Abstract
In recent years, the number of services and applications on the World Wide Web has increased exponentially. Consequently, a plethora of services providing similar functionalities are now available, which often poses a challenge for the users in terms of quality-based selection of their required services. Interaction with unknown services raises the issue of trust. Moreover, the service deliverables have to be negotiated and agreed upon, before any exchange can start. In this paper, we present a social network based trust framework (SNRNeg) that facilitates the negotiation of quality of service components. We extract recommendations from the social network (using the trust relationships between different nodes), and incorporate it into a decision model; which is used for negotiating the component Web service(s) of a composite system in an automated manner. Experiment results indicate the applicability and performance of SNRNeg in improving the negotiations for service composition process.
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