How do you deprecate URIs? Re: OWL-DL and linked data

All

Following my previous message mentioning lingvoj.org URIs, I had a 
message from Earle Martin, early publisher of alternative URIs for 
languages at downlode.org.
Considering that lingvoj URIs are "better" than his own URIs (thanks), 
he wants the downlode URIs to be flagged as deprecated and replaced by 
the matching lingvoj URIs.
On my side I want to keep track of those URIs at lingvoj.org, if only 
for backward compatibility, and to acknowledge the pioneering work of 
Earle in this domain. :-)

How should we do that?

My first thought was to flag the downlode.org URIs with something like 
owl:DeprecatedIndividual
<http://downlode.org/rdf/iso-639/languages#da>    
owl:DeprecatedIndividual    "True"
... but found out that such a property does not exist. OWL allows to 
deprecate classes and properties, but not individuals :-( . Why so, I 
don't know, since individuals are at least as versatile as classes and 
properties, they are as likely to be deprecated.
And, supposing such a property exists, the semantics of it would be 
depreciation of the *entity*, not of the URI ... which means if I 
declare something as the above alongside with
<http://downlode.org/rdf/iso-639/languages#da>    owl:sameAs      
<http://www.lingvoj.org/lang/da>
I can infer that the lingvoj.org URI, or exactly the resource it 
identifies, is also deprecated! Which is of course not at all the 
intended semantics ...

So ... I wonder. Any idea welcome ...

Bernard


-- 

*Bernard Vatant
*Knowledge Engineering
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Received on Tuesday, 10 June 2008 10:04:59 UTC