Abstract: How to discover the grid services that satisfy the needs of request from the large-scale grid service repository is an important application of semantic Web. Considering the traditional Web services discovery methods based on keywords matching unable to describe the grid services abilities and application fields accurately, this paper proposes a method of grid service discovery model based on ontology descriptions and ontology matchmaking. It builds a grid service discovering algorithm based on semantic similarity calculation with ontology matchmaking. The experimental results show that the method has a good recall and a query precision.

Key words: grid service discovery, semantic matching, domain ontology

摘要： 如何从大规模网格服务集合中快速而准确地发现满足用户请求的服务，是语义环境下网络应用的一个重要方面。针对传统的基于关键字匹配的Web服务发现方法无法准确描述网格服务服务能力和应用领域的问题，提出了一种基于输入和输出领域本体的语义网格服务描述模型和基于本体匹配的语义网格服务发现流程，构造了基于本体匹配语义相似度计算的语义网格服务发现算法。实验结果表明，基于本体匹配的语义网格发现方法能够获得很好的查全率和查准率。

关键词: 网格服务发现, 语义匹配, 领域本体