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Commons:Monuments database/Categorization

From Wikimedia Commons, the free media repository
ErfgoedBot helps categorizing – but you have to help him a bit!

All images of monuments should be properly categorized. This page describes the categorization process and how this work can be supported by bot - if you help with some basic structures.

Categorization

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Commons uses a tree of categories to organize all the images. Each country will have a root category for its monuments, for example Category:Rijksmonumenten for the Netherlands or Category:National Register of Historic Places for the United States. The categories contain subcategories organized by location, for example by province and muncipality in the Netherlands or by state and county in the United States. These lower categories will generally contain the images or specific categories for certain monuments for example Category:Royal Palace of Amsterdam or Category:Empire State Building. When an image is in a category and also in one of its (grand)parent categories it's called overcategorized. That's something we try to prevent at Commons.

The tracker template

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All images and categories of monuments are tagged with a template to indicate that the image or category is about a certain monuments, for example in the Netherlands we use {{Rijksmonument}} and for the United States we use {{NRHP}}. These templates give a bit of information, maybe include a link to a heritage register and include a (hidden) tracker category, for example Category:Rijksmonumenten with known IDs or Category:National Register of Historic Places with known IDs. These categories should never be added directly, always use the template. The template will sort all the items in the tracker category by identifier. This is used by the bots (more about that later).

How does the categorization bot work?

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To help with the categorization a bot was created. This bot will work on all images in the root categories and will try to categorize them.

  1. Try to find the tracking template and try to extract the identifier: For example at File:De Noorman, Westkapelle 4.JPG {{Rijksmonument}} with identifier 38851.
  2. Lookup the identifier in the monuments database to find if it has a commonscat link. Replace the base category with this category. Bot is done with this image (case A)
  3. Lookup the identifier in the monuments database to find if it has an article.
    1. If this is the case and the article has a {{Commonscat}} link to a category at Commons. Replace the base category with this category. Bot is done with this image. (case B1)
    2. If this is the case, and the article is linked to a Wikidata item, and if the Wikidata item knows about a category at Commons. Replace the base category with this category. Bot is done with this image. (case B2)
  4. Look the identifier up in the monuments database to find in what list the monument is.
    1. If this list has a {{Commonscat}} link to a category at Commons. Replace the base category with this category. Bot is done with this image. (case C1)
    2. If this list is linked to a Wikidata item, and if the Wikidata item knows about a category at Commons. Replace the base category with this category. Bot is done with this image. (case C2)
  5. If the list doesn't contain a link to Commons, look at every Wikipedia category the list is in and try to find Commons category (either via {{Commonscat}} links or via a linked Wikidata item). This might add multiple categories. Bot is done with this image. (case D)

There are several ways the {{Commonscat}} may point to a Commons category:

  • Explicitly having the category as parameter
  • Relying on Wikidata and P373
  • Implicitly to a category named like the article (without parameter).

There are two ways a Wikidata item may point to a Commons category:

How can I help?

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  • If an entry in a list on Wikipedia has its own category here on Commons, add the | commonscat = <name of category here at Commons> to the row template. "commonscat" is the default, but might be localized in your list.
  • Every list on Wikipedia and most categories containing the lists on Wikipedia should have a {{Commonscat}} to Commons. This makes it easier for users to navigate and helps the bot to better categorize the images. You can help by adding the missing links.
  • After the bot run images are left in the root category. These images need some manual attention. Template and/or identifier might be missing or incorrect. You can help by fixing these things.
  • Expand and maintain the category tree. Commons has a lot of categories about specific monuments that are not yet part of the tree. You can help improve our category structure. Add other categories, which may indicate the purpose of the monument (example: Category:Churches in Bruges) or its precise geographic location (example:Category:Ezelstraat (Brugge)).

Skipped countries

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The categorization process skips categories for two reasons.

