On 3/26/12 3:16 PM, Martin Hepp wrote:
Hi all:

My example about rdfs:isDefinedBy remains, a majority of ontologies constructed by folks 
who grok the fundamentals still don't include rdfs:isDefinedBy relations. Thus, I've 
resorted to fixing those ontologies when ingested instead of pinging the ontology 
authors. The same thing applies (even more) to wdrs:describedby which ended getting fixed 
in response to my "tale of two missing predicates" post [1] around the time of 
the Toucan post etc..

FYI:

http://www.productontology.org implements both rdfs:isDefinedBy and 
wdrs:describedby, I hope correctly.

See

http://www.productontology.org/doc/Hammer (with conneg)
http://www.productontology.org/doc/Hammer.ttl
http://www.productontology.org/doc/Hammer.rdf



In fact, www.productontology.org tries to model all distinct conceptual 
entities and their relationships in a very granular way, see:


<http://www.productontology.org/doc/Hammer.rdf>  a foaf:Document;
        foaf:primaryTopic<http://www.productontology.org/id/Hammer>.
<http://www.productontology.org/doc/Hammer.ttl>  a foaf:Document;
        foaf:primaryTopic<http://www.productontology.org/id/Hammer>.
<http://www.productontology.org/doc/Hammer>  a foaf:Document;
        foaf:primaryTopic<http://www.productontology.org/id/Hammer>.
        
<http://www.productontology.org/id/Hammer>  a owl:Class;
        rdfs:isDefinedBy<http://www.productontology.org/#>;
...
        
wdrs:describedby<http://www.productontology.org/doc/Hammer.rdf>,<http://www.productontology.org/doc/Hammer.ttl>;
        foaf:homepage<http://www.productontology.org/doc/Hammer.html>;
        foaf:page<http://en.wikipedia.org/wiki/Hammer>.

GoodRelations, the Vehicle Sales Ontology, the Tickets Ontology, the Volkswagen 
Car Options Ontology, and the Volkswagen Vehicles Ontology all contain at least 
rdfs:isDefinedBy axioms.

http://purl.org/goodrelations/v1
http://purl.org/vso/ns
http://purl.org/tio/ns
http://purl.org/coo/ns
http://purl.org/vvo/ns

But I think you can hardly get this correct without

1. reading RFC 2616 over and over again and
2. having the privilege of getting feedback from Kingsley.

;-)

Martin


--------------------------------------------------------
martin hepp
e-business&  web science research group
universitaet der bundeswehr muenchen

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Check out GoodRelations for E-Commerce on the Web of Linked Data!
=================================================================
* Project Main Page: http://purl.org/goodrelations/





Martin,

Awesome!

See: http://linkeddata.uriburner.com/about/html/http/www.productontology.org/doc/Hammer .

--

Regards,

Kingsley Idehen 
Founder&  CEO
OpenLink Software
Company Web: http://www.openlinksw.com
Personal Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca handle: @kidehen
Google+ Profile: https://plus.google.com/112399767740508618350/about
LinkedIn Profile: http://www.linkedin.com/in/kidehen






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