- From: Ivan Herman <ivan@w3.org>
- Date: Tue, 20 Nov 2012 11:26:29 -0500
- To: Timothy Lebo <lebot@rpi.edu>
- Cc: "public-prov-wg@w3.org WG" <public-prov-wg@w3.org>
Some questions
- (just to make it sure) you staged these under CR-prov-***/ns but it is not the intention, is it, to put this into the /TR/2012/.../ns directory. The target for all these files is www.w3.org/ns
- The .owl extension goes to RDF/XML files, I presume. I wonder whether we should not use extension-less URI-s everywhere, eg, http://www.w3.org/ns/prov-o-20120724, and let conneg work to choose among RDF/XML or turtle versions. You should check whether an average OWL processor handles such conneg properly...
- What will I get if I dereference http://www.w3.org/ns/prov ?
Ivan
On Nov 20, 2012, at 10:25 , Timothy Lebo wrote:
> Ivan, prov-wg, OWL-in-practice gurus, and anyone concerned with the "prov ns concatenation" issue,
>
> I've staged the prov-o ontology files to go into /ns:
>
> http://dvcs.w3.org/hg/prov/file/tip/ontology/releases/CR-prov-o-20121211/ns
>
> The directory contains the files for {prov, inverses} \cross {versioned, unversioned} \cross {rdf/xml, turtle}
>
> Each of the two ontologies (provo, inverses) has a owl:versionIRI, prov:wasRevisionOf, and prov:specializationOf, i.e.,
>
> from provo http://dvcs.w3.org/hg/prov/file/de8cda493917/ontology/releases/CR-prov-o-20121211/ns/prov-o.ttl#l30 :
>
> 30 <http://www.w3.org/ns/prov#
> >
>
> 31 a owl:Ontology ;
> 37 owl:versionIRI <http://www.w3.org/ns/prov-o-20121211.owl
> > ;
>
> 38 :specializationOf <http://www.w3.org/ns/prov-o.owl
> > ;
>
> 39 :wasRevisionOf <http://www.w3.org/ns/prov-o-20120724.owl> .
>
> and from inverses http://dvcs.w3.org/hg/prov/file/de8cda493917/ontology/releases/CR-prov-o-20121211/ns/prov-o-inverses.ttl#l7 :
>
> 7 <> a owl:Ontology;
> 11 owl:versionIRI <http://www.w3.org/ns/prov-o-inverses-20121211.owl
> >;
>
> 12 prov:wasRevisionOf <http://www.w3.org/ns/prov-o-inverses-20120724.owl
> >;
>
> 13 prov:specializationOf <http://www.w3.org/ns/prov-o-inverses.owl> .
>
>
> The PROV HTML points to the "unversioned" OWL files, specifically:
>
> [[
> The OWL encoding of the PROV Ontology is available here (http://www.w3.org/ns/prov-o.owl)
> ]]
>
> and
>
> [[
> For convenience, this file (http://www.w3.org/ns/prov-inverses.owl) lists the resulting inverse properties.
> ]]
>
>
> I believe from this setup that consumers will be able to:
> * recognize when the OWL encoding was updated (via a new owl:versionIRI),
> * find the previous version (via wasRevisionOf), and
> * find the latest version at any point in the future from their current copy of the OWL encoding (specializationOf).
>
> 1) Do you agree? Is this an acceptable arrangement?
>
>
> 2) Looking ahead to the "namespace concatenation" [1], I would expect that I should change the URIs for the "provo" and "inverses" ontologies, to something like:
>
> http://www.w3.org/ns/prov-o#
> and
> http://www.w3.org/ns/prov-o-inverses#
>
> Does that sound reasonable?
>
> Thanks,
> Tim
>
>
>
> [1] http://www.w3.org/2011/prov/wiki/ProvNamespaceManagement#Solution_2.2_Use_owl:import_and_return_full_merge_of_PROV-O_and_all_Notes
>
----
Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Tuesday, 20 November 2012 16:26:57 UTC