论文信息 - An evaluation of a recursive weighing scheme for information retrieval in peer-to-peer networks

An evaluation of a recursive weighing scheme for information retrieval in peer-to-peer networks

A weighing scheme to rank ultra-peers, peers and documents is evaluated in this paper. The scheme is recursive because its components are instances of the same scheme accordingly to a hierarchy which models ultra-peers, peers and documents as informative resources. The experimental results bear evidence of the effectiveness of ultra-peer and peer ranking, i.e. visiting top-ranked ultra-peers and peers drives to relevant documents. The best results indicate that about two thirds of the relevant documents that can be retrieved by a centralized system can be obtained by exploring about one sixth of the network.

Massimo Melucci | Roberto Castiglion

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