Re: SWBPD note on QCRs

Pat Hayes wrote:
> 
>> Peter, Ian,
>>
>> In the SW Best Practices group Alan Rector and I have been working on 
>> a note on QCRs, with the intention of providing guidance for ontology 
>> engineers. The note is mainly based on the work-arounds and proposals 
>> we developed during the WebOnt discussions about this. The current 
>> draft [1] has been lying around for a year or so (there were some 
>> formatting updates, but nothing major) and we would like to finish 
>> this now.
>> Patterns 1 & 2 in [1] are work-arounds for OWL as it is. I want to 
>> draw your attention to pattern 3, a "non-endorsed OWL extension", 
>> which actually comes from the WebOnt resolution on QCRs [2, end of the 
>> email].
>>
>> I was looking at OWL 1.1 documents [3, 4] to see what kind of syntax 
>> you propose. I found the abstract syntax, but no mapping to RDF/XML 
>> triples. I have two questions:
>>
>> - Is there a proposal for a OWL 1.1 RDF/XML representation of QCRs?
>>
>> - What do you think of the proposed RDF/XML syntax in pattern 3 of 
>> [1]? Comments and/or proposals for alternatives would be very much 
>> appreciated.
> 
> If I might interject, I have reservations about the suggested OWL/RDF 
> syntax, not because it is not natural, but because it is already legal 
> and already therefore has a semantics. I think that, in spite of (or 
> perhaps because of) the naturalness of simply adding the owl:valuesFrom 
> triple, that it would be better to introduce a new term for the QCR 
> case, perhaps owl:propertyValuesFrom, rather than re-use the older term 
> with a change of meaning. The syntax you propose is not in fact an OWL 
> extension, but an OWL alteration.

Pat,

I don't follow. "vaulesFrom" is not part of the current OWL vocabulary, 
so why would "proprtyValuesFrom" make a difference?

Guus

> 
> Pat
> 
>> Thanks.
>>
>> Best,
>> Guus
>>
>> [1] http://www.w3.org/2001/sw/BestPractices/OEP/QCR/
>> [2] http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0072.html
>> [3] http://www-db.research.bell-labs.com/user/pfps/owl/overview.html
>> [4] http://www-db.research.bell-labs.com/user/pfps/owl/syntax.html
>>
>> -- 
>> Vrije Universiteit Amsterdam, Computer Science
>> De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
>> T: +31 20 598 7739/7718; F: +31 84 712 1446
>> Home page: http://www.cs.vu.nl/~guus/
> 
> 

-- 
Vrije Universiteit Amsterdam, Computer Science
De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
T: +31 20 598 7739/7718; F: +31 84 712 1446
Home page: http://www.cs.vu.nl/~guus/

Received on Sunday, 7 May 2006 14:30:03 UTC