- From: Thomas Baker <tom@tombaker.org>
- Date: Fri, 11 May 2012 14:07:03 -0400
- To: Gregg Kellogg <gregg@greggkellogg.net>
- Cc: Danny Ayers <danny.ayers@gmail.com>, Dan Brickley <danbri@danbri.org>, public-rdfa <public-rdfa@w3.org>, "hugh@hubns.com" <hugh@hubns.com>
On Fri, May 11, 2012 at 01:31:00PM -0400, Gregg Kellogg wrote:
> There are some minor issues remaining that I'm looking at right now:
>
> It looks like rdfs:command and dc:description are reduced in the RDF/XML output. For example, dc:Agent:
>
> <rdf:Description rdf:about="http://purl.org/dc/terms/Agent">
> <rdfs:label xml:lang="en-US">Agent</rdfs:label>
> <rdfs:comment xml:lang="en-US">A resource that acts or has the power to act.</rdfs:comment>
> <dcterms:description xml:lang="en-US">Examples of Agent include person, organization, and software agent.</dcterms:description>
> <rdfs:isDefinedBy rdf:resource="http://purl.org/dc/terms/"/>
> <dcterms:issued>2008-01-14</dcterms:issued>
> <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
> <rdf:type rdf:resource="http://purl.org/dc/terms/AgentClass"/>
> <dcterms:hasVersion rdf:resource="http://dublincore.org/usage/terms/history/#Agent-001"/>
> </rdf:Description>
I'm not sure what you mean by "reduced". The Web document says:
Term Name: Agent
URI: http://purl.org/dc/terms/Agent
Label: Agent
Definition: A resource that acts or has the power to act.
Comment: Examples of Agent include person, organization, and software agent.
Type of Term: Class
Instance Of: http://purl.org/dc/terms/AgentClass
Version: http://dublincore.org/usage/terms/history/#Agent-001
This matches the RDF/XML output except for the addition, in the RDF/XML, of
rdfs:isDefinedBy and of the date issued (of the individual property or class).
> The HTML output ends up pulling in several definitions for
> http://purl.org/dc/dcam/VocabularyEncodingScheme. Perhaps this needs some
> additional filter to not define anything not in dcterms?
In the dcmi-terms/index.shtml output (RDFa-to-Turtle) I'm looking at, I only
see one entry for VocabularyEncodingScheme, as in [1]:
<http://purl.org/dc/dcam/VocabularyEncodingScheme>
dc:issued "2008-01-14";
rdfs:identifier <http://purl.org/dc/dcam/VocabularyEncodingScheme>;
rdfs:seeAlso <http://dublincore.org/documents/2007/06/04/abstract-model/>;
rdf:type rdfs:Class;
dc:hasVersion <http://dublincore.org/usage/terms/history/#VocabularyEncodingScheme-001> .
The rdfs:identifier is wrong, if only because rdfs:identifier does not exist...
Compared to the Web document [1], what is systematically missing in this
RDFa-to-Turtle output (and in the RDFa-to-Turtle output for all other
properties and classes) is:
rdfs:label for the "Term Name"
rdfs:comment for the "Definition"
dcterms:description for the "Comment" (though not for "VocabularyEncodingScheme", which does not have one)
What is systematically missing compared to the RDF/XML output (e.g., [2]):
rdfs:isDefinedBy <http://purl.org/dc/terms/>
[1] http://dublincore.org/documents/dcmi-terms/#dcam-VocabularyEncodingScheme
[2] http://dublincore.org/2010/10/11/dcterms.rdf
> RDF/XML version does not provide a datatype definition for dcterms:issued and
> dcterms:modified. This is done in HTML using the <time> element, where the
> datatype is implicit.
+1
> HTML version outputs rdfs:identifier equivalent to the subject. This is easily omitted.
+1 (see above)
> The XSL was not outputting RDF for text properties, which I've corrected in
> my working branch.
+1 - I should have read the message through before responding...!
The other error I see is:
rdfs:domain dc:Collection;
where Collection is a term from the DCMI Type Vocabulary, not /terms/, and
should thus be given with its full URI <http://purl.org/dc/dcmitype/Collection>
or using a @prefix for the Type Vocabulary:
rdfs:domain dc:Collection;
rdfs:domain dc:Collection;
rdfs:domain dc:Collection;
Do I correctly understand that if the HTML/RDFa document completely expresses the
contents of the current HTML and RDF/XML documents, and we direct the PURLs to that
document, we could delete (or rather archive) the XSL scripts used to generate the
RDF/XML? The other simplifications I would like to make are:
-- Delete (or archive) the XSL script for generating the (redundant) stand-alone
DCMI Type Vocabulary document.
-- Revert to the pre-RDFa XSL script for generating the "history" document [2].
This means that only one XSL script for generating RDFa would need to be
maintained.
It looks to me like we are getting very close!
Tom
[2] http://dublincore.org/usage/terms/history/
--
Tom Baker <tom@tombaker.org>
Received on Friday, 11 May 2012 18:07:41 UTC