Optimal Service Selection Using Trust Based Recommendation System for Service-Oriented Grid

Grid computing systems provide a virtual framework for sharing resources across organizational boundaries. Nowadays OGSA(Open Grid Services Architecture) is the most common adopted grid system architecture. This architecture adopts standardized service pattern, which means it views all resources as services and shares all resources through sharing services. With the increasing use of Grid system, service user is in a fix when having to make a choice from a set of services offering the same functionality. Hence service selection is one of the challenges to be addressed in Service Oriented Grid (SOG). In this paper we propose a recommendation system based on trust, reputation and QoS for the SOG. This novel approach uses computation of trustworthiness of services by the mechanism of similarity computation and ranking service providers based on feedback of users.