W3C home > Mailing lists > Public > www-webont-wg@w3.org > April 2003

Re: Case for Reinstatement of Qualified Cardinality Restrictions

From: Mike Dean <mdean@bbn.com>
Date: Wed, 23 Apr 2003 12:28:41 -0700
Message-Id: <200304231928.MAA04215@escher.SD.BBN.COM>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
cc: www-webont-wg@w3.org

> > Agreed.  I normally use multiple Restrictions with the same
> > value for onProperty.
> 
> If you are doing this in the RDF encoding you are going to be unpleasantly
> surprised.

Perhaps I should clarify with an example

  <owl:Class rdf:ID="Person">
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="#father"/>
        <owl:allValuesFrom rdf:resource="#Person"/>
      </owl:Restriction> 
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="#father"/>
        <owl:cardinality>1</owl:cardinality>
      </owl:Restriction> 
    </rdfs:subClassOf>
  </owl:Class>

Why is this a problem?

	Mike
Received on Wednesday, 23 April 2003 15:29:10 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:57:58 GMT