Abstract:

Existing P2P information sharing systems can only support semanticsfree sharing of large granularity and inefficiently utilize their own resources, limiting their largescale, higherlevel applications. To address these challenges, the resources were clustered to form topics and the peers which include relevant topics were linked to form semantic overlay network. According to the principle, a fourlayer based architecture was proposed, which is made up of resource layer, information service center layer, semantic overlay network layer and applicationlayer. The corresponding analysis shows that the P2P information sharing system based on semantic overlay network effectively optimizes network performance and is scalable.

Key words: semantic overlay network;topic domain;cluster;information sharing