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Re: [ontolog-forum] {Disarmed} Re: OWL and lack of identifiers

To: Ontolog Forum <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Waclaw Kusnierczyk <Waclaw.Marcin.Kusnierczyk@xxxxxxxxxxx>
Date: Sun, 15 Apr 2007 20:36:28 +0200
Message-id: <462270AC.4030205@xxxxxxxxxxx>
Re: Peter F Brown's post (Sat, 14 Apr 2007 09:35:14)    (01)

Peter writes:    (02)

The spec is clear, yes…. but an object is not the same thing as the 
address of the object – (according to the RFC, I *am* my address): the 
object needs identity as much as the address of it does. That is where I 
feel this axiom of the W3C falls down…
"    (03)

Clearly there is a problem here.  But we should be careful to 
distinguish confusedly designed frameworks from confused documentation 
of well-designed ones.    (04)

While RDF specifications, for example, are relatively clear and sound, 
the RDF primer provides an abundance of examples such as:    (05)

ex:index.html  exterms:creation-date  "August 16, 1999" .
ex:index.html  dc:language            "en" .    (06)

supposed to state that "August 16, 1999" is the creation date of a page 
and "en" is he language of a page, while both are literal strings and 
*not* identifiers for a date and a language, respectively.  But from 
this apparently confused example one should not infer that RDF itself is 
confused (in this respect).    (07)

(This is not to say that RDF is not confused.)    (08)

Wacek    (09)

Wacek Kusnierczyk    (010)

Department of Information and Computer Science (IDI)
Norwegian University of Science and Technology (NTNU)
Sem Saelandsv. 7-9
7027 Trondheim
Norway    (011)

tel.   0047 73591875
fax    0047 73594466
------------------------------------------------------    (012)

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