  1. There is no root Category, or it is not known to the categorization bot.
    • For the bot to be able to process these a root category has to be created, and the upload campaign should default to it. After this you need to contact the international team to add the category to the bot.
  2. There is no tracking template being used on Commons.
  3. The country has been skip-listed. This happens when a country has so many uncategorized images (which the bot cannot fix) that these end up slowing the bot down so much that categorization for other countries suffer.

Overview

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Every night a bot tries to categorize images based on their identifier. This page gives an overview of the work that has been done by the bot and what is left over for the users to do.

country lang Base category Template Total images Categorized images Images left Current image count
ad ca Category:Cultural heritage monuments in Andorra {{Béns Andorra}} 1 0 1 1
ae en Category:Cultural heritage monuments in the United Arab Emirates {{Monument United Arab Emirates}} --- failed: unexpected error during processing --- 568
al sq Category:Cultural heritage monuments in Albania {{Cultural Heritage Albania}} 1 0 1 1
am hy Category:Cultural heritage monuments in Armenia {{Cultural Heritage Armenia}} 271 0 271 271
aq en Category:Antarctic Protected Areas {{Antarctic Protected Area}} 0 0 0 0
ar es Category:Cultural heritage monuments in Argentina {{Monumento Argentino}} 5 0 5 5
at de Category:Cultural heritage monuments in Austria {{Denkmalgeschütztes Objekt Österreich}} 0 0 0 0
au en Category:Cultural heritage monuments in Australia {{Cultural Heritage Australia}} --- skipped: on the skip-list --- 0
az az Category:Cultural heritage monuments in Azerbaijan {{Cultural Heritage Azerbaijan}} --- failed: unexpected error during processing --- 1,195
be-bru nl Category:Cultural heritage monuments in Brussels {{Monument Brussels}} 0 0 0 0
be-vlg en Category:Onroerend erfgoed in Flanders {{Onroerend erfgoed}} 160 0 160 160
be-vlg fr Category:Onroerend erfgoed in Flanders {{Onroerend erfgoed}} 160 0 160 160
be-vlg nl Category:Onroerend erfgoed in Flanders {{Onroerend erfgoed}} 160 0 160 160
be-wal en Category:Cultural heritage monuments in Wallonia {{Monument Wallonie}} 0 0 0 0
be-wal fr Category:Cultural heritage monuments in Wallonia {{Monument Wallonie}} 0 0 0 0
be-wal nl Category:Cultural heritage monuments in Wallonia {{Monument Wallonie}} 0 0 0 0
bo es Category:Cultural heritage monuments in Bolivia {{Monumento Bolivia}} 1 0 1 1
by be-tarask Category:Cultural heritage monuments in Belarus {{Belarus heritage}} 5 0 5 5
ca fr Category:Cultural heritage monuments in Canada {{Historic Places in Canada}} --- failed: unexpected error during processing --- 239
ca-fed en Category:Cultural heritage monuments in Canada {{Historic Places in Canada}} 239 0 239 239
ca-muni en Category:Cultural heritage monuments in Canada {{Historic Places in Canada}} --- failed: unexpected error during processing --- 239
ca-prov en Category:Cultural heritage monuments in Canada {{Historic Places in Canada}} 239 0 239 239
ch de Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
ch fr Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
ch it Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
ch-old en Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
ch2 de Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
ch3 de Category:Cultural properties of national significance in Switzerland {{Cultural property of national significance in Switzerland}} 143 0 143 143
