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2002-04-21-tapTapVisualize Context (requires Java Plug-in)
CREATED BY chris • LAST EDITED BY chris 5714 days AGO
R.V.Guha & Rob McCool: "A System for integrating Web Services into a Global Knowledge Base" — "TAP currently uses directed labeled graphs (i.e., RDF without containers or reification) as its data model (in the remainder of this paper, when we say "RDF", we mean RDF without containers or reification). Each site exposes its data as a directed labeled graph. The graph provided by a single site is referred to as its local graph and the knowledge base that emerges from the aggregation of these local graphs is referred to as the global graph. Graph super-positioning aggregates the global graph from the local graphs. The tricky part in this process is the proper alignment of nodes and arcs from different servers. Nodes that correspond to the same object, from different servers, need to be to unified/merged in the aggregation process."

www.alpiri.org/sw002.html

Concepts: [create Global Knowledge Base], [create Graph Superpositioning], [create Graph Merging], [create Incremental Global Graph Exploration], [create Object Identity Inference], [create Object Identity Resolution], Reference by Description or [create Reference by Semantic Templates] (Semantic Compressions) as opposed to [create Reference by Name]

Reference by Description

"Getting everyone to agree on a set of names/URIs/URNs for every object they might want to exchange data about is not realistic. [...] The core assumption is that by using a relatively small core vocabulary and standard system for description, servers and clients can bootstrap to a mutually comprehensible scheme for referring to a very large (compared to the size of the core vocabulary) set of objects."


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