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基于Chord和语义映射的Web服务发现*

作者:项泰,孙尚,孙启美 日期:2009-11-16/span> 浏览:3620 查看PDF文档

基于Chord和语义映射的Web服务发现*

项泰,孙尚,孙启美
(杭州电子科技大学 计算机应用技术研究所,浙江 杭州 310018)

摘要:为了克服集中式的语义Web服务发现的弊端,在分析现有P2P环境下的语义Web服务发现机制的基础上,提出了一种基于Chord和语义映射的服务发现机制,可以根据服务的输入/输出迅速、准确地定位到目标服务,并通过一种语义映射策略克服了Chord网络在对基于语义的模糊检索支持上的不足。此外,根据局部性原理在每一个注册中心上采用了类似于计算机操作系统中快表的策略。研究结果表明,该Web服务发现机制有效提高了服务发现效率。
关键词:语义Web服务;对等网;Web服务发现;语义映射
中图分类号:TP393.1文献标识码:A文章编号:1001-4551(2009)10-0010-05

Web service discovery based on Chord and semantic mapping
XIANG Tai, SUN Shang, SUN Qimei
(Institute of Computer Application Technology, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: Aiming at overcoming the disadvantages of centralized semantic Web service discovery, on the basis of analyzing existing semantic Web service discovery under P2P environment, a Web service discovery mechanism based on Chord and semantic mapping was presented, in which the target service could be accurately located by the inputs and outputs of Web service in a quick way and at the same time, a semantic mapping strategy was used to solve Chord networks problem which insufficient supported to fuzzy retrieval based semantic. In addition, according to the principle of locality, a strategy similar to the fast table in computer operating system was adopted by every register center. The results indicate that the Web service discovery mechanism improves the Web service discovery efficiency effectively.
Key words: semantic Web service; P2P; Web service discovery; semantic mapping
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