Hash URIs (and multiple-language URIs)
MESSAGE FROM TOM BAKER
-----Original Message-----
From: Thomas Baker [mailto:[email protected]] On Behalf Of Thomas Baker
Sent: 24 April 2010 00:41
To: FAO-Agris-Caris
Subject: Hash URIs (and multiple-language URIs)
Dear all,
I am attaching a very interesting post from Ed Summers
summarizing feedback to the "#concept" approach to URI construction taken at Library of Congress.
Note that OCLC has minted language-specific URIs for Dewey, which would theoretically be an option for AGROVOC but which Ed -- quite reasonably in my opinion -- would rather avoid. (For one thing, we'd end up with more triples than we started with before cutting hasTranslation...).
Tom
On Fri, Apr 23, 2010 at 04:09:39PM -0400, Ed Summers wrote:
> Sender: [email protected]
> Date: Fri, 23 Apr 2010 16:09:39 -0400
> Subject: Re: [pedantic-web] Simple Conneg scheme for RDFa sites
> From: Ed Summers <[email protected]>
> To: [email protected]
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Tom,
>
> When I was initially developing id.loc.gov at lcsh.info Dan Brickley
> raised some concern about the use of hash fragment URIs in conjunction
> with RDFa [1]. David Booth's response at the time [2] gave me some
> comfort, and made me make a mental note not to not include an 'id'
> attribute in an rdfa xhtml document that was the same as the fragment
> portion of a non-information resource URI.
>
> Other than that thread I haven't received any feedback indicating we
> were doing anything wrong using URIs like:
>
> http://id.loc.gov/authorities/sh95000541#concept
>
> to identify non-information resources aka "things" [3]. As you pointed
> out the rationale for using the hash fragment can be found in the Cool
> URIs for the Semantic Web document [4].
>
> On the subject of multiple language representations and SKOS I would
> personally try to avoid minting language specific URIs for the SKOS
> concepts themselves. An example of doing this can be found in
> dewey.info [5]
>
> --
> <http://dewey.info/class/641/2009/08/about.en>
> a skos:Concept ;
> skos:prefLabel "Food & drink"@en ;
> cc:attributionName "OCLC Online Computer Library Center, Inc." ;
> cc:attributionURL <http://www.oclc.org/dewey/> ;
> cc:morePermissions <http://www.oclc.org/dewey/about/licensing/> ;
> dct:isVersionOf <http://dewey.info/class/641/> ;
> dct:language "en"^^dct:RFC4646 ;
> xhv:license <http://creativecommons.org/licenses/by-nc-nd/3.0/> ;
> skos:broader <http://dewey.info/class/64/2009/08/about.en> ;
> skos:inScheme <http://dewey.info/scheme/2009/08/about.en> ;
> skos:notation "641"^^<http://dewey.info/schema-terms/Notation> .
>
> <http://dewey.info/class/641/2009/08/about.fr>
> a skos:Concept ;
> skos:prefLabel "Nourriture et boisson"@fr ;
> cc:attributionName "OCLC Online Computer Library Center, Inc." ;
> cc:attributionURL <http://www.oclc.org/dewey/> ;
> cc:morePermissions <http://www.oclc.org/dewey/about/licensing/> ;
> dct:isVersionOf <http://dewey.info/class/641/> ;
> dct:language "fr"^^dct:RFC4646 ;
> xhv:license <http://creativecommons.org/licenses/by-nc-nd/3.0/> ;
> skos:broader <http://dewey.info/class/64/2009/08/about.fr> ;
> skos:inScheme <http://dewey.info/scheme/2009/08/about.fr> ;
> skos:notation "641"^^<http://dewey.info/schema-terms/Notation> .
> --
>
> Personally I would've preferred to see the i18n features in SKOS [6]
> used, and there being a single, language neutral URI for concepts:
>
> --
> <http://dewey.info/class/641/2009/08/about>
> a skos:Concept ;
> skos:prefLabel "Food & drink"@en ;
> skos:prefLabel "Nourriture et boisson"@fr .
> cc:attributionName "OCLC Online Computer Library Center, Inc." ;
> cc:attributionURL <http://www.oclc.org/dewey/> ;
> cc:morePermissions <http://www.oclc.org/dewey/about/licensing/> ;
> dct:isVersionOf <http://dewey.info/class/641/> ;
> dct:language "en"^^dct:RFC4646 ;
> xhv:license <http://creativecommons.org/licenses/by-nc-nd/3.0/> ;
> skos:broader <http://dewey.info/class/64/2009/08/about> ;
> skos:inScheme <http://dewey.info/scheme/2009/08/about> ;
> skos:notation "641"^^<http://dewey.info/schema-terms/Notation> .
>
> --
>
> //Ed
>
> [1] http://markmail.org/message/nazjzbygg5ys6s3j
> [2] http://markmail.org/message/si7sd4vjlbwickzr
> [3] http://www.w3.org/DesignIssues/LinkedData.html
> [4] http://www.w3.org/TR/2007/WD-cooluris-20071217/#hashuri
> [5] http://dewey.info/class/641/about.rdf
> [6] http://www.w3.org/TR/skos-reference/#L1567
>
>
> --
> Subscription settings: http://groups.google.com/group/pedantic-web/subscribe?hl=en
--
Tom Baker <[email protected]>
