Abstract: Pervious service interface models don’t specify the internal behavior of partners, it is difficult for the system to accurately designate tasks. At the same time, it obstructs the implementation of services composition according to necessary and the reuse of business processing pattern. In order to overcome above problems and construct a bridge which efficiently interconnects service provider and service requester, the paper presents a new interface model of Semantic Services-Oriented Architecture(SSOA). The model uses Abstract State Machine(ASM) to abstractrly describe the behavior of the service with respect to an invocation instance of a service, and differentiates the abstraction and implementation of service interaction. It is beneficial for not only resolving the problems of communication and cooperation of both sides, but reusing interactive model. Undoubtedly, it will provide powerfully technological support for automatic discovery, composition according to necessary and intelligent reasoning of Web services.

Key words: semantic services-oriented architecture, abstract state machine, service interactive interface, service aggregative interface, mediation

摘要： 以往的服务接口模型没有规定业务伙伴任务的内部行为，这使业务处理难以准确地进行任务指派，也难以实现服务的按需组合以及业务处理模式的高度重用。为了克服上述问题并有效构建沟通服务提供者和需求者的桥梁，本文提出了面向语义服务结构的接口模型，该模型用抽象状态机抽象化描述和Web服务调用实例相关的服务行为，将服务交互的抽象和实现区分开，这既有效解决了服务双方的通讯和协作问题，便于交互模型的重用，而且为Web服务的自动发现、按需组合和智能推理提供了坚实的技术基础。

关键词: 面向语义服务的结构, 抽象状态机, 服务交互接口, 服务聚集接口, 调解