Evolutionary linkage creation between information sources in P2P networks

The present paper proposes a peer-to-peer (P2P) information retrieval and sharing system that evolutionarily creates linkages of information sources that are useful for both information publishers and information users, where information is managed in a decentralized manner. The proposed system relies on interactions among information publishers who actually generate information and have the greatest knowledge of the information, information users who use the information, and a network that creates useful linkages of information sources (information publishers). In order to enhance the value of their own information sources, information publishers propose new linkages of information sources that indicate information sources with which they would like to have their own information sources cooccur. The information users evaluate the linkages proposed by the information publishers. The network evolutionarily reconstructs the topological structures of the P2P network based on the fitness obtained from the users. Simulation results suggest that it is possible to find more information sources that users desire using the topological structures reconstructed by the proposed system, as compared to the use of non-reconstructed topological structures.