- From: Jodi Schneider <jodi.schneider@deri.org>
- Date: Mon, 9 Aug 2010 12:19:50 +0100
- To: William Waites <ww-keyword-okfn.193365@styx.org>, William Waites <william.waites@okfn.org>
- Cc: "Young,Jeff (OR)" <jyoung@OCLC.ORG>, Karen Coyle <kcoyle@kcoyle.net>, public-xg-lld@w3.org, Richard Cyganiak <richard.cyganiak@deri.org>
On 9 Aug 2010, at 12:15, William Waites wrote:
> On 10-08-09 11:39, Jodi Schneider wrote:
>> Maybe your concern is that authority control should give us
>> identifiers not just uniform headings? I guess Karen's more recent
>> post might be relevant to this thread:
>> http://kcoyle.blogspot.com/2009/08/frsad.html
>
> This is the sort of think I don't think we need to wait for
> Authorities to "give" us. Where we have uniform headings
> strings we can just define a hash function to give us
> stable identifiers, e.g. sha1("World War, 1939-1945").
What happens when the LCSH heading changes?
A related question: Is there a taxonomy of the *kinds* of changes LCSH has? Or a general taxonomy for changes to 'identifiers'?
-Jodi
PS-I agree with you -- but the larger problem is social, not technological. Can we explain why machines are a good audience for authority controlled headings, so that humans benefit down the line?
>
> Nothing stopping us from putting them in a namespace,
> e.g. http://purl.org/net/lcsh#<sha1> that returns,
>
> @prefix lcsh <http://purl.org/net/lcsh#>.
>
> lcsh:672369b2e70511c1455c53e00fecac622f4fc21b
> dcam:member dc:LCSH ;
> rdf:value "World War, 1939-1945" .
>
> It would be trivial to generate some inference rules as well,
>
> { ?x dcam:member dc:LCSH .
> ?x rdf:value "World War, 1939-1945 } =>
> { ?x owl:sameAs lcsh:672369b2e70511c1455c53e00fecac622f4fc21b }.
>
> That could be used for normalising "old style" dc references
> where the dc:subject is a bnode.
>
> The point is, we can do this now and don't need to wait on the
> Library of Congress to do it. If they eventually do mint identifiers,
> we can just put another owl:sameAs in.
>
> Just my £0.02
>
> Cheers,
> -w
>
> --
> William Waites <william.waites@okfn.org>
> Mob: +44 789 798 9965 Open Knowledge Foundation
> Fax: +44 131 464 4948 Edinburgh, UK
>
> RDF Indexing, Clustering and Inferencing in Python
> http://ordf.org/
Received on Monday, 9 August 2010 11:20:25 UTC