Thursday, March 18, 2010

Paper Summary - Performing Object Consolidation on the Semantic Web Data Graph

Hogan, A.; Harth, A.; and Decker, S. 2007. Performing object
consolidation on the semantic web data graph. In In Proceedings
of I3: Identity, Identifiers, Identification. Workshop at 16th
International World Wide Web Conference (WWW2007).

This paper describes identities and the integration of data. They present a method for merging instances across multiple data sources (**large scale**). They describe how they determine two instances represent the same entity using inverse functional properties. Their dataset includes over 72 million instances (wow).

Key points:

  • There isn't much agreement on use of common URIs to identify entities (optional in RDF) so URI represents multiple instances at times
  • There is a lack of formal specification for determining equivalences among entities
  • Existing methods that perform object consolidation rely upon probabilistic methods
  • The use of inverse functional properties in the Semantic Web world is widely used





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