普适环境下的语义服务替换
Semantic Service Substitution in Pervasive Environments
摘要：
一切都是服务的计算基础设施提供了许多新的系统和应用可能性。然而，其中的主要挑战是在这样的异构环境中的应用程序执行的服务替代的问题。即使服务消失，应用程序也希望继续执行，或者希望尽可能使用具有更好QoS的更好服务，从而从环境中受益。在这篇文章中，我们定义了一个通用的服务模型，并描述服务之间的等价关系，考虑到他们提出的功能和他们的非功能QoS属性。我们定义了服务之间的语义等价关系和非功能QoS属性之间的等价度。利用这些关系，我们提出了语义替换机制的出现和消失的服务，适合应用程序的需求。我们开发了一个原型作为概念验证，并在实际用例中评估了其效率。
英文摘要：
A computing infrastructure where everything is a service offers many new system and application possibilities. Among the main challenges, however, is the issue of service substitution for the application execution in such heterogeneous environments. An application would like to continue to execute even when a service disappears, or it would like to benefit from the environment by using better services with better QoS when possible. In this article, we define a generic service model and describe the equivalence relations between services considering the functionalities they propose and their non functional QoS properties. We define semantic equivalence relations between services and equivalence degree between non functional QoS properties. Using these relations we propose semantic substitution mechanisms upon the appearance and disappearance of services that fits the application needs. We developed a prototype as a proof of concept and evaluated its efficiency over a real use case.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
