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Re: OWL dot OWL file

From: Ivan Herman <ivan@w3.org>
Date: Wed, 22 Jul 2009 11:55:10 +0200
Message-ID: <4A66E1FE.2000306@w3.org>
To: Michael Schneider <schneid@fzi.de>
CC: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk>, W3C OWL Working Group <public-owl-wg@w3.org>
Hi Michael

(Background: some months ago I went through the RDF based semantics
document and I extracted the axiomatic triples based on the spec. What I
compare is what I did then and what Michael has done now)

Everything you have there seems to be correct (no surprise...).
Actually, I had some triples missing in my version...

My list for RL also includes facts about the datatypes that are nowhere
stated other than the xsd document. Things like:

(xsd:anyURI, owl:disjointWith, xsd:base64Binary),
(xsd:long, owl:subClassOf, xsd:integer),

It may be worth thinking about adding those to owl.owl, though not
necessarily to the RDF Bases semantics document.

I also did a conversion of your content into RDF/XML, added a copy of
the annotation that is in the current version on the web. The result is on:

http://www.w3.org/2007/OWL/wiki/Owl2.owl

More comments can be added to the <Ontology> part of the file but,
essentially, I believe what is there can then be published as owl.owl
when the time comes, ie, putting this issue behind us.

Cheers

Ivan

Michael Schneider wrote:
> Hi again!
> 
> To complete my proposal from earlier this day, I have now added to the
> RDF-Based Semantics my proposal for the list of axiomatic triples, which I
> have talked about in the last TC:
> 
>  
> <http://www.w3.org/2007/OWL/wiki/RDF-Based_Semantics#List_of_Axiomatic_Tripl
> es>
> 
> The first two "blocks" on "CLASSES" and "PROPERTIES" are exactly what I have
> earlier proposed as the content of the owl2.owl ontology. It covers all the
> OWL 2 classes and properties, and in addition the four annotation properties
> from RDFS. So, by this means, owl2.owl would be represented in one of our
> OWL 2 documents, and would have the same state as in OWL 1: There, it was
> /informative/ and was contained in an appendix (in the Reference document).
> The nice thing here is that it perfectly matches the given place in the
> RDF-Based Semantics, it's not simply an "add on".
> 
> In addition, there are three further blocks on "DATATYPES", "FACETS" and on
> "ADDITIONAL AXIOMATIC TRIPLES FOR RDF AND RDFS", which I only consider to be
> of relevance for that section on "Axiomatic Triples" in the RDF-Based
> Semantics. The third block covers all the 30+ mandatory datatypes of OWL 2.
> The fourth block covers the facets (as datatype properties). The triples in
> these two blocks correspond to what's written in the texts of Section 5.2
> and 5.3 of the RDF-Based Semantics, respectively. The fifth block contains
> the triples that make several OWL terms equivalent to terms from RDF(S):
> e.g. owl:ObjectProperty is equivalent to rdf:Property in the OWL 2 RDF-Based
> Semantics.
> 
> @Ivan: Can you please have a closer look to this list, maybe checking with
> what's in your implementation? I could do this myself, but it's better to
> have a second pair of eyes on this large list.
> 
> Cheers,
> Michael
> 
> --
> Dipl.-Inform. Michael Schneider
> Research Scientist, Dept. Information Process Engineering (IPE)
> Tel  : +49-721-9654-726
> Fax  : +49-721-9654-727
> Email: michael.schneider@fzi.de
> WWW  : http://www.fzi.de/michael.schneider
> =======================================================================
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> Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe
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> Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
> =======================================================================
> 

-- 

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf



Received on Wednesday, 22 July 2009 09:55:46 GMT

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