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Re: Comment on "Meta to RDF" proposal

From: Dan Connolly <connolly@w3.org>
Date: Thu, 30 Mar 2006 10:42:00 -0600
To: Tim Berners-Lee <timbl@w3.org>
Cc: Michael Brauer <michael.brauer@sun.com>, www-archive@w3.org
Message-Id: <1143736920.14764.136.camel@dirk.w3.org>

tim copied public-archive@w3.org ; I'm pretty sure
he meant to copy www-archive@w3.org , which is
archived at http://lists.w3.org/Archives/Public/www-archive/

On Thu, 2006-03-30 at 10:55 -0500, Tim Berners-Lee wrote:
> 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>
> ดก
> 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.
-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Thursday, 30 March 2006 16:42:07 GMT

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