>> Can anybody give a short comment on the use of facets:facets in 
>> http://simile.mit.edu/2006/01/ontologies/fresnel-facets?

Of course also the long answer was very appreciated. Thank you very much 
for clarifying this! So putting a property into the list makes it a 
facet. I don't know why I questioned that, of course that's the use of 
the list. However then, the members of the list are not even restricted 
to rdf:Propertys at all, are they? That's what I first had in mind you 
wanted to do, but I think I can live without this restriction, cause the 
application can care for this.


Jan

>> 
>> Do I have to make my rdf:Propertys be a :Facet to allow them 
>> beeing in the List?
> 
> An appropriate inference from the presence of a resource in a facet list 
> is that it is of type :Facet.  The general approach to RDF is to treat 
> it as an open world: if something is asserted to be black and also 
> asserted to be white, a proper resolution is that it is both, not that 
> one of the assertions is wrong.  Likewise, because a resource is in the 
> facet list, the proper resolution is that it is in fact a facet, not 
> that it is misplaced or not typed correctly.
> 
>> If yes, is it the right way to assign those properties :Facet as an 
>> additional type?
> 
> The above description is actually the way the Fresnel engine operates - 
> you don't need to assert that something is a :Lens, just that it applies 
> to a particular type or instance (or other valid lens selector).
> 
> So the short answer is no, you don't need to do anything special 
> regarding the :Facet type.
> 
> -- 
> Ryan Lee                  [email hidden]
> MIT CSAIL Research Staff  http://simile.mit.edu/
> http://people.csail.mit.edu/ryanlee/
> 
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