Automatic Web Service Composition Based on Uncertainty Execution Effects - 2015
By arranging multiple existing Web services into workflows to make price-added services, automatic Net service composition has received much attention in Service-Oriented Computing. A massive range of ways are proposed for it although most of them are simply based on the matching of input-output parameters of services. Besides these parameters, some other parts can affect the execution of services and their composition, like the preconditions and service execution results. In explicit, the execution effects of some services are usually uncertain because of the advanced and dynamically changing application environments in the $64000 world, and this may cause the emergence of nondeterministic selections within the workflows of composite services. However, the previous strategies for automatic service composition mainly rely on sequential structures, that build them difficult to require into account uncertain effects throughout service composition. In this paper, Graphplan is used and extended to tackle this problem. In order to model services with unsure effects, we have a tendency to initial extend the initial type of Graphplan. Then, we have a tendency to propose a completely unique approach that may introduce branch structures into composite solutions to address such uncertainty in the service composition process. Extensive experiments are performed to guage and analyze the proposed methodology.
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