cl es Category:National monuments in Chile {{Monumento Nacional de Chile}} 4 0 4 4
cm fr Category:Cultural heritage monuments in Cameroon {{Cultural Heritage Cameroon}} 14 0 14 14
cn en Category:Cultural heritage monuments in China {{Cultural Heritage China}} --- skipped: on the skip-list --- 31
co es Category:National monuments in Colombia {{Monumento Nacional de Colombia}} 0 0 0 0
cz cs Category:Cultural monuments in the Czech Republic {{Cultural Heritage Czech Republic}} 0 0 0 0
de-by de Category:Cultural heritage monuments in Bavaria {{Baudenkmal Bayern}} 4 0 4 4
de-he de Category:Cultural heritage monuments in Hesse {{Kulturdenkmal Hessen}} 0 0 0 0
de-hh de Category:Cultural heritage monuments in Hamburg {{Kulturdenkmal Hamburg}} 1 0 1 1
de-nrw-bm de Category:Cultural heritage monuments in Bergheim {{Kulturdenkmal Bergheim}} 62 0 62 62
de-nrw-k de Category:Cultural heritage monuments in Cologne {{Kulturdenkmal Köln}} 426 0 426 426
dk-bygning da Category:Listed buildings in Denmark {{Fredet bygning}} 0 0 0 0
dk-fortids da Category:Archaeological monuments in Denmark {{Fortidsminde}} 0 0 0 0
dz ar Category:Cultural heritage monuments in Algeria {{Cultural Heritage Algeria}} --- skipped: on the skip-list --- 739
ee et Category:Cultural heritage monuments in Estonia {{Kultuurimälestis}} 0 0 0 0
eg ar Category:Cultural heritage monuments in Egypt {{Cultural Heritage Egypt}} --- failed: unexpected error during processing --- 3,387
es ca Category:Cultural heritage monuments in Spain {{BIC}} --- failed: unexpected error during processing --- 286
es es Category:Cultural heritage monuments in Spain {{BIC}} --- failed: unexpected error during processing --- 286
es-ct ca Category:Cultural heritage monuments in Spain {{BIC}} --- failed: unexpected error during processing --- 286
es-gl gl Category:Cultural heritage monuments in Spain {{BIC}} --- failed: unexpected error during processing --- 286
es-vc ca Category:Cultural heritage monuments in Spain {{BIC}} --- failed: unexpected error during processing --- 286
fr ca Category:Monuments historiques in France {{Mérimée}} 34 0 34 34
fr fr Category:Monuments historiques in France {{Mérimée}} 34 0 34 34
fr-object fr Category:Objets monuments historiques in France {{Palissy}} 0 0 0 0
gb-eng en Category:Listed buildings in England {{Listed building England}} 118 0 118 118
gb-nir en Category:Listed buildings in Northern Ireland {{Listed building Northern Ireland}} 104 0 104 104
gb-sct en Category:Listed buildings in Scotland {{Listed building Scotland}} --- skipped: on the skip-list --- 404
gb-wls en Category:Listed buildings in Wales {{Listed building Wales}} 364 0 364 364
ge ka Category:Cultural heritage monuments in Georgia {{Cultural Heritage Georgia}} --- skipped: on the skip-list --- 0
gh en Category:Cultural heritage monuments in Ghana {{Cultural Heritage Ghana}} --- skipped: on the skip-list --- 1,351
hk en Category:Declared monuments of Hong Kong {{Declared monuments Hong Kong}} 2 0 2 2
hr hr Category:Cultural heritage monuments in Croatia --- --- skipped: no template --- 158
hu hu Category:Cultural heritage monuments in Hungary {{Monument Hungary}} 1 0 1 1
ie en --- --- --- skipped: no template --- ---
il he Category:Heritage sites in Israel {{Heritage site in Israel}} 48 0 48 48
il-npa he Category:Heritage sites in Israel {{Heritage site in Israel}} 48 0 48 48
in en Category:Cultural heritage monuments in India {{ASI Monument}} 0 0 0 0
in-com commons Category:Cultural heritage monuments in India {{WLM India Wikidata ID}} 0 0 0 0
iq ar Category:Cultural heritage monuments in Iraq {{Cultural Heritage Iraq}} 174 0 174 174
