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Methods and systems for representing, using and displaying time-varying information on the semantic web

  • US 8,595,222 B2
  • Filed: 09/29/2008
  • Issued: 11/26/2013
  • Est. Priority Date: 04/28/2003
  • Status: Active Grant
First Claim
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1. A computer-implemented method of using Resource Description Framework (RDF) reification to associate Semantic Web statements with start properties and stop properties related to lifetimes of the Semantic Web statements using a reification processor, comprising:

  • accessing an RDF statement from a Semantic Web resource wherein the RDF statement includes a subject, a predicate, and an object;

    determining a lifetime of the subject of the RDF statement, wherein determining the lifetime of the subject is based on at least one of a start property of the subject and a stop property of the subject;

    determining a lifetime of the predicate of the RDF statement, wherein determining the lifetime of the predicate is based on at least one of a start property of the predicate and a stop property the predicate;

    determining a lifetime of the object of the RDF statement, wherein determining the lifetime of the object is based on at least one of a start property of the object and a stop property of the object;

    automatically determining a lifetime of the RDF statement based on an overlap of the lifetime of the subject, the lifetime of the predicate, and the lifetime of the object;

    generating a reified RDF statement, using the reification processor, wherein the reified RDF statement includes the subject, the predicate, the object and the lifetime of the RDF statement; and

    storing the reified RDF statement in the Semantic Web resource.

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