To check the redundant services of Intemet of Things (IoT) and save resources, a novel similarity calculation model based on service event class diagram was proposed to cheek redundancy by means of relations between events and services.It analyzed the context of IoT and service type and obtained the services similarity measurement based on events according to this model.By this similarity calculation method, a static service redundancy detection algorithm was proposed to remove duplication function invocation of services, which saved system resources occupied by services and decreased the consumption of resources in the IoT.%为了检测物联网中冗余服务,节省资源,使用事件和服务关系提出了基于事件服务类图的冗余服务相似性计算模型,在此模型基础上分析了物联网事件上下文及其服务类型,从而得出了面向事件的服务相似度计算方法.由此方法得到了一个静态的服务冗余检测算法.此算法通过检测相似性事件来去除重复的服务函数调用,节约系统服务对资源的占用,从而解决物联网中资源高耗问题.
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