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Re: [ontolog-forum] Current Semantic Web Layer Cake

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Barker, Sean (UK)" <Sean.Barker@xxxxxxxxxxxxxx>
Date: Mon, 6 Aug 2007 10:03:50 +0100
Message-id: <E18F7C3C090D5D40A854F1D080A84CA43F377B@xxxxxxxxxxxxxxxxxxxxxx>

We suffer from identical syntax and allegedly identical semantics all
the time in data exchange (ISO 10303), so I don't see why logic should
be any difference. Its only when we ground the semantics of the data in
the behaviour of the application/organization that we have any hope of
success, and then only after a long and painful process of testing. Even
in the relatively well specified area of geometry, it has taken many
years of effort and continuous testing to get a reasonably reliable
exchange (though not 100%), and there is still a considerable amount to
do.    (01)

Sean Barker
Bristol, UK    (02)

This mail is publicly posted to a distribution list as part of a process
of public discussion, any automatically generated statements to the
contrary non-withstanding. It is the opinion of the author, and does not
represent an official company view.    (03)


> -----Original Message-----
> From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx 
> [mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of 
> Kathryn Blackmond Laskey
> Sent: 03 August 2007 19:21
> To: [ontolog-forum] ; Valentin Zacharias
> Cc: Juan Sequeda; SW-forum list; [ontolog-forum]
> Subject: Re: [ontolog-forum] Current Semantic Web Layer Cake
> 
> 
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> 
> >...I could accept the idea of a common notation for if-then 
> rules, but 
> >with two very clearly specified options for the semantics:
> >
> >   1. A purely classical FOL that is compatible with CL and its
> >      subsets, such as Z, RDF(S), and OWL.
> >
> >   2. A negation-as-failure semantics that is compatible with the
> >      ISO standard for Prolog.
> >
> >If you want that, then say so.  But make it very, very clear 
> that the 
> >two semantics are *not* compatible -- and that no attempt to 
> exchange 
> >rules between the two versions of semantics should be done, except 
> >under stringently controlled conditions.
> 
> The idea of a single syntax with two different incompatible 
> semantics scares me.
> 
> K
>  
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>     (04)

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