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Re: sub-datasets ...

From: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>
Date: Wed, 19 Oct 2011 10:17:39 +0200
Message-ID: <4E9E87A3.3090103@liris.cnrs.fr>
To: Jeremy Carroll <jeremy@topquadrant.com>
CC: RDF Working Group WG <public-rdf-wg@w3.org>
Is that just me, or does this use case relate to the one from the BBC
[1] ? More precisely, aren't the notion of subdataset and the notion of
slice somewhat aligned?

  pa

[1]
http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs-UC#.28A_PRIORITY.29_Slicing_datasets_according_to_multiple_dimensions

On 10/14/2011 04:06 AM, Jeremy Carroll wrote:
> 
> TopQuadrant code routinely queries datasets that are provided by other 
> vendors; hence we have an interest in the dataset abstractions that are 
> provided in the standard.
> 
> A particular area of interest for TopQuadrant is that we often want to 
> have a simple dataset algebra, where given a dataset with some set of 
> graph names N = { n1, n2, .... nk }, we may want to run a query against 
> a subdatset M of N, consisting of only some of the ni, e.g. M = { n3, n4 }.
> Given such a capability then, at least over the powerset of N, we can 
> provide the usual set theoretic operators of union and intersection to 
> implement a change of application focus by considering a different 
> subdataset.
> 
> I am wondering what is the best way to add this issue to the mix here. I 
> could write up a use case: would that be helpful?
> 
> Jeremy
> 
> 
> 
Received on Wednesday, 19 October 2011 08:18:22 GMT

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