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Re: Suggestion for Microdata to RDF conversion

From: Benjamin Nowack <bnowack@semsol.com>
Date: Fri, 22 Jan 2010 10:12:47 +0100
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Cc: public-html@w3.org, "Philip Jšgenstedt" <philipj@opera.com>
Message-ID: <PM-GA.20100122101247.D6237.2.1D@semsol.com>

P.S. as I just saw Ian's comment on IRC[1]:

This algorithm ignores non-RDF structures such as

   <div itemscope itemtype="http://example.com/">
      <span itemprop="a/b"/>
   </div>
or
   <div itemscope itemtype="http://example.com/a/">
      <span itemprop="b"/>
   </div> 

because common RDF vocabularies simply don't use URI patterns 
like "http://example.com/" or "http://example.com/a/" to 
declare resource types.

Requiring OWL magic to convert Microdata to its target
RDF vocabulary makes Microdata even more complex to understand
than RDFa. OWL is well beyond what a Microdata-to-RDF parser
writer should need to know.

Cheers,
Benji

[1] http://krijnhoetmer.nl/irc-logs/whatwg/20100122#l-168


On 21.01.2010 16:56:39, Tab Atkins Jr. wrote:
>On Thu, Jan 21, 2010 at 3:36 PM, Benjamin Nowack <bnowack@semsol.com> wrote:
>> * The parser finds itemtype=http://xmlns.com/foaf/0.1/Person
>> * In common RDF practice, this (slash-)URI represents an RDF
>>  Class called "Person" from an RDF vocabulary identified by
>>  "http://xmlns.com/foaf/0.1/" (The other case are hash-URIs,
>>  where the term name is separated from the vocabulary URI
>>  by a #, e.g. as in "http://rdfs.org/sioc/ns#User").
>
>Is it possible to relatively reliably distinguish between slash and
>hash uri structures based on the itemtype?  If so, can your algorithm
>be extended to also handle the common hash-uri structure?
Received on Friday, 22 January 2010 09:13:20 GMT

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