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Re: [LC Response] To Zhe Wu Re: OWL 2 LC Comments - Addendum

From: Zhe Wu <alan.wu@oracle.com>
Date: Wed, 18 Mar 2009 17:29:07 -0400
Message-ID: <49C167A3.1000104@oracle.com>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
CC: alanzwu@yahoo.com, public-owl-wg@w3.org
Dear Peter,

Thanks for the response and Oracle is happy with it.

Cheers,

Zhe

Peter F. Patel-Schneider wrote:
> Dear Zhe,
>
> This is an addendum to our response to your message
> <http://lists.w3.org/Archives/Public/public-owl-wg/2009Jan/0083.html>
> on the OWL 2 Web Ontology Language last call drafts.
>
> In our previous response 
> <http://lists.w3.org/Archives/Public/public-owl-wg/2009Mar/0047.html>
> we stated
>
>   The working group notes that Oracle has also brought up concerns with
>   the treatment of xsd:float and xsd:double.  These two datatypes are
>   not currently part of OWL 2 RL.  If this situation changes the working
>   group will communicate with you.
>
> This situation has changed and now xsd:float and xsd:double are part of
> OWL 2 RL so we are duly notifying you.
>
> Please acknowledge receipt of this email to
> <mailto:public-owl-wg@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 
>
>
> From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
> Subject: [LC Response] To Zhe Wu Re: OWL 2 LC Comments
> Date: Wed, 04 Mar 2009 16:38:17 -0500 (EST)
>
>   
>> Dear Zhe,
>>
>> Thank you for your message
>> <http://lists.w3.org/Archives/Public/public-owl-wg/2009Jan/0083.html>
>> on the OWL 2 Web Ontology Language last call drafts.
>>  
>> Your message contains multiple sections, affecting more than one
>> document, and will thus generate multiple replies.  This response
>> is for sections 4 and 8 about the datatypes in OWL 2 RL.
>>
>> We have adjusted the datatypes of OWL 2 RL to include those XML Schema
>> datatypes that are derived from xsd:string and xsd:integer, including
>> xsd:positiveInteger, plus xsd:boolean.  These were excluded from OWL 2
>> RL because of a mistaken analogy with OWL 2 EL and OWL 2 QL, namely that
>> intersection of value spaces must be either empty or infinite to
>> maintain the desired properties of the profile.  It turns out that this
>> is not needed in OWL 2 RL to obtain its desired computational
>> properties.  As any OWL 2 RL tool has to process xsd: string and
>> xsd:integer, the added implementation burden to support these datatypes
>> is negligible.
>>
>> The situation with owl:rational and owl:real is different.  The working
>> group has received complaints that implementing these datatypes may
>> require significant effort on top of a rule reasoner.  Therefore
>> owl:rational and owl:real 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>
>>
>> The working group notes that Oracle has also brought up concerns with
>> the treatment of xsd:float and xsd:double.  These two datatypes are not
>> currently part of OWL 2 RL.   If this situation changes the working
>> group will communicate with you.
>>
>> Please acknowledge receipt of this email to
>> <mailto:public-owl-wg@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, 18 March 2009 21:29:11 GMT

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