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Great!
Thanks for the tips, Martin.

A.

2010/6/11 Martin Hepp (UniBW) <martin.hepp at ebusiness-unibw.org>

> Hi Andrés,
> thanks for your post.
>
> 1. In general, I would suggest to use relative URIs for the "about"
> attribute so that the final element will have a hash URI reference that
> point to the page containing the markup, rather than to an external page.
>
> So in a page at someblog.com, you should rather have
>
> <div typeof="sioc:Post" about="#post>
>
> than
>
>
> <div typeof="sioc:Post" about="http://myindex.com#post>
>
> Otherwise, someone trying to look up the definition for ...#post from the
> "semantic web" data will be directed to "http://myindex.com", which does
> not contain that markup.
>
> Note that "about" in RDFa does not define the topic of the post, but teh
> URI to associate with the current HTML element.So @ someblog.com/ we have
> something like the following:
>
>  This is some content related to the product.
>> It also includes a<span typeof="gr:Offering" about="
>> http://myindex.com#offer"><a rel="foaf:page"
>> href="http://somestore.com">special
>> discount offer</a></span>  of the product.
>> </span>
>> <span rel="sioc:about" resource="
>> http://www.savingsocrates.com/market/atrapalocl_12#offer"></span>
>> </div>
>>
>>
>>
> At first view, that looks okay.
>
>  @ myindex.com, something like this:
>> (xml name spaces are not shown)
>>
>> <div typeof="gr:Offering" about="#offer">
>>     (some gr markup)
>>     <a rel="foaf:page" href="http://somestore.com">Buy it here!</a>
>> </div>
>>
>>
>>
> At first view, that looks okay.
>
>  @ somestore.com, plain and simple: no RDFa markup, just buy the product.
>>
>>
> I would also put RDFa for the offer into the somestore pages.
>
> As for authoring (and debugging) such markup, I suggest:
>
> 1. Use the Turtle RDF syntax for modeling the data.
> 2. Convert Turtle to RDF/XML with http://www.rdfabout.com/demo/validator/<
> http://www.rdfabout.com/demo/validator/>
> 3. Convert resulting RDF/XML to RDFa snippet with
> http://www.ebusiness-unibw.org/tools/rdf2rdfa/
>
> For checking whether your markup is correct, use the PyRDFa extractor and
> check the resulting RDF in Turtle syntax:
>
> http://www.w3.org/2007/08/pyRdfa/
>
> Also see
>
> http://www.ebusiness-unibw.org/wiki/RDFaAuthoring
>
> Best wishes
>
> Martin Hepp
>
>> I already checked out quite some of the GR recipes, as well as the recent
>> updates. My main concern is to get relation between URIs correctly,
>> really.
>> Am I making the correct connections between the 3 different URLs?
>> Also, I tried out myindex.com with google's Rich Snippet preview tool,
>> and
>> it only works with reviews and location markup. I'm sure it should be a
>> problem with my syntaxis, though.
>>
>>
>> Hope this raises some debate :D. Hope I was clear enough, too.
>>
>> Andrés
>>
>> ps. If you recognize my last name, I'm Aldo's evil marketing twin.
>>
>>
>>
>> _______________________________________________
>> goodrelations mailing list
>> goodrelations at ebusiness-unibw.org
>> http://ebusiness-unibw.org/cgi-bin/mailman/listinfo/goodrelations
>>
>>
>
> --
> --------------------------------------------------------------
> martin hepp
> e-business&  web science research group
> universitaet der bundeswehr muenchen
>
> e-mail:  hepp at ebusiness-unibw.org
> phone:   +49-(0)89-6004-4217
> fax:     +49-(0)89-6004-4620
> www:     http://www.unibw.de/ebusiness/ (group)
>         http://www.heppnetz.de/ (personal)
> skype:   mfhepp
> twitter: mfhepp
>
> Check out GoodRelations for E-Commerce on the Web of Linked Data!
> =================================================================
>
> Project page:
> http://purl.org/goodrelations/
>
> Resources for developers:
> http://www.ebusiness-unibw.org/wiki/GoodRelations
>
> Webcasts:
> Overview - http://www.heppnetz.de/projects/goodrelations/webcast/
> How-to   - http://vimeo.com/7583816
>
> Recipe for Yahoo SearchMonkey:
> http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey
>
> Talk at the Semantic Technology Conference 2009:
> "Semantic Web-based E-Commerce: The GoodRelations Ontology"
>
> http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287
>
> Overview article on Semantic Universe:
>
> http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html
>
> Tutorial materials:
> ISWC 2009 Tutorial: The Web of Data for E-Commerce in Brief: A Hands-on
> Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey
>
> http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009
>
>


-- 
Andrés Bucchi
SavingSocrates.com
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