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Re: ISSUE-2 (olyerickson): dct:language should be added to DCAT [Best Practices for Publishing Linked Data]

From: Richard Cyganiak <richard@cyganiak.de>
Date: Thu, 8 Dec 2011 16:32:57 +0000
Cc: "Government Linked Data Working Group WG" <public-gld-wg@w3.org>
Message-Id: <C18A2484-9DEE-4CD8-BB1B-CE1F006FDA60@cyganiak.de>
To: "Maali, Fadi" <fadi.maali@deri.org>
On 8 Dec 2011, at 14:01, Maali, Fadi wrote:
> Currently, I suggest using language codes as literals similar to what RDF uses for tagging plain literals (http://www.ietf.org/rfc/rfc3066.txt)

Note that RFC 3066 is obsolete and is being superseded by RFC 4646 (a.k.a. BCP 47):

   http://www.ietf.org/rfc/rfc4646.txt

RDF 1.1 will reference that spec for the normative definition of language tags.

Conveniently, the definition of dcterms:language also says:

[[
Recommended best practice is to use a controlled vocabulary such as RFC 4646 [RFC4646].
]]
http://dublincore.org/documents/dcmi-terms/#terms-language

On the other hand, the range of dcterms:language is defined as dcterms:LinguisticSystem, which seems to contradict the quoted statement above, and seems to discourage the use of a simple string as a value of this property.

I note that the old dc: namespace (/elements/1.1/) doesn't contain that range declaration.

There are already datasets that define URIs for languages, like http://www.lingvoj.org/lingvo/en-us so recommending the use of a URI would be another option. (In the case of Lingvoj, these URIs are again based on RFC 4646.)

Best,
Richard



> 
> Details at:  http://www.w3.org/2011/gld/track/issues/2 
> 
> Regards,
> Fadi Maali
> 
>> -----Original Message-----
>> From: Government Linked Data Working Group Issue Tracker
>> [mailto:sysbot+tracker@w3.org]
>> Sent: 23 November 2011 02:14
>> To: public-gld-wg@w3.org
>> Subject: ISSUE-2 (olyerickson): dct:language should be added to DCAT
>> [Best Practices for Publishing Linked Data]
>> 
>> 
>> ISSUE-2 (olyerickson): dct:language should be added to DCAT  [Best
>> Practices for Publishing Linked Data]
>> 
>> http://www.w3.org/2011/gld/track/issues/2
>> 
>> Raised by: John Erickson
>> On product: Best Practices for Publishing Linked Data
>> 
>> (Added as an issue at the suggestion of @cygri)
>> 
>> dct:language should be added to DCAT <http://t.co/loHgJejt>
>> 
>> Discussion: We (TWC RPI) are refining our IOGDS <http://t.co/7HPOldN>
>> and will be adding dct:language the Catalog level, first for statistics
>> purposes and then as a browsable facet. dct:language is in our metadata
>> model, as a conversion "enhancement" that is added after scraping and
>> first-pass RDF conversion. The person doing that work has noted the
>> predominant languages (approx 16 across 116 catalogs from over 36
>> countries and international organizations) but we don't have it "in the
>> graph" (yet)...
>> 
>> 
> 
Received on Thursday, 8 December 2011 16:33:37 UTC

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