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在经典的语义覆盖网络中,所有节点都处于对等地位,没有考虑节点间共享资源数量及相对位置的差异,这使网络中节点分组信息的维护与资源搜索成本较高。文中分析了节点间共享资源数量及相对位置的差异对语义覆盖网络中节点分组信息的维护与资源搜索代价的影响,并在此基础上提出了一种新的基于非结构化P2P网络的语义覆盖网络。该结构利用P2P网络的拓扑匹配与区分索引技术有效减少了经典语义覆盖网络中节点分组信息的维护及资源搜索代价,提升了网络的整体性能。
In the classical semantic overlay network, all the nodes are in the same position without considering the differences in the number and relative position of the shared resources among the nodes, which makes the maintenance and resource searching of the node grouping information in the network costly. In this paper, we analyze the influence of the difference of the number and relative position of shared resources among nodes on the maintenance of node grouping information and the cost of resource search in semantic overlay network, and propose a new semantic coverage based on unstructured P2P network The internet. The structure uses the P2P network topology matching and distinguishing index technology to effectively reduce the maintenance and resource searching cost of node grouping information in the classical semantic overlay network and enhance the overall performance of the network.