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Re: One comment on RDF mapping [related to ISSUE 67 and ISSUE 81]

From: Alan Wu <alan.wu@oracle.com>
Date: Thu, 12 Jun 2008 21:49:06 -0400
Message-ID: <4851D212.2060509@oracle.com>
To: Bijan Parsia <bparsia@cs.man.ac.uk>
CC: OWL Working Group WG <public-owl-wg@w3.org>

Bijan,

Sorry for the delayed response.

Seems that we don't quite agree on the how much additional cost by 
leaving axiom triples out.
I am glad to see at least we agree that it requires a more 
sophisticated  implementation. :) 
Can I  ask the WG then to simply the mapping so that unsophisticated 
developers like me
have an easier time implementing OWL2 in a commercial product. I believe 
that is a very reasonable
request.

Cheers,

Zhe

Bijan Parsia wrote:
>
> Just to be clear, I'm not advocating putting in the triple or leaving 
> it out at this point. There are reasons both ways (and we can't always 
> get around leaving it out, as with negative property assertions). I 
> don't think the performance case is very strong against it, however, 
> certainly  not conclusive *even on its own terms* (i.e., we have to 
> make unrealistic assumptions about likely data *and* ignore the 
> potentially significant bloat of the data *and* neglect likely use 
> patterns). There's no question, of course, that it requires a more 
> sophisticated implementation.
>
> I'll note further that allowing reification in user land (i.e., not 
> just in syntax) will bring similar issues.
>
> Cheers,
> Bijan.
>
>
Received on Friday, 13 June 2008 01:51:29 GMT

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