摘要
服务质量表达了一个服务满足使用者需求的能力,在Web服务发现过程中起重要作用。针对现有服务发现系统对服务质量支持不足的缺点,在深入研究现有Web服务发现模型的基础上,对Augment UDDI注册系统框架做了针对QoS的扩展,提出一个支持QoS的语义Web服务发现模型SWSDM-QoS。在模型中,设计了一个分阶段匹配的语义Web服务发现策略,给出了每个阶段的具体匹配算法。并引入相似度函数对AugmentUDDI注册系统所采用的等级匹配算法进行了改进,弥补了匹配结果过于粗糙的缺点。最后设计了一组实验,对比分析了针对QoS扩展的可行性和有效性。
Quality of service expresses the capability that a web service meets the needs of users, which plays an important role in web services discovery. In view of the existing web services discoverysystem lacks sufficient support in QoS, based on studying the existing web services models, Augment UDDI system is expanded to support QoS, a QoS-based semantic web services discovery system model SWSDM-QoS is designed. SWSDM-QoS model applies the strategy of multi-stage matching to semantic web service discovery, gives the idiographic algorithm of matching in every stage. And system introduces the similarly function to improve the grades matching algo- rithm that Augment UDDI registration system adopts, makes up the disadvantage that the matching result is rough. Lastly, a set of experiments is designed to prove the expanded system which aimed at QoS is feasible and effective.
出处
《计算机工程与设计》
CSCD
北大核心
2009年第2期358-361,共4页
Computer Engineering and Design
