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

Could you use RDF Reification [1] to deprecate the statement?  E.g. 
assume an original statement

    <ex:a> <ex:hasURI> "http://orig.com/a"

and a later updated statement (asserting the better URI).

    <ex:a> <ex:hasURI> "http://better.com/a"

Could you use RDF reification to say the old statement is deprecated?

E.g. first make a new Thing that represents the old statement (_:xxx below)

    _:xxx rdf:type rdf:Statement .

    _:xxx rdf:subject <ex:a> .

    _:xxx rdf:predicate <ex:hasURI> .

    _:xxx rdf:object "http://orig.com/a" .

and then mark that statement as a deprecated statement.

    _:xxx rdf:type <ex:DeprecatedStatement>

Would something like that work for you?

 -Mark

References: 
[1]  RDF Reification.  http://www.w3.org/TR/rdf-mt/#Reif.

Mark Wallace
3-Sigma Research, Indialantic, Florida, USA



Jonathan Rees wrote:
> If you want to make a statement about a URI, you need to use a literal 
> "http:..." or something equivalent, not a reference <http:...>, since 
> in the latter case you're talking about what the URI names, not the 
> URI itself, and things can have more than one name - some of which 
> might be deprecated, and some not.
>
> For example, if http:A and http:B are both names for the same thing, 
> but the URI http:A is deprecated while http:B is not deprecated, then
>    <http:A> rdf:type deprecatedThing .
> implies
>   <http:B> rdf:type deprecatedThing .
> which would contradict
>   <http:B> rdf:type notDeprecatedThing .
> On the other hand
>   "http:A" rdf:type deprecatedURI .
> would not contradict
>   "http:B" rdf:type notDeprecatedURI .
> since the two URIs are different things.
>
> Yes, I know a literal can't be a subject, so you need to find a 
> different way to say this in RDF.  If you had a name for the party 
> that is doing the deprecating, you might say
>   deprecator deprecates "http:A" .
>   deprecator doesNotDeprecate "http:B" .
>
> Instead of saying that <http:A> is a deprecated thing, you could say
>   <http:A> rdf:type thingWithDeprecatedURI .
> but that doesn't help, does it? It doesn't tell you which of 
> <http:A>'s URIs is deprecated.
> Maybe something like
>   <http:A> hasDeprecatedURI "http:A" .
>   <http:A> hasNotDeprecatedURI "http:B" .
>   <http:B> hasDeprecatedURI "http:A" .
>   <http:B> hasNotDeprecatedURI "http:B" .
>
> (and I agree, phrasing statements like this positively is probably 
> better than phrasing them negatively e.g. "deprecation", but that's a 
> separate issue.)
>
> Jonathan
>
> On Tue, Jun 10, 2008 at 6:03 AM, Bernard Vatant 
> <bernard.vatant@mondeca.com <mailto:bernard.vatant@mondeca.com>> wrote:
>
>
>     All
>
>     Following my previous message mentioning lingvoj.org
>     <http://lingvoj.org> URIs, I had a message from Earle Martin,
>     early publisher of alternative URIs for languages at downlode.org
>     <http://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
>     <http://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
>     <http://downlode.org> URIs with something like
>     owl:DeprecatedIndividual
>
>