Safety in Multi-Agent Systems: Reputation Based on Dossier

A multi-agent architecture possesses versatility when solving complex problems in various research fields. In open systems, in which agents are unknown to each other a priori, their trust relationship is an essential subject. Hence, we present a reputation model based on dossier, which grants authenticity and reliability of exchanged information to its participants. This model has been applied to a classical problem in the railway sector, e.g., to define economical driving plans for freight trains. At least three agents are placed for each station, to plan, operate and manage plans. Planning and management skills are conducted by stationary agents, and the operating skills are conducted by mobile agents. Each locomotive has in its on-board computer a container for accommodating agents and transport mobile agents, either to complete an assignment or return to the station of origin. Empirical results show that sharing experiences improves the efficiency of the generation of plans, and that the use of the reputation based on dossier guarantees the veracity of the testimonies, therefore decreasing the need to centralize the information.