AW: Dataset for Virtuoso at lod.openlinksw.com

Hi Kingsley,

I don't see how I could get provenance information from a SPARQL query. There are triples describing some void:Datasets, but none of these seems to be the openlinksw.com domain  (see query below) , and the result seems very incomplete.

Cheers, Joachim


select ?domain (count(?domain) as ?count) (sample(?strippedDS) as ?sampleDS)
where {
  ?ds a void:Dataset .
  bind (strafter (str(?ds), '//') as ?strippedDS)
  bind (strbefore(?strippedDS, '/') as ?domain)
}
group by ?domain
order by desc(?count)


Von: Kingsley Idehen [mailto:kidehen@openlinksw.com]
Gesendet: Mittwoch, 27. Juni 2018 18:01
An: public-lod@w3.org
Betreff: Re: Dataset for Virtuoso at lod.openlinksw.com

On 6/26/18 12:27 PM, Neubert, Joachim wrote:
I'm currently trying to figure out the usage of Dublin Core metadata terms in LOD. One great resource for that is Openlink's public SPARQL endpoint. However, it seems not possible to figure out which datasets where aggregated for that endpoint, or at what time. The announced VoiD graph (http://lod.openlinksw.com/void/Dataset) gives a 404.

Can anybody help with this? Cheers, Joachim



Hi Joachim,

Why not reconstruct from a SPARQL query?

[1] https://tinyurl.com/ybzcef94 -- offers an initial ontology description page to get you going

--

Regards,



Kingsley Idehen

Founder & CEO

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