基于OWL-S的服务发现算法研究

Web服务的大量涌现对服务发现提出了挑战，UDDI上基于关键字和简单分类的服务发现机制已经不能很好地满足需要。本文在分析现有相关研究的基础上提出了基于OWL-S的We b服务发现改进方法，通过引入OWL-S的过程模型实现了对服务中原子服务和子服务的匹配，提高了查准率；提出了构建依赖关系网的算法，通过对图中结点标注颜色的方法实实现了对满足用户需求的服务过程的发现。算法不仅返回满足用户需要的匹配结果，还可以在匹配不成功时给用户建议得到全部要求的额外输入。

Matchmaking of Web Services Based on the OWL-S Services Model

The current infrastructure of Web services discovery such as UDDI provides text-and taxonomy-based search capabilities.With the rapid growth of the number of Web services, the current Web service discovery mechanism becomes inefficient. The service discovery algorithm uses OWL-S ontology, and explicitly returns the sequence of atomic process invocations that the client must perform in order to achieve the desired result. When no full match is possible, the algorithm features a flexible matching by returning partial matches and by suggesting additional inputs that will lead to a full match.