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On Distributed Service Selection for QoS Driven Service Composition

机译:QoS驱动的服务组合的分布式服务选择

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The service oriented paradigm promises dynamic service discovery and on-the-fly service composition to fulfill user requirements. For the dynamic and heterogeneous nature of service and network, ensuring end-to-end QoS (Quality of Service) becomes a challenge in service composition. This paper proposes a distributed QoS registry architecture, in which QoS registries could maintain services cooperatively and exchange information. Then we present a model combining network QoS and service QoS together to show their impact on end-to-end QoS. Based on the distributed QoS registry and combined QoS model, we present a distributed service selection algorithm to find optimal service composition plan. Experimental results show that the algorithm achieves excellent selection result with outstanding performance in our architecture.
机译:面向服务的范例承诺动态服务发现和即时服务组合,以满足用户需求。对于服务和网络的动态和异构性质,确保端到端QoS(服务质量)成为服务组合中的挑战。本文提出了一种分布式QoS注册表体系结构,其中QoS注册表可以协同维护服务并交换信息。然后,我们提出了一个将网络QoS和服务QoS结合在一起的模型,以显示它们对端到端QoS的影响。基于分布式QoS注册表和组合QoS模型,我们提出了一种分布式服务选择算法,以找到最佳的服务组合计划。实验结果表明,该算法在我们的体系结构中取得了很好的选择结果,并且性能优异。

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