Fw: OWL, how do I... from Eric Jain on 2004-02-09 (www-rdf-logic@w3.org from February 2004)

From: Eric Jain <Eric.Jain@isb-sib.ch>
Date: Mon, 9 Feb 2004 11:03:04 +0100
To: "rdf-logic" <www-rdf-logic@w3.org>
Message-ID: <007c01c3eef3$e8bf7170$c300000a@caliente>

[Repost from rdf-interest, perhaps this list is more appropriate.]

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 Monday, 9 February 2004 05:03:21 UTC