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Semantic Service Composition With QoS End -To- End Constraints Via AND/OR Graphs

In this paper, the authors present AND/OR graphs as a unifying framework for semantic service composition that considers users QoS constraints. The main virtues of this representation among others are its ability to express semantic inference and to deal with QoS constraints from different perspectives. In addition, it correctly handles multiple inputs/outputs of services, and allows high degree of automation. Once service dependencies and QoS features are formalized as AND/OR graph, they apply a search algorithm to discover composite services that considers user QoS end-to-end preferences.

Provided by: International Journal of Computer Science Issues Topic: Software Date Added: Mar 2012 Format: PDF

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