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With the increase of the number of web services on the Internet, QoS driven service selection as an important way to satisfy user's constraint on quality and maintain the runtime performance of services, has received much attention. The existing QoS driven service selection approaches always assume that the estimated QoS data is effective and trustworthy, which is actually impossible in reality. This...
To meet the business and user requirements, it is crucial to manage the quality of service (QoS) of composite Web service. Due to the dynamics nature of the Web services, the runtime behavior of Web services is likely to differ from the initial estimated one. Therefore, a re-planning to adapt the composite service to the QoS violated services, ensuring the global constraints and preferences will be...
Nowadays, Web services are growing very fast and are usually aggregated into a composite one to satisfy customer's more and more complex requirements. Generally, there may be several different candidate services to carry out one task in a composite service, so a choice needs to be made for helping users select the most suitable one to satisfy their end-to-end constraints. This paper addresses this...
In order to realize a high-quality and good-performance service composition, based on current approach, we propose a new QoS-driven dynamic selection of composite Web services, which takes account of both the QoS properties and interface parameters matching degree. When doing the selection, we aware that the task is more or less a multistage decision-making process. Motivated by neural networks' high...
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