Hi Thomas

Thank you - But I simply cannot find this data in the latest-truths.nt-file.

F.ex. the following grep command returns nothing:

grep ^<https://en%5C.wikipedia%5C.org latest-truthy-BETA.nt

Also when I query my local triplestore installed with the RDF-data I cannot find this relation.

Best, Rune

Den 22. nov. 2017 kl. 16.40 skrev Thomas Pellissier Tanon thomas@pellissier-tanon.fr:

Hello Rune,

They are encoded in the RDF dumps of Wikidata using the http://schema.org/about http://schema.org/about property e.g.:

<https://en.wikipedia.org/wiki/Douglas_Adams https://en.wikipedia.org/wiki/Douglas_Adams> schema:about <http://www.wikidata.org/entity/Q42 http://www.wikidata.org/entity/Q42>

Best,

Thomas

Le mer. 22 nov. 2017 à 16:21, Rune Stilling <subs@rdfined.dk mailto:subs@rdfined.dk> a écrit : Hi list

Where can one find the mapping between Wikidata and Wikipedia. I can see the links online in both Wikidata and Wikipedia, but I cannot find the links in the RDF-dump f.ex. of Wikidata, nor in the XML-dump of Wikipedia.

With regards, Rune Stilling

---

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I neither can find the triple. I have searched with

$ pv wikidata-20170613-truthy-BETA.nt.bz2 | bzcat | grep "https://en.wikipedia.org/wiki/Wikidata" 5.12GiB 0:36:11 [2.41MiB/s] [====================================================================================================>] 100%

and nothing comes up.

The truthy dumps seem not have have that particular type of triple, while it is available in the full triple format, e.g., at https://www.wikidata.org/entity/Q2013.nt

I think you need to download the big one: https://dumps.wikimedia.org/wikidatawiki/entities/latest-all.ttl.gz

The "all" one has the "schema:about" triple. For instance:

https://en.wikipedia.org/wiki/Northern_Ireland a schema:Article ; schema:about wd:Q26 ; schema:inLanguage "en" ; schema:isPartOf https://en.wikipedia.org/ ; schema:name "Northern Ireland"@en .

--- Finn Årup Nielsen http://people.compute.dtu.dk/faan/

On 11/23/2017 08:46 AM, Rune Stilling wrote:

Hi Thomas

Thank you - But I simply cannot find this data in the latest-truths.nt-file.

F.ex. the following grep command returns nothing:

grep ^<https://en%5C.wikipedia%5C.org https://en%5C.wikipedia%5C.org latest-truthy-BETA.nt

Also when I query my local triplestore installed with the RDF-data I cannot find this relation.

Best, Rune

...

Den 22. nov. 2017 kl. 16.40 skrev Thomas Pellissier Tanon <thomas@pellissier-tanon.fr mailto:thomas@pellissier-tanon.fr>:

Hello Rune,

They are encoded in the RDF dumps of Wikidata using the http://schema.org/about property e.g.:

<https://en.wikipedia.org/wiki/Douglas_Adams https://en.wikipedia.org/wiki/Douglas_Adams> schema:about http://www.wikidata.org/entity/Q42

Best,

Thomas

Le mer. 22 nov. 2017 à 16:21, Rune Stilling <subs@rdfined.dk mailto:subs@rdfined.dk> a écrit :

Hi list

Where can one find the mapping between Wikidata and Wikipedia. I
can see the links online in both Wikidata and Wikipedia, but I
cannot find the links in the RDF-dump f.ex. of Wikidata, nor in
the XML-dump of Wikipedia.

With regards,
Rune Stilling


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Wikidata@lists.wikimedia.org <mailto:Wikidata@lists.wikimedia.org>
https://lists.wikimedia.org/mailman/listinfo/wikidata

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Rune Stilling, 11/12/2017 17:55:

Another question. What happens if a Wikipedia title/url changes. How do you handle this? Do you update Wikidata manually (the link from Wikidata to Wikipedia)?

If the page is renamed, the same action also updates the linked Wikidata entity, so there is no additional work for editors most of the time.

I don't know what you're supposed to do as a data consumer: if you produce links and want to ensure they keep working, then I guess you should convert to page IDs and use a link of the form https://en.wikipedia.org/?curid=8091

Federico