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Re: three kinds of dataset

From: Antoine Zimmermann <antoine.zimmermann@emse.fr>
Date: Tue, 06 Mar 2012 19:10:36 +0100
Message-ID: <4F56531C.10407@emse.fr>
To: "Peter F. Patel-Schneider" <pfpschneider@gmail.com>
CC: public-rdf-wg@w3.org
Why not indeed?  This was my original idea, modulo a little improper 
formulation (you can see the previous version in the wiki) but 1) Pat 
was very much against this formulation, and 2) the current formulation 
allows a dataset-interpretation to assign a "local" interpretation to a 
potentially infinite set of terms. This is particularly useful for 
reasoning with annotated triples (UC 6.2 in 
http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs-UC#.28B_priority.29_Reasoning_over_annotations).


Le 06/03/2012 18:52, Peter F. Patel-Schneider a écrit :
> From: Antoine Zimmermann<antoine.zimmermann@emse.fr>
> Subject: Re: three kinds of dataset
>>
>> http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs/RDF-Datasets-Proposal#Semantics
>>
>> What precedes this in the wiki is Richard's proposal, which concerns the
>> syntax. Richard does not necessarily endorse the semantics.
>>
>> Le 06/03/2012 17:49, Peter F. Patel-Schneider a écrit :
>>> By the way, where is Antoine's proposal?
>>>
>>> peter
>
> Why not just say that an RDF/RDFS/... dataset interpretation of
> 	D = (G, {<n1,G1>, ...,<nk,Gk>})
> is a structure
> 	I = (I, {<m1,I1>, ...,<mh,Ih>})
> where I is an RDF/RDFS/... interpretation of G
> and for each 1<=i<=k there is a j, 1<=j<=h such that mj=ni
> and Ij is an RDF/RDFS/... interpretation of Gi
> (could also require ni distinct and h=k)
>
> Then	D = (G, {<n1,G1>, ...,<nk,Gk>})
> entails D' = (G', {<n'1,G'1>, ...,<n'k',G'k'>})
> just when every RDF/RDFS/... datatset interpretation of D
> is also an RDF/RDFS/... datatset interpretation of G'
>
> peter


-- 
Antoine Zimmermann
ISCOD / LSTI - Institut Henri Fayol
École Nationale Supérieure des Mines de Saint-Étienne
158 cours Fauriel
42023 Saint-Étienne Cedex 2
France
Tél:+33(0)4 77 42 83 36
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http://zimmer.aprilfoolsreview.com/
Received on Tuesday, 6 March 2012 18:10:56 GMT

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