- From: Steven Pemberton <steven.pemberton@cwi.nl>
- Date: Tue, 30 Sep 2008 13:30:57 +0200
- To: "Dan Brickley" <danbri@danbri.org>, RDFa <public-rdf-in-xhtml-tf@w3.org>, "www-tag@w3.org WG" <www-tag@w3.org>
- Cc: "Ed Summers" <ehs@pobox.com>
My preferred practice for naming concepts is to use blank nodes and then foaf:primaryTopicOf to ground them: <link about="_:StevenPemberton" rel="foaf:primaryTopicOf" href="http://www.cwi.nl/~steven/" /> <link about="_:Amsterdam" rel="foaf:primaryTopicOf" href="http://www.amsterdam.nl/" /> <link about="_:W3C" rel="foaf:primaryTopicOf" href="http://www.w3.org/" /> <link about="_:TheWasteLand" rel="foaf:primaryTopicOf" href="http://en.wikipedia.org/wiki/The_Waste_Land" /> <link about="_:Love" rel="foaf:primaryTopicOf" href="http://en.wikipedia.org/wiki/Love" /> <span about="_:TheWasteLand" property="dc:creator">T.S. Eliot</span> <a about"_:W3C" rel="foaf:homepage" href="http://www.w3.org/">W3C</a> I have a nascent proposal to reserve a http scheme to make this easier to write: <span about="pto:http://en.wikipedia.org/wiki/The_Waste_Land" property="dc:creator">T.S. Eliot</span> but let's not argue about that now. Best wishes, Steven On Tue, 30 Sep 2008 12:50:02 +0200, Dan Brickley <danbri@danbri.org> wrote: > Looks like http-range-14 still haunts us. I'm looking for some best > practice advice for using "#blahblah" URI IDs in RDFa content... > > Backstory - > > Edd Summers has put up a great site at http://lcsh.info/ > > It has one page for each concept listed in the Library of Congress > Subject Headings, eg. http://lcsh.info/sh85112589 is a URI for a > document about the LCSH heading "Religion and the Humanities". > > There is RDFa in the HTML page, as well as a complete NTriples zip-file > download of the dataset. The RDFa uses a #concept URI to identify the > abstract concept that the document is describing with SKOS. > > <div class="concept" about="http://lcsh.info/sh85112589#concept" > typeof="skos:Concept"> > > The document also has an RDF/XML representation available by content > negotiation. While the triples differ a little (Ed - is this a bug?), > they all talk about the SKOS concepts via identifiers that take the main > page's URI and append '#concept'. > > Is it TAG-acceptable to use a URI in this manner, when > http://lcsh.info/sh85112589 is the URI for a document available in RDFa > XHTML rather than RDF/XML? What does > "http://lcsh.info/sh85112589#concept" name? How do we 'follow our nose' > here? Should the media type definition for RDFa allow the assignation of > URIs to things other than chunks of markup? > > Does anyone have a suggestion for how if at all this should be done > differently? My sense is that the HTML spec as-is doesn't license us to > assign URIs in this way. And since #foo is to be interpreted w.r.t. to > the (set of?) media types we get back as HTTP representations, there > seems to be a tension here between using conneg and using rdfa and > avoiding having to do http 303 redirects... > > cheers, > > Dan > > > > curl -s http://lcsh.info/sh85112589 | rapper -i rdfa - file: > > rapper: Parsing file <stdin> with parser rdfa and base URI file: > rapper: Serializing with serializer ntriples and base URI file: > > <file:> <http://www.w3.org/1999/xhtml/vocab#alternate> > <http://lcsh.info/sh85112589.rdf> . > <file:> <http://www.w3.org/1999/xhtml/vocab#alternate> > <http://lcsh.info/sh85112589.n3> . > <file:> <http://www.w3.org/1999/xhtml/vocab#alternate> > <http://lcsh.info/sh85112589.json> . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://www.w3.org/2004/02/skos/core#Concept> . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#prefLabel> "Religion and the > humanities" . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#altLabel> "Humanities and religion" > . > <http://lcsh.info/sh85112589#concept> <http://purl.org/dc/terms/created> > "1986-02-11" . > <http://lcsh.info/sh85112589#concept> > <http://purl.org/dc/terms/modified> "1986-02-11T00:00:00" . > rapper: Parsing returned 8 triples > > > curl -H "Accept: application/rdf+xml" -s http://lcsh.info/sh85112589 | > rapper -i rdfxml - file: > > rapper: Parsing file <stdin> with parser rdfxml and base URI file: > rapper: Serializing with serializer ntriples and base URI file: > > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#altLabel> "Humanities and > religion"@en . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://www.w3.org/2004/02/skos/core#Concept> . > <http://lcsh.info/sh85112589#concept> <http://purl.org/dc/terms/created> > "1986-02-11"^^<http://www.w3.org/2001/XMLSchema#date> . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#prefLabel> "Religion and the > humanities"@en . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#broader> > <http://lcsh.info/sh85062913#concept> . > <http://lcsh.info/sh85112589#concept> > <http://purl.org/dc/terms/modified> > "1986-02-11T00:00:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> . > <http://lcsh.info/sh85112589#concept> > <http://www.w3.org/2004/02/skos/core#inScheme> <http://lcsh.info/> . > rapper: Parsing returned 7 triples > > >
Received on Tuesday, 30 September 2008 11:32:19 UTC