputation systems
AICT-ICIW '06 Proceedings of the Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services
A survey of trust and reputation systems for online service provision
Decision Support Systems
Digital trust games: an experimental study
GameSec'11 Proceedings of the Second international conference on Decision and Game Theory for Security
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Digital identity and trust management mechanisms play an important role on the Internet. They help users make decisions on trustworthiness of digital identities in online communities or e-commerce environments, which have significant security consequences. This work aims to contribute to construction of an analytical foundation for digital identity and trust by adopting a quantitative approach. A game theoretic model is developed to quantify community effects and other factors in trust decisions. The model captures factors such as peer pressure and personality traits. The existence and uniqueness of a Nash equilibrium solution is studied and shown for the trust game defined. In addition, synchronous and asynchronous update algorithms are shown to converge to the Nash equilibrium solution. A numerical analysis is provided for a number of scenarios that illustrate the interplay between user behavior and community effects.