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We discuss models of user and group preferences in social networks and the Semantic web. We construct a model for user and group preference querying over RDF data as well as for ordering of answers by aggregation of particular attribute ranking. We have implemented our methods and heuristics into the Tokaf middleware framework prototype. We describe also experiments with Tokaf.
IPY helps to overcome national and other borders and constraints towards better information access and management of precious natural resources worldwide. It carries promises of a sustainable global village. Beyond the polar regions, IPY will leave a global legacy, most of it is digital and can be expressed as new data and synthesized information. IPY will affect how we do and fund science, how we...
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