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Re: Review of Entailment Regimes (Action-317)

From: Ivan Herman <ivan@w3.org>
Date: Wed, 6 Oct 2010 10:13:19 +0200
Cc: "Birte Glimm" <birte.glimm@comlab.ox.ac.uk>, "Olivier Corby" <Olivier.Corby@sophia.inria.fr>, "SPARQL Working Group" <public-rdf-dawg@w3.org>
Message-Id: <65261F24-F331-4535-994D-BC9B6B12AD5F@w3.org>
To: Chimezie Ogbuji <ogbujic@ccf.org>
Chime,

thanks, that is helpful for the readers I believe.

Just editorial things: for readers who have not seen the RIF syntax before, it may be useful to

- put the two conditions in separate lines (and RDF person may not realize that there is no separator, ie, that ?X [ ex:isChildOf -> ?Y] ?Y # ex:Male are actually two conditions
- do not use the '#' shortcut for typing; it is not understandable to outsiders. 

Ie, I would propose to have

Group ( 
    Forall ?X ?Y ( 
        ?Y [ ex:isFatherOf -> ?X ] :- And( ?X [ ex:isChildOf -> ?Y] 
                                           ?Y rdf:type ex:Male 
                                      )  
    )
)            

Thanks!

Ivan


On Oct 5, 2010, at 20:41 , Chimezie Ogbuji wrote:

> Birte, Ivan. See response inline below
> 
> On 10/2/10 2:01 PM, "Birte Glimm" <birte.glimm@comlab.ox.ac.uk> wrote:
>>> ------
>>> 
>>> There is a sudden jump in the complexity of the examples when getting to the
>>> RIF core. I wonder whether it is possible to add a simpler example here...
>> 
>> not done, I leave this up to Chime
> 
> I added a simple example right after [1] the definition of "7.2 (Simple) RIF
> Core Entailment Regime".  I forgot to mention that I wanted to make this
> small change prior to publication in today's meeting, sorry about that.  But
> the change was quite small so I figure no harm in adding it.
> 
> [1] http://www.w3.org/2009/sparql/docs/entailment/xmlspec.xml#id6176595
> 
> -- Chime
> 
> 
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----
Ivan Herman, W3C Semantic Web Activity Lead
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Received on Wednesday, 6 October 2010 08:13:36 GMT

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