The Influence of Sub-Communities on a Community-Based Peer-to-Peer System With Social Network Characteristics

The objective of this paper is to investigate the effect of sub-communities on Peer-to-Peer systems which have social network characteristics. The authors propose a general Peer-to-Peer model based-on social network to illustrate these effects. In this model the whole system is divided into several communities based on the contents of the peers and each one is divided into several sub-communities. A computer based model is created and social network parameters are calculated in order to show the effect of sub-communities. The result confirms that a large community with many highly connected nodes can be substituted with many sub-communities with normal nodes.