With the in-depth study and application in Web services and in the need of a variety of service automation tasks, semantic Web service has become the research focus of the academia.At present, it is known most of the studies are on the reasoning based on semantics serving the single operation-level, and scarcely covers inter-operation semantic relationships.This paper presents a rewrite model of Web services.The model adds rewriting rules of semantics between the operations for Web service, through this a Web service is modelled as the service rewrite system.By using inference mechanism of rewrite technique, we can make analysis and mining on Web services.Our nethod can be applied to the optimisation of QoS of services, composition and fusion of services, and so on.%随着对Web服务的不断深入研究和应用,出于各种服务自动化任务的需要,语义Web服务逐渐成为学术界的研究热点.可以看出这些研究大都基于服务单个操作级别的语义进行推理,而对于多个操作之间的语义联系却很少涉及.提出Web服务的重写模型,通过为Web服务添加操作之间的重写规则语义,将Web服务建模为服务重写系统,利用重写技术中的推理机制,实现对Web服务的分析和挖掘.这个方法可应用于服务的QoS优化,以及服务的组合与融合等方面.
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