RE: Use of owl:versionInfo to record ontology version IRI in RDF

>-----Original Message-----
>From: public-owl-wg-request@w3.org [mailto:public-owl-wg-request@w3.org]
>On Behalf Of Ian Horrocks
>Sent: Monday, April 06, 2009 11:56 AM
>To: Alan Ruttenberg
>Cc: Uli Sattler; W3C OWL Working Group
>Subject: Re: Use of owl:versionInfo to record ontology version IRI in
>RDF
>
>We need to make a rapid decision about this one way or the other.
>
>As I understand it, both Uli and Alan think that we should introduce
>a new ontology annotation property, but Michael thinks that we don't
>need to do anything.

Hi!

This is a slight misunderstanding of my position. My mail was only about the
question on (non-)normativity of the text in the OWL Reference, and on the
actual state of the semantics of owl:versionInfo under the OWL 1/2 RDF-Based
Semantics. I was just saying that there is no /semantic/ problem with using
owl:versionInfo for versioning purposes.

However, I think I see the practical problem. When one maps an old ontology,
which uses the owl:versionInfo property with some string instead of an
ontology IRI, then this can lead to trouble with tools expecting an ontology
IRI there. It becomes even worse, if there is an IRI, but not an ontology
IRI (for example the homepage of the authoring tool vendor, instead). 

So I think having a new dedicated property owl:versionURI is perfectly fine.


I am just wondering what sort of property this will be under the RDF-Based
Semantics. I think it will be an owl:OntologyProperty, since both the LHS
and the RHS of the property are intended to be ontologies (modulo abuse,
which is always possible).

Cheers,
Michael

--
Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
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Fax  : +49-721-9654-727
Email: michael.schneider@fzi.de
WWW  : http://www.fzi.de/michael.schneider
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