一种基于分层P2P结构的教育资源网格检索模型

基于教育资源网格,讨论了网格的组织结构问题。针对教育资源网格基于层次扩充树结构,提出了一种基于分层P2P结构的教育资源网格分布式检索模型(DRM-HP2P),该模型使用Web Services技术为资源节点的本地检索进行了封装,使用P2P方式进行域内检索,并通过该域内的管理节点向其它管理域转发检索请求,启动多个域内检索,最后将检索结果合并后返回。应用表明,该模型有较高的效率。

A retrieval model of an educational resource grid based-on hierarchical P2P

Based on the educational resource grid,the organizational structure of the grid was discussed.In view of the hierarchical expansion tree structure of the educational resource grid,a distributed retrieval model of an educational resource grid was proposed based-on hierarchical P2P(DRM-HP2P),which can use Web Services technology to encapsulate the local resource retrieval of resource nodes, use the P2P way to carry on the intra-domain retrieval,forward retrieval requests to other domains through management node of this domain,then start several intra-domain retrieval,and finally return the merged results.An application shows that this model has a high efficiency.