Communications of the ACM
Social trust: a cognitive approach
Trust and deception in virtual societies
An evidential model of distributed reputation management
Proceedings of the first international joint conference on Autonomous agents and multiagent systems: part 1
Reputation and social network analysis in multi-agent systems
Proceedings of the first international joint conference on Autonomous agents and multiagent systems: part 1
Supporting Trust in Virtual Communities
HICSS '00 Proceedings of the 33rd Hawaii International Conference on System Sciences-Volume 6 - Volume 6
Model-Driven Trust Negotiation for Web Services
IEEE Internet Computing
A survey of trust in internet applications
IEEE Communications Surveys & Tutorials
Using testimonies to enforce the behavior of agents
COIN'07 Proceedings of the 2007 international conference on Coordination, organizations, institutions, and norms in agent systems III
Contributions to the emergence and consolidation of Agent-oriented Software Engineering
Journal of Systems and Software
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Reputation mechanisms are used to increase reliability and performance in virtual societies. Different decentralized reputation models have been proposed based on interactions among agents. Each system agent evaluates and stores the reputation of the agents with whom they have interacted and can give testimony to other agents about these reputations. The main disadvantages of these approaches when applied to open large-scale multi-agent systems are the difficulty of establishing strong links between the agents and the sometimes infeasible witness search process. In this paper we propose a hybrid reputation system with centralized and decentralized characteristics to overcome these problems. Reputations are provided by the system agents themselves but also by centralized subsystems that can be easily reached by any agent and can supply reliable reputations of any agent based on testimonies about undesired agent behaviour. Such behaviour is characterized by the violation of system norms.