【摘要】 在对Web服务和Web服务合成的概念,以及OWL-S提供的Web服务上层本体和基于本体的Web服务合成描述进行介绍后,指出OWL-S对Web服务合成的描述能力有限,应针对Web服务合成进行基于本体的语义扩充。通过实例介绍如何在WSDL定义的概念基础上扩展得到基于本体的Web服务描述,在给出的Web服务定义的基础上讨论Web服务可合成性的定义,它是未来Web服务自动合成的前提和基础。更多还原

【Abstract】 This paper firstly introduces the concept of Web Services and Web Services composition.Based on the introduction of OWL-S’s upper Ontology and its description for Web Services composition,the paper indicates that the capability of OWL-S’s supporting for Web Service composition is limited,and the semantic expansion for composition based on Ontology is needed.By instance it introduces how to get the semantic expansion for WSDL,and based on the definition of Web Services,it discusses the definition of composability of Web Services,which is the basic for future automatic Web Services composition.更多还原