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2003-03-24
2004-04-14
  • Nobody/Anonymous

    Welcome to Open Discussion

     
    • Jos De Roo

      Jos De Roo - 2004-04-14

      [From: Seth Ladd <seth@picklematrix.net>]

      Hello,

      Forgive me if this isn't the right place to ask Euler questions, but I
      haven't been able to find a mailing list or contact for Euler.  If there
      is a better place, please let me know.

      I am trying to write some tests using owl:hasValue and run it through
      Euler.  Unfornately, I'm not having much luck.  I am trying say "any
      object that has a property "dc:subject" and a value of "foo" is an
      instance of a :Foo class".  I do it with:

      :Foo a owl:Class ;
           rdfs:subClassOf [ a owl:Restriction ;
                             owl:onProperty dc:subject ;
                             owl:hasValue^^xsd:string "foo" ] .

      I then give it the facts:

      :foo a owl:Thing ; dc:subject^^xsd:string "foo" .
      dc:subject a owl:DatatypeProperty ; rdfs:range xsd:string .

      Then I ask:

      _:X a :Foo .

      But I don't get any proofs.  Of course, I could be asking the question
      incorrectly.  Before I go down that route, I want to see if anyone knows
      if Euler can handle the above owl:hasValue usage.

      Thanks for your tips or ideas!
      Seth

       

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