Trust Model for Open Ubiquitous Agent Systems

Trust management model that we present is adapted for ubiquitous devices cooperation, rather than for classic client-supplier relationship. We use fuzzy numbers to represent trust, to capture both the trust value and its uncertainty. The model contains the trust representation part, decisionmaking part and a learning part. In our representation, we define the trusted agents as a type-2 fuzzy set. In a decisionmaking part, we use the methods from the fuzzy rule computation and fuzzy control domain to take trusting decision. For trust learning, we use a strictly iterative approach, well adapted to constrained environments. We verify our model in a multi-agent simulation where the agents in the community learn to identify defecting members and progressively refuse to cooperate with them. Our simulation contains significant background noise to validate model robustness.

• Type: Conference
• Year: 2005
• Where: IAT
• Authors: Martin Rehák, Lukás Foltýn, Michal Pechoucek, Petr Benda
• Keywords: IAT 2005, Intelligent Agent, Trust, Trust Management Model, Trust Representation Part