Databases, Information Systems, and Peer-to-Peer Computing

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Finally, nodes are interconnected via a regular topology, where nodes that are close in the identifier space are highly interconnected. DHT topology is regulated: all nodes have the same connectivity (same number of neighbors), and selection of the neighbors is strictly dictated by the semantics of the DHT interconnections. Although DHTs (as the most important realization of the fabricated organization approach) are very successful in creating efficient topologies, we argue that as a model DHT fails to respect natural characteristics/requirements of QDNs.

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De/edutella/. In the following subsections we show the model details. Since there is no ideal model describing arbitrary information sources, our model should be viewed as a core of relevant attributes; it may be completed by attributes from other models, as with any other RDFS based schema. Other systems do also use peer models to improve the peer-to-peer network characteristics. [14] uses a metric model for improving search in peer-to-peer networks, including annotations such as average aggregate bandwidth, average aggregate processing cost, number of results, satisfaction of the query and time to satisfaction.

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