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Re: Querying different SPARQL endpoints

From: Hugh Glaser <hg@ecs.soton.ac.uk>
Date: Wed, 19 Dec 2012 19:54:08 +0000
To: Oscar Corcho <ocorcho@fi.upm.es>
CC: Vishal Sinha <vishal.sinha777@yahoo.com>, "public-lod@w3.org Data" <public-lod@w3.org>, Daniel Vila <dvila@fi.upm.es>, Asunción Gómez Pérez <asun@fi.upm.es>
Message-ID: <387E72E216DF1247A2F8ED4819C93BA71E3C0E38@UOS-MSG00041-SI.soton.ac.uk>
Respect!

On 19 Dec 2012, at 19:42, Oscar Corcho <ocorcho@fi.upm.es>
 wrote:

> Hi all,
> 
> As one of the persons in charge of the dataset that Vishal has pointed out
> to, and responding to Hugh's comment, you will actually find a description
> of this specific dataset at: http://datahub.io/dataset/culturalinkeddata
> 
> In fact, according to our own methodological guidelines for generating
> Linked Data (that is, eating our own dog food), we always recommend
> generating, as commented by Hugh, the sitemap.xml and a void description
> for all our datasets, registering them to the CKAN registry.
> 
> The data that is available in that SPARQL endpoint is now migrated to
> http://datos.bne.es/ (it is data from the Spanish National Library), and
> the void description is at http://datos.bne.es/void/bne.ttl
> 
> Regards,
> 	Oscar
> 
> 
> -- 
> 
> Oscar Corcho
> Ontology Engineering Group (OEG)
> Departamento de Inteligencia Artificial
> Facultad de Informática
> Campus de Montegancedo s/n
> Boadilla del Monte-28660 Madrid, España
> Tel. (+34) 91 336 66 05
> Fax  (+34) 91 352 48 19
> 
> 
> 
> 
> 
> 
> El 19/12/12 20:19, "Hugh Glaser" <hg@ecs.soton.ac.uk> escribió:
> 
>> You can start querying for stuff, but I am guessing that what you mean is
>> how can you find out what is in the store without starting to query.
>> 
>> Well if you are lucky:
>> There is a sitemap.xml, which points you at a voiD document that tells
>> you some of what you want to know, such as what the topics of the dataset
>> are.
>> For example, our http://acm.rkbexplorer.com/ has
>> http://acm.rkbexplorer.com/sitemap.xml which points at
>> http://acm.rkbexplorer.com/models/void.ttl
>> Or you might be able to find the voiD document some other way.
>> 
>> I'm afraid you are unlikely to be lucky, though - not many people publish
>> voiD data.
>> (A while ago we tried to harvest it, and you will find the results at
>> http://void.rkbexplorer.com)
>> 
>> Also, looking in the catalogue at http://datahub.io/ may provide
>> information you can use.
>> 
>> On 19 Dec 2012, at 18:28, Vishal Sinha <vishal.sinha777@yahoo.com>
>> wrote:
>> 
>>> There are many public SPARQL endpoints available.
>>> For example the cultural linked data:
>>> http://cultura.linkeddata.es/sparql
>>> 
>>> How can I know what type of information is available in this dataset.
>>> Based on what assumption I can query it?
>>> Do I need to know any structure beforehand?
>>> 
>>> Viashal
>>> 
>> 
>> 
> 
> 
Received on Wednesday, 19 December 2012 19:56:40 UTC

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