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Re: OWL DL in RDF

From: Jeremy Carroll <jjc@hpl.hp.com>
Date: Wed, 11 Jun 2003 10:20:41 +0300
To: www-webont-wg@w3.org
Message-Id: <200306111020.41874.jjc@hpl.hp.com>


Review of
http://wonderweb.man.ac.uk/owl/rdf.shtml
dated
05/30/03

Scope of review: purely technical - I believe the WG is already convinced of 
the stylistic merits of this work.

Footnote [3]: suggest add:
--
x rdf:type rdfs:Class
x rdf:type owl:Class
x rdf:type owl:Restricition
--
as one of the possibilities


Restrictions
==========

Suggest s/involving/with predicate/
(leaving 'involved' to indicate the object of a triple)

"It is not the subject of any other triples"
Unfortunately false, and hardish to fix.
1) see footnote 3 fix
2) it may be the subject of many owl:equivalentClass or owl:disjointWith 
triples.

Class Axioms
===========
weak suggest s/|/\nor\n/

Property Axioms
=============
owl:DatatypeProperty can have an rdfs:domain

rdfs:range suggest 
s/specifying a data range/specifying a data range with type owl:DataRange/
also note rdfs:Literal can be specified as a range

Boolean Class Expressions
======================

suggest adding at end,
if the owl:Class is unnamed then only one such expression is permitted.
Named classes can have any number of these expressions.


Avoid Structure Sharing
===================

s/AS&S/S&AS/

Avoid Orphan bnodes
==================

unnamed individuals are forgotten

suggest

"In general, bnodes occurring in the graph either represent unnamed 
individuals or should "


Omission
========

owl:equivalentClass and owl:disjointClass suggest waiting to see the B1 B2 
discussion before drafting

Jeremy
Received on Wednesday, 11 June 2003 04:20:41 GMT

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