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In a peer-to-peer (P2P) network, where nodes can freely join and leave at any time, the number of participating nodes tends to vary over time. Furthermore, in an unstructured P2P network, where any node can freely select direct linkages with any other node or nodes, this free selection/linkage process determines the network topology. A recent study that examined unstructured real-world P2P networks...
Many unstructured peer-to-peer applications exhibit a characteristic of complex networks, such as power-law degree distribution. We are motivated by the fact that the high degree nodes are well connected each other and design a novel cluster-based search protocol to take advantage of cluster-based index replication. The search success rate is improved by one order of magnitude and the index storage...
The existing literature deals with the problems dealing with decentralized content-based P2P community formation and community-based search separately. Contrary to this approach, in this paper we propose a novel search algorithm that has both the capability to form the community structure as well as search it with maximum efficiency. The key contribution is to design a self-organized and adaptive...
This paper gives an impact analysis of Internet behavior??s activity on the network survivability. The power-law exists in the distribution of network behavior??s activity according to our empirical study. Besides, it is obvious that there is community effect in network communications. Our results overthrow some usual hypothesises as preconditions of trustworthy network study. It??s helpful to assess...
Apart from files, P2P Networks can be used for sharing non-replicable and reusable (e.g. computational) resources. This paper explains why existing discovery mechanisms have low performance searching for those resources in random power-law degree distributions. While high-degree nodes become more popular, their resources are consumed, resulting into a power-law network topology with no more useful...
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