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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] foaf:page vs. foaf:topic

Richard Cyganiak richard at cyganiak.de
Sat Feb 13 14:40:21 CET 2010

Hi Martin,

On 13 Feb 2010, at 12:02, Martin Hepp (UniBW) wrote:
> Proposed Pattern:
> foo:microsoft a gr:BusinessEntity;
>                        gr:legalName "Microsoft Corp.";
>                        foaf:page <http://www.microsoft.com/>.

Looks good.

> foaf:topic could be used for linking back from the Web page URI to the
> data entity URI, e.g.
> <http://www.microsoft.com/> foaf:topic foo:microsoft.

Yes. foaf:topic is the inverse of foaf:page.

> What's your opinion on that? Will that work with your software
> applications? Or should we use foaf:topic instead? If so, in which
> direction?

To give just one perspective: In our http://sig.ma both would work  
fine. If you used foaf:page, then the homepage URL would be shown next  
to a label saying “web page”. If you used foaf:topic, then it would be  
shown next to a label saying “is topic of”.

The first (foaf:page) is perhaps a little bit more straightforward.

> Alternative 2:
> foo:microsoft a gr:BusinessEntity;
>                        gr:legalName "Microsoft Corp.";
>                        foaf:topic <http://www.microsoft.com/>.

That's just plain wrong, as should be obvious from [1]. The document  
goes into the subject (domain), the thing that is the topic of the  
document goes into the object (range).


[1] http://xmlns.com/foaf/spec/#term_topic

> I personally think that the second alternative is wrong, because the
> data entity does not describe the Web page, but vice versa.
> Since this decision will be important for compatibility with SemWeb /
> Linkedata applications, I would be very thankful for your comments.
> 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!
> =================================================================
> 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
> _______________________________________________
> goodrelations mailing list
> goodrelations at ebusiness-unibw.org
> http://ebusiness-unibw.org/cgi-bin/mailman/listinfo/goodrelations

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