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Re: OWL 2.0 ...

From: Ian Horrocks <horrocks@cs.man.ac.uk>
Date: Tue, 12 Apr 2005 12:53:41 +0100
Message-Id: <e946016b6ca65ebb0fd1553976ab51da@cs.man.ac.uk>
Cc: public-owl-dev@w3.org
To: Jim Hendler <hendler@cs.umd.edu>


Regarding decidable extensions, we are working on extending 
expressiveness w.r.t. properties (e.g., supporting complex property 
expressions), datatypes and predicates (e.g., user defined datatypes, 
and comparisons of multiple data values), and query languages. Of 
course we would also support a qualified cardinality constraint 
extension, but this doesn't require any extension in the underlying 
theory (or even implementations in many cases). Regarding undecidable 
extensions, we are working on rules languages such as SWRL.


On 7 Apr 2005, at 14:14, Jim Hendler wrote:

>  (NOTE: This is a private message, it has no link to the Sem Web 
> activity, or anything else -- I write this wearing my professor hat!)
> In recent days I've been attending a lot of meetings where I have been 
> approached by people talking about not just the limitations of the 
> current OWL (something I've been hearing about for a long time :-)) 
> but actually talking about proposed technical solutions.   I think it 
> would be good to start to collect some of these and to think a bit 
> about those things that we might want to see go into some future OWL 
> version
>   There's a wide variety of these things going from simple extensions 
> to OWL (such as adding qualified restrictions, having an 
> owl:allDisjoint , etc.)  to adding some standard ways of doing common 
> things in other KR langauges  (part-whole, bounded transitivity, 
> probability models)  or going beyond to new concepts in Sem Web (new 
> models of partial import, named ontology segments, etc.)
>   I'd like to hear what people are working on, or what people need - 
> this way we'll have these ideas on record for the eventual next 
> generation of OWL technology.
>   -Jim H,.
> -- 
> Professor James Hendler			  Director, Semantic Web and Agent 
> Technologies
> Maryland Information and Network Dynamics Lab.	  301-405-2696
> 8400 Baltimore Ave, Suite 200			  301-314-9734 (Fax)
> College Park, MD 20742	 		  http://www.cs.umd.edu/users/hendler
Received on Tuesday, 12 April 2005 11:53:54 UTC

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