Hi Denny,
* the old system was like this:
we load from here: http://downloads.dbpedia.org/2016-10/core/
metadata is in
http://downloads.dbpedia.org/2016-10/core/2016-10_dataid_core.ttl with
void:sparqlEndpoint <http://dbpedia.org/sparql> ;
* the new system is here: https://databus.dbpedia.org/dbpedia
There are 6 new releases and the metadata is in the endpoint
https://databus.dbpedia.org/repo/sparql
Once the collection saving feature is finished, we will build a
collection of datasets on the bus, which will then be loaded. It is
basically a sparql query retrieving the downloadurls like this:
http://dev.dbpedia.org/Data#example-application-virtuoso-docker
So we keep better usage tracing and also better provenance tracking,
i.e. we hope that the wikidata/wikipedia dumps will be on the databus,
so we can set prov-o:wasDerivedFrom links.
By the way there is a new fusion dataset:
https://svn.aksw.org/papers/2019/ISWC_FlexiFusion/public.pdf
So people don need to merge Wikidata and DBpedia manually any more. It
is prefused.
-- Sebastian
On 31.05.19 21:59, Denny Vrandečić wrote:
Thank you for the answer!
I don't see how the query solution page that you linked indicates that
this is the English Wikipedia extraction. Where does it say that? How
can I tell? I am trying to understand, thanks.
Also, when I download the set of English extractions from here,
http://downloads.dbpedia.org/2016-10/core-i18n/en/
particularly this one,
http://downloads.dbpedia.org/2016-10/core-i18n/en/mappingbased_objects_en.ttl.bz2
it is only about 17,467 people with parents, not 20,120, so that
dataset seems out of sync with the one in the SPARQL endpoint.
I am curious where do you load the dataset from?
Thank you!
On Fri, May 31, 2019 at 11:49 AM Kingsley Idehen
<kide...@openlinksw.com <mailto:kide...@openlinksw.com>> wrote:
On 5/31/19 2:23 PM, Denny Vrandečić wrote:
When I query the dbpedia.org/sparql <http://dbpedia.org/sparql>
endpoint asking for "how many people with a parent do you know?",
i.e. select (count (distinct ?p) as ?c) where { ?s dbo:parent ?o
}, I get as the answer 20,120.
Where among the Downloads on wiki.dbpedia.org/downloads-2016-10
<http://wiki.dbpedia.org/downloads-2016-10> can I find the
dataset that the SPARQL endpoint actually serves? Is it the
English Wikipedia-based "Mappingbased" one? Or is t the "Infobox
Properties Mapped"?
Cheers,
Denny
The query solution page
<http://dbpedia.org/sparql?default-graph-uri=&query=prefix+dbo%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E+%0D%0A%0D%0Aselect+%3Fg+%28count+%28distinct+%3Fs%29+as+%3Fc%29%0D%0Awhere+%7B+%0D%0A+++++++%0D%0A+++++++++graph+%3Fg+%7B%3Fs+dbo%3Aparent+%3Fo.%7D%0D%0A%0D%0A+++++%7D%0D%0Agroup+by+%3Fg&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on&run=+Run+Query+>
indicates this is the English Wikipedia dataset. That's what we've
always loaded into the Virtuoso instance from which DBpedia Linked
Data and its associated SPARQL endpoint are deployed.
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software
Home Page:http://www.openlinksw.com
Community Support:https://community.openlinksw.com
Weblogs (Blogs):
Company Blog:https://medium.com/openlink-software-blog
Virtuoso Blog:https://medium.com/virtuoso-blog
Data Access Drivers
Blog:https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers
Personal Weblogs (Blogs):
Medium Blog:https://medium.com/@kidehen
Legacy Blogs:http://www.openlinksw.com/blog/~kidehen/
http://kidehen.blogspot.com
Profile Pages:
Pinterest:https://www.pinterest.com/kidehen/
Quora:https://www.quora.com/profile/Kingsley-Uyi-Idehen
Twitter:https://twitter.com/kidehen
Google+:https://plus.google.com/+KingsleyIdehen/about
LinkedIn:http://www.linkedin.com/in/kidehen
Web Identities (WebID):
Personal:http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
:http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
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--
All the best,
Sebastian Hellmann
Director of Knowledge Integration and Linked Data Technologies (KILT)
Competence Center
at the Institute for Applied Informatics (InfAI) at Leipzig University
Executive Director of the DBpedia Association
Projects: http://dbpedia.org, http://nlp2rdf.org,
http://linguistics.okfn.org, https://www.w3.org/community/ld4lt
<http://www.w3.org/community/ld4lt>
Homepage: http://aksw.org/SebastianHellmann
Research Group: http://aksw.org
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