[RDFa TC] Proposal for TC42-45 regarding FOAF semantics

The following is the report and a proposal on my 

ACTION: Michael look for a more semantically correct predicate for tests
42-45
[recorded in http://www.w3.org/2007/09/06-rdfa-minutes.html#action14]


Background: 
FOAF Vocabulary Specification 0.9 [1]

Problem: 
TC42-45 use foaf:img - this is semantically wrong.

Analysis:

 Relevant properties are
  + foaf:depiction [2], 
  + foaf:depicts [3], which is the inverse of foaf:depiction, and
  + foaf:img [4], a sub-property of foaf:depiction

 foaf:depiction has owl:Thing as domain, while
 foaf:img has foaf:Person as domain. AFAIU there exists no
 inverse of foaf:img (which is IMHO not relevant to our problem,
however:)

Conclusion: 
Use foaf:depiction instead of foaf:img, as every resource
is an owl:Thing, and so is the Web page.

@DanB: Any objections?

Cheers,
	Michael

[1] http://xmlns.com/foaf/0.1/
[2] http://xmlns.com/foaf/0.1/#term_depiction
[3] http://xmlns.com/foaf/0.1/#term_depicts
[4] http://xmlns.com/foaf/0.1/#term_img

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 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH
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Received on Thursday, 4 October 2007 14:36:48 UTC