面向Web服务发现的语义P2P覆盖网络

Mario Bisignano, G. Modica, O. Tomarchio
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引用次数: 1

摘要

在面向服务的环境中,采用基于关键字的集中式方法的服务发现机制不能为用户的请求提供准确的结果,也不再能够根据服务提供者提供的Web服务数量的增加进行扩展。用于服务发现的分布式、支持语义的基础设施有望满足这些需求,尽管动态选择和自动集成web服务的宏伟目标尚未实现。在本文中,我们提出了一个基于p2p的基础设施,支持可扩展的服务发现过程。覆盖组是通过将提供语义相关服务的对等节点聚在一起形成的:对服务(查询)的搜索请求将由最有可能得到满足的组处理。本文主要讨论了组的创建和维护策略,以及查询路由机制。系统原型已经实现,并通过案例研究验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Semantic P2P Overlay Network for Web Service Discovery
In service-oriented environments the service discovery mechanisms adopting a key-word based and centralised approach are not able to provide the users' requests with accurate results, nor are any longer able to scale against the increasing number of Web Services provided by service providers. Distributed, semantics-enabled infrastructures for service discovery promise to fulfill these requirements, even though the ambitious goal of a dynamic selection and automated integration of web services has not been accomplished yet. In this paper we present a P2P-based infrastructure supporting a scalable service discovery process. Overlay groups are formed by clustering together peers offering services which are semantically related: a search request for a service (query) will be handled by the group where it has the highest chance to be satisfied. The main focus of the paper is on the groups creation and maintenance strategy, and on the query routing mechanism. A system prototype has been implemented and validated through a case study.
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