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Re: DCAT and VoID

From: Fadi Maali <fadi.maali@deri.org>
Date: Fri, 27 Apr 2012 12:05:30 +0100
Cc: public-gld-comments@w3.org, Michael Hausenblas <michael.hausenblas@deri.org>
Message-Id: <1303DD75-493C-43A1-8ED6-32EF8456738E@deri.org>
To: Alasdair J G Gray <A.Gray@cs.man.ac.uk>
Hi,

I believe that using them together is beneficial especially when an existing dataset available for example in CSV is converted to RDF. In this scenario I usually describe the resulting RDF dataset in VoiD and the original dataset in DCAT while linking them together using dct:source something like:
:void-dataset dct:source :dcat-dataset.
:dcat-dataset dcat:distribution :dcat-dist.
:dcat-dist dcat:accessURL <url-to-the-csv-file>

using this representation, the converted RDF representation is linked to its source and therefore can be checked and validated. 
For example have a look at: http://vmsgov03.deri.ie:8080/data-cube-searcher/index.html?query=howth%20primary%20schools
notice the link to the original CSV file that is enabled by the link from void to dcat datasets.

Hope this helps!

Regards,
Fadi Maali

On 27 Apr 2012, at 11:59, Michael Hausenblas wrote:

> Alasdair,
> 
>> Are there plans on combining the specifications? 
> 
> No, as they target different types of data. DCAT is for describing non-RDF datasets, VoID for RDF datasets.
> 
>> Is there a best practice on how to use them together?
> 
> DCAT/VoID alignment and best practices are certainly necessary and should/will be done (heads-up: we plan this for an upcoming release of VoID, cf. the long-standing issue on our tracker [1]).
> 
> 
> Cheers,
> 	   Michael
> 
> [1] http://code.google.com/p/void-impl/issues/detail?id=63
> 
> --
> Dr. Michael Hausenblas, Research Fellow
> DERI - Digital Enterprise Research Institute
> NUIG - National University of Ireland, Galway
> Ireland, Europe
> Tel.: +353 91 495730
> WebID: http://sw-app.org/mic.xhtml#i
> 
> On 24 Apr 2012, at 18:20, Alasdair J G Gray wrote:
> 
>> Hi,
>> 
>> I have been looking at DCAT and VoID for describing datasets. There seems to be a large amount of overlap between the two specifications. Are there plans on combining the specifications? Is there a best practice on how to use them together?
>> 
>> Alasdair
>> 
>> Dr Alasdair J G Gray
>> Research Associate
>> Alasdair.Gray@manchester.ac..uk
>> +44 161 275 0145
>> 
>> Room 1.17
>> Kilburn Building
>> School of Computer Science
>> University of Manchester
>> Oxford Road
>> Manchester
>> M13 9PL, UK
>> 
>> Please consider the environment before printing this email.
>> 
> 
> 
Received on Friday, 27 April 2012 11:06:04 GMT

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