RE: Implemented Resolution of LC Comment 34 (TQ) on property chains in RDF-Based Semantics

--
Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
Tel  : +49-721-9654-726
Fax  : +49-721-9654-727
Email: schneid@fzi.de
WWW  : http://www.fzi.de/ipe/eng/mitarbeiter.php?id=555

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FZI Forschungszentrum Informatik an der Universität Karlsruhe
Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe
Tel.: +49-721-9654-0, Fax: +49-721-9654-959
Stiftung des bürgerlichen Rechts
Stiftung Az: 14-0563.1 Regierungspräsidium Karlsruhe
Vorstand: Prof. Dr.-Ing. Rüdiger Dillmann, Dipl. Wi.-Ing. Michael Flor,
Prof. Dr. rer. nat. Dr. h.c. Wolffried Stucky, Prof. Dr. rer. nat. Rudi
Studer
Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus

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>-----Original Message-----
>From: Ian Horrocks [mailto:ian.horrocks@comlab.ox.ac.uk]
>Sent: Monday, March 02, 2009 10:52 PM
>To: Michael Schneider
>Cc: Boris Motik; Peter Patel-Schneider; OWL Working Group WG
>Subject: Re: Implemented Resolution of LC Comment 34 (TQ) on property
>chains in RDF-Based Semantics
>
>Excellent.
>
>I incorporated this into the response JC1b.
>
>I suppose that we also need to change (at least?) the Mapping to RDF.

Also the RL rules in the Profiles document, because they also treat sub
property chains. 

And probably also the user facing documents that contain RDF code, unless
they do not talk about property chains.

>Ian

Cheers,
Michael

>On 25 Feb 2009, at 04:19, Michael Schneider wrote:
>
>> Hi!
>>
>> LC Comment 34 (Top Quadrant) on "Property chain inclusion
>> axioms" [1] (under "Other comments") stated:
>>
>> """
>> We have some concerns with the use of blank nodes
>> in the subPropertyOf triple corresponding to a RIA.
>> [...]
>> We believe introducing a new property in the RDF mapping
>> for RIA and avoiding the use of subPropertyOf
>> is probably a better trade off here.
>> """
>>
>> At F2F5, the working group has decided [2a] to change the current
>> RDF encoding of sub property chain axioms to a single triple form,
>> which avoids the blank node on the left hand side and the use of
>> "subPropertyOf". The new vocabulary term
>> "owl:propertyChainAxiom" [2b] has been introduced.
>>
>> I have implemented this resolution in the RDF-Based Semantics. See
>> the diff at [3].
>>
>> Cheers,
>> Michael
>>
>> [1] LC Comment: <http://lists.w3.org/Archives/Public/public-owl-
>> comments/2009Jan/att-0051/index.html>
>> [2a] Resolution: <http://www.w3.org/2009/02/24-owl-irc#T16-34-32-1>
>> [2b] Addendum: <http://www.w3.org/2009/02/24-owl-irc#T16-33-31>
>> [3] Diff: <http://www.w3.org/2007/OWL/wiki/index.php?title=RDF-
>> Based_Semantics&diff=18494&oldid=18493>
>>
>> --
>> Dipl.-Inform. Michael Schneider
>> Research Scientist, Dept. Information Process Engineering (IPE)
>> Tel  : +49-721-9654-726
>> Fax  : +49-721-9654-727
>> Email: schneid@fzi.de
>> WWW  : http://www.fzi.de/ipe/eng/mitarbeiter.php?id=555
>>
>> ======================================================================
>> ========
>>
>> FZI Forschungszentrum Informatik an der Universität Karlsruhe
>> Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe
>> Tel.: +49-721-9654-0, Fax: +49-721-9654-959
>> Stiftung des bürgerlichen Rechts
>> Stiftung Az: 14-0563.1 Regierungspräsidium Karlsruhe
>> Vorstand: Prof. Dr.-Ing. Rüdiger Dillmann, Dipl. Wi.-Ing. Michael
>> Flor,
>> Prof. Dr. rer. nat. Dr. h.c. Wolffried Stucky, Prof. Dr. rer. nat.
>> Rudi Studer
>> Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
>>
>> ======================================================================
>> ========
>>