Hi Sandra,
For part of the artworks on Danish museums I used the standard SPARQL
service (https://query.wikidata.org). I my case I only downloaded data
for some hundred artworks, - as far as I recall, so I do not know how
stable the approach is for 30,000 artworks.
You will see some example on my Wikidata user page:
https://www.wikidata.org/wiki/User:Fnielsen
The Python 'sparql' and 'pandas' package allows for easy scripting. The
example does not use RDF but get the data into a Pandas DataFrame.
For 'or' between all the museums you want I believe you can use the UNION:
SELECT ?work ?workLabel WHERE {
{ ?work wdt:P195 wd:Q1471477 . }
UNION { ?work wdt:P195 wd:Q2365880 . }
UNION { ?work wdt:P195 wd:Q1948674 . }
UNION { ?work wdt:P195 wd:Q1928672 . }
UNION { ?work wdt:P195 wd:Q1540707 . }
UNION { ?work wdt:P195 wd:Q1573755 . }
UNION { ?work wdt:P195 wd:Q2098074 . }
SERVICE wikibase:label { bd:serviceParam wikibase:language "nl,en" . }
}
https://query.wikidata.org has a download results for CSV or JSON.
Try this one: https://tinyurl.com/p8ghgnx and press execute and
download CSV.
best
Finn
On 10/26/2015 05:11 PM, Sandra Fauconnier wrote:
Hi all,
For this Flemish museums on Wikidata project
<https://www.wikidata.org/wiki/Wikidata:Flemish_art_collections,_Wikidata_and_Linked_Open_Data>
(
… we hope to import some 30,000 Flemish artworks in the upcoming months
:-) … ) I and the rest of the project team are trying to find out if and
how we’ll be able to retrieve RDF from Wikidata - one RDF export/file
for all concerned items at once.
So this is not RDF for a single item (like this
<https://www.wikidata.org/wiki/Special:EntityData/Q21012032.rdf>) and
also not a RDF dump of all of Wikidata like mentioned here
<https://www.wikidata.org/wiki/Wikidata:Data_access#Access_to_dumps>. It
would be an RDF file corresponding to the results of this WDQ query
<http://tools.wmflabs.org/autolist/autolist1.html?q=CLAIM%5B195:1471477%5D%20OR%20CLAIM%5B195:2365880%5D%20OR%20CLAIM%5B195:1948674%5D%20OR%20CLAIM%5B195:1928672%5D%20OR%20CLAIM%5B195:1540707%5D%20OR%20CLAIM%5B195:1573755%5D%20OR%20CLAIM%5B195:2098074%5D>
(which
should produce more than 30,000 items in a few months!).
Any tips on how to achieve this? Wikidata Toolkit? But how/what to do?
We are not programmers/developers but we do have some budget to hire
someone to build us something, so pointers to a (Belgian??) developer
who could help would also be very welcome.
The project raises quite a few questions, by the way, so I might come
back with more :-)
Many thanks in advance! Sandra (User:Spinster)
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Finn Årup Nielsen
http://people.compute.dtu.dk/faan/
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