Abstract: With Web services’ rapid increase in the Internet，it is already an important and key problem how customer discovers the needed Web services.In view of sparse data in the specification of Web services on the UDDI（Universal Description Discovery and Integration） registration center，traditional keywords-based Web services match mechanism UDDI lacks semantic information and has low searching efficiency.In order to improve Web services match’s precision and recall on the UDDI registration center that is based on WSDL（Web Services Description Language） at present and on semantic ontology in the future，this paper proposes a new ontology similarity match that makes Web services match improved in the aspects of precision and recall.

Key words: Web service, Universal Description Discovery and Integration（UDDI）, ontology, ontology similarity

摘要： 随着Internet上Web服务的快速增长，客户如何发现想要的Web服务，已经是Web服务技术中的难点和关键问题。鉴于UDDI注册中心的Web服务描述信息非常稀疏的特点，传统的基于关键字的服务匹配机制UDDI缺乏语义支持，搜索效率低；为了在UDDI注册中心提供的用WSDL描述的和未来用语义本体描述的Web服务信息的基础上提高Web服务匹配的查准率和查全率，提出了一种新的本体相似匹配方法，使Web服务匹配在查准率和查全率方面都有所提高。

关键词: Web服务, 统一描述、发现和集成协议（UDDI）, 本体, 本体相似度