- 期刊
Reliability Prediction and QoS Selection for Web Service Composition
摘要
The key issues in the development of Web service composition are the dynamic and efficient reliability prediction and the selecting component services appropriately. In this paper, we discuss Web service composition in two ways: reliability prediction and QoS optimal selection. Firstly, we propose a reliability prediction model based on Petri net. To address the complex connecting relationship among subservices, places of basic Petri net for Input and Output are extended to some subtypes for multi-source input place and multiuse output place. Secondly, we use a new skyline algorithm based on a R-tree index. The index tree is traversed to judge whether it is dominated by the candidate Skyline sets. Experimental evaluation on real and synthetic data shows the effectiveness and efficiency of the proposed approach.
延伸閱讀
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