OWL, how do I...

• From: Eric Jain <Eric.Jain@isb-sib.ch>
• Date: Fri, 6 Feb 2004 16:38:04 +0100
• To: "rdf-interest" <www-rdf-interest@w3.org>
• Message-ID: <00bf01c3ecc7$35e73de0$c300000a@caliente>

While writing a simple OWL ontology for describing some RDF data, I
stumbled over the following three issues:

1) How do I state that any 'Measurement' must be an integer and may have
one 'unit'?

  <foo> <rdf:type> <Foo>
  <foo> <length> <#_1>
  <#_1> <rdf:type> <Measurement>
  <#_1> <rdf:value> 42
  <#_1> <unit> <Meter>


2) How do I state that any statement with a 'length' property is
expected to have an author property?

  <rdf:Description rdf:about="urn:test:1">
    <length rdf:ID="#_1">42</length>
  </rdf:Description>

  <rdf:Description rdf:about="#_1">
    <author>Me</author>
  </rdf:Description>


3) What's the benefit of using owl:Thing instead of plain simple
rdf:Description for describing data?

Received on Friday, 6 February 2004 10:38:09 UTC