W3C home > Mailing lists > Public > public-esw-thes@w3.org > March 2004

Example from DCQ

From: Miles, AJ (Alistair) <A.J.Miles@rl.ac.uk>
Date: Fri, 12 Mar 2004 17:28:28 -0000
Message-ID: <350DC7048372D31197F200902773DF4C0494415C@exchange11.rl.ac.uk>
To: "Dan Brickley (E-mail)" <danbri@w3.org>
Cc: "'public-esw-thes@w3.org'" <public-esw-thes@w3.org>

What about this (from [1]):

<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
     xmlns:dc="http://purl.org/dc/elements/1.1/"
     xmlns:dcterms="http://purl.org/dc/terms/">
  <Description>
    <dc:subject>
      <Description>
         <value>19D10</value>
         <rdfs:label>Algebraic K-Theory of spaces</rdfs:label>
         <rdfs:isDefinedBy rdf:resource="URI2"/>
      </Description>
    </dc:subject>
  </Description>
</RDF>

This looks like the subject of the dc:subject statement is a blank node
(i.e. a thing) with a label etc.  Could this blank node not also be the
thing itself (i.e. this could be interpreted as having the same level of
indirection as foaf:topic statements have)? 

I.e. what's the difference between the above example, and this (from [2]):

<?xml version="1.0" encoding="UTF-8"?> 
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
        xmlns:foaf="http://xmlns.com/foaf/0.1/" 
        xmlns:fc="http://xmlns.com/foaf/corp#" 
        xmlns:dc="http://purl.org/dc/elements/1.1/" > 
 
<foaf:Document rdf:about="http://c2.com/cgi/wiki?McDonalds"> 
  <dc:title>McDonalds</dc:title> 
  <dc:description>McDonalds page on the C2 Wiki</dc:description> 
  <foaf:topic> 
    <fc:Company> 
      <fc:name>McDonalds</fc:name> 
      <foaf:homepage rdf:resource="http://www.mcdonalds.com/"/> 
    </fc:Company> 
  </foaf:topic> 
</foaf:Document> 

</rdf:RDF> 
 
???

Al.

[1] http://dublincore.org/documents/dcq-rdf-xml/
[2] http://rdfweb.org/topic/UsingFoafTopic
---
Alistair Miles
Research Associate
CCLRC - Rutherford Appleton Laboratory
Building R1 Room 1.60
Fermi Avenue
Chilton
Didcot
Oxfordshire OX11 0QX
United Kingdom
Email:        a.j.miles@rl.ac.uk
Tel: +44 (0)1235 445440
Received on Friday, 12 March 2004 12:29:02 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:38:51 GMT