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Hi Darren,<br>
thanks for your interest. As for RDFa: <br>
<br>
1.) There will be full-day tutorial on using GoodRelations and RDFa at
ESWC 2009, see<br>
<a class="moz-txt-link-freetext" href="http://www.ebusiness-unibw.org/wiki/GoodRelations_Tutorial_ESWC2009">http://www.ebusiness-unibw.org/wiki/GoodRelations_Tutorial_ESWC2009</a><br>
<br>
This will also be available via videolectures.net in July or August.<br>
<br>
2.) We are working on a recipe for using GoodRelations with RDFa, the
"construction site" is at<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.ebusiness-unibw.org/wiki/GoodRelations_Recipe_6">http://www.ebusiness-unibw.org/wiki/GoodRelations_Recipe_6</a><br>
<br>
There is also a presentation showing it step by step, see<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.ebusiness-unibw.org/pubwiki/images/4/4d/Www8.pdf">http://www.ebusiness-unibw.org/pubwiki/images/4/4d/Www8.pdf</a><br>
<br>
(skip the first slides on RDFa in general).<br>
<br>
In general, you can use both <br>
a) one XHTML file for browsers and one RDF/XML file for the Semantic
Web <br>
or<br>
b) one XHTML file plus embedded RDF = XHTML+RDFa for all in one.<br>
<br>
The advantage of b) is that you have all data in one place, and for
simple dynamic Web sites, you just add a bit of attributes and have
RDFa embedded automatically.<br>
<br>
For Semantic Web applications, both can be used - there are free
libraries for extracting RDF from RDFa, e.g.<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.w3.org/2007/08/pyRdfa/">http://www.w3.org/2007/08/pyRdfa/</a><br>
<br>
A slight advantage of solution b) is also that the current Yahoo
SearchMonkey technology crawls only for RDFa embedded in XHTML content,
not for pure RDF/XML resources.<br>
<br>
A downside of RDFa is that for complex data structures, it gets pretty
hard to create and maintain, since one is tangling data and
presentation.<br>
<br>
In the long run, I think RDFa will dominate for<br>
a) pages based on static XHTML<br>
b) PHP-based dynamic Web applications with pretty shallow RDF export
needs.<br>
<br>
Separate RDF/XML data dump files will dominate for more complex data or
when you want to feed frequently updated data into search engines
quickly (e.g. hotel room availability data).<br>
<br>
As for Yahoo, we have an RDF2dataRSS tool prototype which allows the
conversion from RDF/XML to the Yahoo dataRSS feed format. With that
tool, you can use RDF/XML files for publishing your data and still push
it into Yahoo.<br>
<br>
PS: If you want to use GoodRelations in RDFa, I recommend to first get
familiar with GoodRelations in RDF (RDF/XML or N3), then learn RDFa,
and then try to combine both. Starting with both at the same time adds
orders of magnitude of complexity. RDFa is simple for simple things,
but difficult for any advanced stuff.<br>
<br>
<br>
Hope that helps!<br>
<br>
Best<br>
<br>
Martin<br>
<br>
<br>
Darren Lovelock wrote:
<blockquote cite="mid:003a01c9b909$af7dc7f0$3701a8c0@munky" type="cite">
<title>Munkyonline.co.uk Stationery</title>
<meta http-equiv="Content-Type" content="text/html; ">
<meta content="MSHTML 6.00.6000.16809" name="GENERATOR">
<div><span class="921394411-09042009">Hi List,</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">I signed up on the list
yesterday as our company is looking into ways of making our clients
e-commerce websites more search engine friendly.</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">We are looking to start using
XHTML + RDFa so we can insert the attributes dynamically into our
e-commerce software.</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">I must say that your new Good
Relations tool was a great surprise, my business partner and I have
already started using it.</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">Would you be able to point me
to a tutorial or comprehensive guide that will show how to use this
information in XHTML?</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">I understand the logic behind
it but not how the page should be structured, there seems to be a lot
of documentation but few examples!</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">Any help will be greatly
appreciated.</span></div>
<div><span class="921394411-09042009"></span> </div>
<div><span class="921394411-09042009">Kind regards,</span></div>
<div> </div>
<div align="left">
<div dir="ltr" align="left"><span class="265551414-10122007">Darren
Lovelock</span></div>
<div dir="ltr" align="left"><span class="265551414-10122007">Munky
Online Web Design</span></div>
<div dir="ltr" align="left"><span class="265551414-10122007"><a
moz-do-not-send="true" href="http://www.munkyonline.co.uk/">http://www.munkyonline.co.uk</a></span></div>
<div dir="ltr" align="left"><span class="265551414-10122007"><font
color="#800000">T</font>: +44 (0)20-8816-8893</span></div>
</div>
<div> </div>
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