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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] The Power of Virtuoso Sponger Technology

Martin Hepp (UniBW) hepp at ebusiness-unibw.org
Sat Oct 17 11:22:15 CEST 2009

Dear all:

I just found out that the Virtuoso Sponger Technology is even more 
powerful than I thought.

Briefly: "Spongers" create rich GoodRelations (and other RDF) meta-data 
for existing Web pages on-the-fly. Other than traditional 
screen-scraping approaches, Spongers reuse public APIs and other 
techniques, so the data is of unprecedented degree of structure.

Now, this can be directly used in arbitrary queries... by simply using 
the URI of the *existing* HTML Web page in the FROM clause of a SPARQL 



is a Web page offering a book. Amazon does not yet produce GoodRelations 
meta-data on their pages.

If you go to


and paste the URI in the "Default Graph URI " field and select "Retrieve 
remote RDF for all missing source graphs", then a query like

   "SELECT * WHERE {?s ?p ?o} LIMIT 50"

returns a fully-fledged GoodRelations description for that page - as if 
Amazon was already supporting GoodRelations for each of its > 4 million 

There are spongers for BestBuy, eBay, Zillow, and many other types of 


Best wishes

Martin Hepp

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!


Recipe for Yahoo SearchMonkey:

Talk at the Semantic Technology Conference 2009: 
"Semantic Web-based E-Commerce: The GoodRelations Ontology"

Overview article on Semantic Universe:

Project page:

Resources for developers:

Tutorial materials:
CEC'09 2009 Tutorial: The Web of Data for E-Commerce: A Hands-on Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey 

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