A Trust Model Under Grid Computing Environment

Abstract

AbstractIt is a challenging task to design a trust model that can effectively evaluate the relationships between different entities under Grid computing environment. In recent years, integrating trust into grid computing systems has been a hot research spot. In this paper a dynamic trust model is proposed based on direct trust and recommendation trust. Due to the dynamic nature of grid environment, the trust value that one entity holds about another entity is also dynamic in this model. If the entity performed well, then its trust value should be increased and if the entity performed bad, its trust value should be decreased. The trust value is computed either using direct trust value or using recommendation trust value according to the interaction history of the entities. Simulation experiments are provided to assess the model.