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Subject: [Fwd: Re: Comment on "Meta to RDF" proposal]
Greetings! A suggestion from Tim Berners-Lee for the metadata SC. Hope everyone is having a great day! Patrick -- Patrick Durusau Patrick@Durusau.net Chair, V1 - Text Processing: Office and Publishing Systems Interface Co-Editor, ISO 13250, Topic Maps -- Reference Model Member, Text Encoding Initiative Board of Directors, 2003-2005 Topic Maps: Human, not artificial, intelligence at work!
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- From: Michael Brauer - Sun Germany - ham02 - Hamburg <Michael.Brauer@Sun.COM>
- To: Tim Berners-Lee <timbl@w3.org>, Patrick Durusau <patrick@durusau.net>
- Date: Wed, 05 Apr 2006 10:52:07 +0200
Patrick, I think the following comments from Tim Berners-Lee are of interest for the Metadata sub committee. Can you please pass them to the SC's mailing list (I'm currently only subscribed as an observer). Tim: Thank you very much for you interest in OpenDocument and the Meta data proposal. Patrick (Durusau) is the chair of the new Metadata Subcommittee that is starting its business these days, and therefore our TC's primary contact regarding meta data. Thanks Michael Tim Berners-Lee wrote On 03/30/06 17:55,: > Michael, > > Thank you for taking the time to present OpenDocument to us all. > > I have one technical comment on a document related to our discussions. > > In http://www.oasis-open.org/committees/download.php/15382/meta-to- > rdf-proposal.odt > > I think the user-defined metadata would be better mapped to a user- > defined term namespace and then a single triple > > <> user:value1 value3^^value2 . > > > > One would have to define some namespace for Opendocument user-defined > metadata tags. > > To make a bnode with "name" and "value" items hanging of it is I think > "gratuitous reification" -- saying descriptions of statements when > statements would do. > > > > Feel free to pass this comment on to the appropriate people or lists. > > Is it possible that the RDF mapping, rather than being limited to the > examples you give, could be made into a general algorithm? > > Tim > > > > > > User-Defined Metadata > > User-Defined metadata as specified in section 3.2. is mapped into the > following triples: > Pre-Defined Metadata > Subject > Predicate > Object > <meta:user-defined > meta:name="value1" > meta:value-type="value2"> > value3</meta:user-defined> > “” > meta:user-defined > _:ud > _:ud > meta:name > value1 > _:ud > meta:value > value3^^value2 > The triple (_:ud, meta:value, value3^^value2) contains a typed literal, > according to [RDF-PRIMER]. This means, that the data typed of the > literal value3 is set to value2. > > -- Michael Brauer Phone: +49 40 23646 500 Technical Architect Software Engineering Fax: +49 40 23646 550 StarOffice Development Sun Microsystems GmbH Sachsenfeld 4 D-20097 Hamburg, Germany e-mail: michael.brauer@sun.com--- End Message ---
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