Warning: This tool or project is no longer maintained and kept available only for archival purposes. Since GoodRelations and schema.org have evolved significantly in the past years, the current status available on this page is unlikely to function as expected. We take no responsibility for any damage caused by the use of this outdated work, to the extent legally possible.

Due to a lack of resources, we are unable to provide support for this project outside of consulting projects or sponsored research. Please contact us if you can contribute resources to update and enhance these resources.

GoodRelations - The Web Vocabulary for E-Commerce

This is the archive of the goodrelations dicussion list

GoodRelations is a standardized vocabulary for product, price, and company data that can (1) be embedded into existing static and dynamic Web pages and that (2) can be processed by other computers. This increases the visibility of your products and services in the latest generation of search engines, recommender systems, and other novel applications.

[goodrelations] Great tool! - How to implement in XHTML + RDFa?

Martin Hepp (UniBW) martin.hepp at ebusiness-unibw.org
Thu Apr 9 14:37:01 CEST 2009

Hi Darren,
thanks for your interest. As for RDFa:

1.) There will be full-day tutorial on using GoodRelations and RDFa at 
ESWC 2009, see

This will also be available via videolectures.net in July or August.

2.) We are working on a recipe for using GoodRelations with RDFa, the 
"construction site" is at


There is also a presentation showing it step by step,  see


(skip the first slides on RDFa in general).

In general, you can use both
a) one XHTML file for browsers and one RDF/XML file for the Semantic Web
b) one XHTML file plus embedded RDF = XHTML+RDFa for all in one.

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.

For Semantic Web applications, both can be used - there are free 
libraries for extracting RDF from RDFa, e.g.


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.

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.

In the long run, I think RDFa will dominate for
a) pages based on static XHTML
b) PHP-based dynamic Web applications with pretty shallow RDF export needs.

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).

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.

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.

Hope that helps!



Darren Lovelock wrote:
> Hi List,
> 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.
> We are looking to start using XHTML + RDFa so we can insert the 
> attributes dynamically into our e-commerce software.
> I must say that your new Good Relations tool was a great surprise, my 
> business partner and I have already started using it.
> Would you be able to point me to a tutorial or comprehensive guide 
> that will show how to use this information in XHTML?
> 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!
> Any help will be greatly appreciated.
> Kind regards,
> Darren Lovelock
> Munky Online Web Design
> http://www.munkyonline.co.uk <http://www.munkyonline.co.uk/>
> T: +44 (0)20-8816-8893
> ------------------------------------------------------------------------
> _______________________________________________
> goodrelations mailing list
> goodrelations at ebusiness-unibw.org
> http://ebusiness-unibw.org/cgi-bin/mailman/listinfo/goodrelations
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ebusiness-unibw.org/pipermail/goodrelations/attachments/20090409/2a36f456/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: martin_hepp.vcf
Type: text/x-vcard
Size: 308 bytes
Desc: not available
URL: <http://ebusiness-unibw.org/pipermail/goodrelations/attachments/20090409/2a36f456/attachment.vcf>

More information about the goodrelations mailing list