Wikidata:WikidataCon 2017/Notes/Wikidata painting catalog workshop
Title: Wikidata painting catalog workshop
Speaker(s)[edit]
Name or username: Jane Darnell
Useful links:
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings
https://tools.wmflabs.org/listeria/
Abstract[edit]
Many top paintings in the world are included on Wikipedia in some form or other: as an article illustration, mentioned indirectly as a museum highlight or visitor attraction, or as an achievement in a painter's career. This workshop demonstrates how these are added to Wikidata and invites you to help work to clean up the data on these paintings by connecting them to painting catalog items. Painting catalogs are key players in sourcing statements about these paintings. By playing with catalog data, you can learn more about data modelling and the differences between Wikipedia/Commons/Wikidata presentation of paintings.
Slide one[edit]
Discussion of mutilated "portrait of a family" picnic-style painting by Frans Hals, now in two collections
Q17627383 and Q17627385
Modelling such cases is difficult (and note that the first painting also has a baby added later by Salomon de Bray).
The painting shows the family of Q16859671 and his descendants have estate inventories listing this painting as one piece with proper dimensions
Without catalog data to explain them, such stories disappear on Wikidata, because the institutions (one in USA, other in Belgium) only use minimal information on their collection website
Slide two[edit]
This and slide three show variants of this query:
SELECT ?decade (COUNT(?decade) AS ?count) WHERE {
?item wdt:P31 wd:Q3305213 .
?item wdt:P571 ?inception .
?item wdt:P528 ?catcode .
# { ?item wdt:P136 wd:Q134307 .} UNION { ?item wdt:P136 wd:Q1400853 .}
# { ?item wdt:P136 wd:Q107425 .} UNION { ?item wdt:P136 wd:Q191163 .}
# UNION { ?item wdt:P136 wd:Q166030 .} UNION { ?item wdt:P136 wd:Q1935974 .}
# ?item wdt:P136 wd:Q2414609 .
BIND( year(?inception) as ?year ).
BIND( ROUND(?year/10)*10 as ?decade ) .
FILTER( ?year > 1400)
} GROUP BY ?decade
ORDER BY ?decade
Slide 4[edit]
Each type of catalog has its own “culture” of catalog style. In general the catalogs by independent art historians have the best descriptions, but the auction houses tend to have the cleanest “catalog process” and thus better metadata.
Old catalogs lack images, whereas modern exhibition catalogs tend to include images of paintings not in the exhibition – include when possible, number according to “fig” vs. “cat”
We need all types basically (monographs, estate sales, temporary exhibitions, etc)
Slide 5[edit]
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Collection
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Location/Germany
See lists of paintings per collection without creator added (about 10,000 items to match)
See lists of paintings per creator with categories of paintings on Commons (most still have lots of paintings to match/add)
See lists of paintings with collection not yet tracked by Soap (Sum of all paintings) - please check categories/institution templates on Commons]
See Maarten (Multichill) for more lists of things to match
Slide 6[edit]
Monographs are important, and we especially need these added to Wikidata – check “local” Wikipedias for references when possible. With e.g. an OCLC number, you can add the info in English, even though the title is only available in non-English!
We now have a catalog for father and daughter Gentileschi, thanks to MET data donation – catalog fully online with images and references
Painting sold in 2016 for 30.5 million dollars – we should pay more attention to this painter! See Q22329907
Slide 7[edit]
Comparison mapping of artwork template and item number field-by-field for orientation on how to upload your data from a website (e.g. Sotheby's sale) once for both Commons and Wikidata
Monographs are important, and we especially need these added to Wikidata – check “local” Wikipedias for references when possible. With e.g. an OCLC number, you can add the info in English, even though the title is only available in non-English!
We now have a catalog for father and daughter Gentileschi, thanks to MET data donation – catalog fully online with images and references
Painting sold in 2016 for 30.5 million dollars – we should pay more attention to this painter! See Q22329907
Slide 8[edit]
It is hard to find monograph catalogs for some prominent painters, so if you find one, add it to Wikidata. Old overviews of art are also interesting for historic reasons – what are “National treasures” or “Best paintings per genre”?
User:Fae has added lots of catalogs on Commons in c:Category:Art Catalogs– it’s fairly easy to create an item and start matching!
Example: Q42421379 is indexed on Commons here: https://commons.wikimedia.org/wiki/Category:A_catalogue_of_the_pictures_and_drawings_in_the_National_loan_exhibition,_in_aid_of_National_gallery_funds,_held_in_the_Grafton_Galleries,_London_(1909-1910) and on Wikidata now here: https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Catalog/A_catalogue_of_the_pictures_and_drawings_in_the_National_loan_exhibition,_in_aid_of_National_gallery_funds,_held_in_the_Grafton_Galleries,_London_(1909-1910)
Slide 9[edit]
Try to look for the painting item on Wikidata first before creating one from Commons. We have lots of painting items without files in P18 (yet)
Add the catalog number with P528 (catalog code) with the number, then a qualifier for P972 (catalog) and then the catalog q nr. (e.g. catalog Q42308827 for Vivat Oraenge Q42310337)
Slide 10[edit]
Helpful tools
Listeria - see all of the listeria lists under the Soap pages for "Catalog"
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Catalog
for "Creator"
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Creator
for "Collection
https://www.wikidata.org/wiki/Wikidata:WikiProject_sum_of_all_paintings/Collection
Please scroll to the bottom of that screen to see links for Missing collection
Top collections
Collections by number of illustrated paintings
Collections by number of paintings without image
Locations
Creators
Petscan - this is a great tool to look for paintings on Commons (e.g. under paiinting categories of artists) that are not on Wikidata yet
example for Rembrandt
This Petscan query subtracts the paintigns that are already "done" but picks up other images of the same item, or other images that are not paintings (engravings for example) or possible paintings that should have an item number. When possible, add the item number to the Commons image. Over time, we can see which paintings have the most copies on Commons
Quick Statements - for adding items to Wikidata (see the mapping in slide 7 to preserve your work if you are uploading the same data to Commons and Wikidata)
https://tools.wmflabs.org/wikidata-todo/quick_statements.php
Collaborative notes of the session[edit]
How to model in Wikidata relationships between parts of paintings (larger canvases cut into pieces, etc.)?