QoS-Aware Services Replacement of Web Service Composition
Information Technology and Computer Science, 2009. ITCS 2009. International Conference（2009）
摘要
The component service in Web service composition may fail or degrade in QoS thus needs to be replaced. In this paper, we propose a novel approach for services replacement of the composition. The target service could be replaced individually, or it could be replaced with its related services in the composition as a whole by a more complex service. In this way, far more choices will be available to repair the composition. We also present a mechanism to select the optimal service for replacement based on QoS in two phases: preliminary selection and ranking. Evaluation shows the effectiveness of our approach.
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关键词
qos-aware services replacement,web services,preliminary selection,quality of service,qos-aware service replacement technique,web service composition,preliminary ranking,services replacement,complex service,optimal service,component service,qos,related service,service replacement,target service,novel approach,reliability,linear programming,computer science,information technology,probability density function,service oriented architecture,data mining,degradation
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