摘要： 结合P2P与Web服务语义描述技术，提出了一种基于分布式哈希表的非集中式Web服务发布与发现方法。通过定义服务供求双方共同遵守的领域本体，实现具有同样语义概念的两种不同描述的统一，提高服务发现的效率和准确度。利用类别本体对领域本体的组织，提出了层次式Web服务目录系统。基于该系统，服务的发布与发现是在特定应用领域范围内进行，因此减少了服务搜索空间，提高了服务发现的效率。

关键词: Web服务发布, Web服务发现, 语义描述, 分布式哈希表

Abstract: This paper presents an approach for decentralized Web services publication and discovery based on distributed Hash table by combining peer to peer (P2P) networks and semantic description of Web services. Unification of different description for concepts with the same semantics is achieved through the usage of domain ontology to normalize service provider and requestor, which increases the efficiency and accuracy of service discovery. By utilizing category ontology to organize domain specific ontology, it presents a kind of hierarchical Web service catalog system. Service publication and discovery is within specific domain, which reduces search space and improves efficiency of service discovery.

Key words: Web service publication, Web service discovery, Semantic description, Distributed Hash table