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draft response for LC comment 20 JDB1

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Tue, 03 Mar 2009 20:28:41 -0500 (EST)
Message-Id: <20090303.202841.12034087.pfps@research.bell-labs.com>
To: public-owl-wg@w3.org
[Draft Response for LC Comment 20:] JDB1

Dear Jos,

Thank you for your message
  <http://lists.w3.org/Archives/Public/public-owl-comments/2009Jan/0022.html>
on the OWL 2 Web Ontology Language last call drafts.
 
You are correct that OWL 2 RL does not need the intersection of
datatypes to be empty or infinite.  Accordingly the datatypes in OWL 2
RL have been adjusted to include all the OWL datatypes that are
restrictions of xsd:decimal and xsd:string and also xsd:boolean.

In response to another comment 
  <http://lists.w3.org/Archives/Public/public-owl-wg/2009Jan/0083.html>
on the difficulty of implementing datatypes in rules systems, 
owl:real and owl:rational have been removed from OWL 2 RL.
This possibility was mentioned in Feature At Risk #2.

The diffs for these changes can be found at
http://www.w3.org/2007/OWL/wiki/index.php?title=Profiles&diff=18687&oldid=18109

Implementation difficulties have resulted in xsd:float and xsd:double 
remaining out of OWL 2 RL.  If these difficulties can be overcome the
two datatypes may be included in OWL 2 RL.  If changes occurs the
working
group will notify you.

Please acknowledge receipt of this email to
<mailto:public-owl-comments@w3.org> (replying to this email should
suffice). In your acknowledgment please let us know whether or not you
are satisfied with the working group's response to your comment. 

Regards,
Peter F. Patel-Schneider
on behalf of the W3C OWL Working Group 
Received on Wednesday, 4 March 2009 01:28:30 GMT

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