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。
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.