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Re: [Proposal][SKOS-Core] Local (non-URI) identifiers for concepts

From: Charles McCathieNevile <charles@w3.org>
Date: Tue, 7 Sep 2004 04:22:13 -0400 (EDT)
To: Alistair Miles <a.j.miles@rl.ac.uk>
Cc: "'public-esw-thes@w3.org'" <public-esw-thes@w3.org>
Message-ID: <Pine.LNX.4.55.0409070416520.8595@homer.w3.org>

On Mon, 6 Sep 2004, Alistair Miles wrote:

>dc:identifier has recently occurred to me here also.
>
>What if we go ahead with the deprecation of skos:externalID, and replace with
>dc:identifier?  (And drop the proposal for a new property skos:localID).
>
>The problem of how to cope with concepts that may have more than one identifier
>(possibly deriving from different schemes) still remains, however.

I don't see the problem. There is no reason to restrict the cardinality
(number of dc:identifiers), so you could do as you suggested, or as I have
modified it below:

>What if we recommend here that a sub-property of dc:identifier is created by the
>scheme owners for each identifier?  So e.g.
(I've modified Al's example -CMN)
<skos:Concept rdf:about="http://example.org/topics/098">
	<ex:conceptNumber>098</ex:conceptNumber>
	<ex2:id>A.34.12</ex2:id>
	<dc:identifier rdf:parsetype="resource">
		<dc:scheme rdf:resource="http://purl.org/dc/elements/1.1/"/>
		<rdf:value xml:lang="en">Title</rdf:value>
	</dc:identifier>
	<dc:identifier xml:lang="fr" rdf:value="Nom du truc"/>
</skos:Concept>

(I should check the syntax, but the idea is the important thing :-)

>Where ex:conceptNumber and ex2:id are both hypothetical properties created by
>scheme owners, and both are declared to be subPropertyOf dc:identifier by scheme
>owners.  (Scheme owners can also declare these props as inversefunctional if
>they choose).

>Comments?

Made sense to me...

Chaals
Received on Tuesday, 7 September 2004 08:22:20 GMT

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