Re: RDFa in HTML5

On 1/6/12 8:34 AM, Augusto Herrmann wrote:
> On Fri, Jan 6, 2012 at 10:08 AM, Kingsley Idehen<kidehen@openlinksw.com>  wrote:
>> What about the Microdata in the HTML? Is that as sparse as the RDFa re.
>> triples embedded in the HTML?
> I think embedding both RDFa and Microdata in the same HTML would
> complicate matters greatly, and we'd have to settle for one of them
> for the VCGE data.

Not asking you to mix them. Saying, look at how we deal with it via 
<link/> relations, for instance.
>
>> Re. URIBurner, note its ability to produce both RDFa and Microdata from the
>> RDF it negotiates. Ditto JSON-LD :-)
> It's really cool that there's RDFa in the generated URIBurner code!
> However, I could find no Microdata embedded into the HTML (e.g. a
> search for "itemprop" returns empty):
>
> $ curl -s http://linkeddata.uriburner.com/describe/?url=http%3A%2F%2Fvocab.e.gov.br%2F2011%2F03%2Fvcge%23imigrantes
> | grep itemprop

Look at the footer of a URIBurner page. Or look in <head/> or look at 
the "Link:" response headers re. alternative representation formats .

>
> Is a particular parameter required in order to return HTML5 +
> Microdata from URIBurner? I found that adding a parameter
> output=application%2Fmicrodata%2Bjson to the URL does return data in
> the application/microdata+json format, but I found no way to get it
> embedded into HTML.
>
> Also, about the generated RDFa, I found this bit a little strange
> (intentation added by myself):
>
> <body about="http://vocab.e.gov.br/2011/03/vcge#imigrantes">
> ...
>      <ul class="obj">
>          <li>
>              <span class="literal">
>                  <!-- 43 -->
>                  <a class="uri" rel="rdf:type"
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> href="/describe/?url=http%3A%2F%2Fwww.w3.org%2F2004%2F02%2Fskos%2Fcore%23Concept">Concept</a>
>              </span>
>          </li>
>      </ul>
> ...
> </body>
>
> This produces the following triple (see RDFa distiller [1]):
>
> <http://vocab.e.gov.br/2011/03/vcge#imigrantes>  a
> <http://linkeddata.uriburner.com/describe/?url=http%3A%2F%2Fwww.w3.org%2F2004%2F02%2Fskos%2Fcore%23Concept>
>   .
>
> Shouldn't the type be just
> <http://www.w3.org/2004/02/skos/core#Concept>, as asserted in the
> source material, instead of escaping the URL around URIBurner?
>
> [1] http://www.w3.org/2007/08/pyRdfa/
>
> Regards,
> Augusto Herrmann
>
>


-- 

Regards,

Kingsley Idehen	
Founder&  CEO
OpenLink Software
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Received on Friday, 6 January 2012 14:05:23 UTC