A Trust Management Model for QoS-Based Service Selection

Abstract

As the number of available services increases on the Web, it becomes greatly vital in service-oriented computing to discover a trustworthy service that best fits users’ requirements. Once a set of services fulfilling user’s functional requirements are founded, one of these services invoked by the users depends mostly on the Quality of Services (QoS), particularly security, trust, and reputation. This paper proposes a trust management model to support service discovery and selection based on trust and QoS. We propose a novel trustworthy service discovery and selection mechanism to make service consumers get trustworthy services possible. The mechanism uses consumers’ feedback to describe service’s and service provider’s trustworthy level. The service selection using the quantitative measurement rather than consumers’ intuitive selection allows selecting a high reliable service accomplishing their quality requirements well. Finally, we give experimental results by implementing the prototype for verifying the trust evaluation method.