ir fa Category:Cultural heritage monuments in Iran {{Cultural Heritage Iran}} --- skipped: on the skip-list --- 1
it it Category:Cultural heritage monuments in Italy {{Monumento italiano}} --- skipped: on the skip-list --- 680
it-88 ca --- --- --- skipped: no template --- ---
it-bz de Category:Cultural heritage monuments in South Tyrol {{Denkmalgeschütztes Objekt Südtirol}} 0 0 0 0
jo ar Category:Cultural heritage monuments in Jordan {{Cultural Heritage Jordan}} --- skipped: on the skip-list --- 917
jp-nhs en Category:National historic sites of Japan {{NHS Japan}} 0 0 0 0
ke en Category:Cultural heritage monuments in Kenya {{Kenya Monument}} 101 0 101 101
lu lb Category:Cultural heritage monuments in Luxembourg --- --- skipped: no template --- 10
mt de Category:Cultural heritage monuments in Malta {{National Inventory of Cultural Property of the Maltese Islands}} --- skipped: on the skip-list --- 761
mx es Category:Cultural heritage monuments in Mexico {{Monumento de México}} --- failed: unexpected error during processing --- 365
my commons Category:Cultural heritage monuments in Malaysia {{Cultural Heritage Malaysia}} 303 0 303 303
ng en Category:Cultural heritage monuments in Nigeria {{Cultural Heritage Nigeria}} --- failed: unexpected error during processing --- 2,362
nl nl Category:Rijksmonumenten {{Rijksmonument}} 5 0 5 5
nl-aw en Category:Cultural heritage monuments in Aruba {{Cultural Heritage Aruba}} 192 0 192 192
nl-aw nl Category:Cultural heritage monuments in Aruba {{Cultural Heritage Aruba}} 192 0 192 192
nl-gem nl Category:Gemeentelijke monumenten {{Gemeentelijk monument}} 1 0 1 1
nl-prov nl Category:Provinciale monumenten {{Provinciaal monument}} 5 0 5 5
no no Category:Cultural heritage monuments in Norway {{Monument Norge}} 14 0 14 14
np en Category:Cultural heritage monuments in Nepal {{Cultural Heritage Nepal}} --- skipped: on the skip-list --- 5
pa es Category:Cultural heritage monuments in Panama {{PCN}} 89 0 89 89
pe es Category:Cultural heritage monuments in Peru {{Monumento de Peru}} --- skipped: on the skip-list --- 1,040
ph en Category:Cultural heritage monuments in the Philippines {{WMPH-ID}} 3 0 3 3
pk en Category:Cultural heritage monuments in Pakistan {{Cultural Heritage Pakistan}} 86 0 86 86
pl pl Category:Cultural heritage monuments in Poland {{Zabytek nieruchomy}} 1659 0 1659 1,659
pt pt Category:Cultural heritage monuments in Portugal {{IGESPAR}} 0 0 0 0
pt-wd pt Category:Cultural heritage monuments in Portugal {{MonumentIDPortugal}} 0 0 0 0
ro ro Category:Historical monuments in Romania {{Monument istoric}} 4 0 4 4
rs sr Category:Cultural heritage monuments in Serbia {{Cultural Heritage Serbia}} --- failed: unexpected error during processing --- 686
ru ru Category:Cultural heritage monuments in Russia --- --- skipped: no template --- 0
se-arbetsl sv Category:Working Life Museums in Sweden {{Arbetslivsmuseum}} 0 0 0 0
se-bbr sv Category:Listed buildings in Sweden {{BBR}} 0 0 0 0
se-fornmin sv Category:Archaeological monuments in Sweden {{Fornminne}} 5 0 5 5
se-ship sv Category:Listed historical ships in Sweden {{K-Fartyg}} --- failed: unexpected error during processing --- 44
sk de Category:Cultural heritage monuments in Slovakia {{Cultural Heritage Slovakia}} 7 0 7 7
sk sk Category:Cultural heritage monuments in Slovakia {{Cultural Heritage Slovakia}} 7 0 7 7
sr commons Category:Cultural heritage monuments in Suriname {{Cultural Heritage Suriname}} 27 0 27 27
sv es Category:Cultural heritage monuments in El Salvador {{Cultural Heritage El Salvador}} --- skipped: on the skip-list --- 422
th th Category:Cultural heritage monuments in Thailand {{Cultural Heritage Thailand}} 29 0 29 29
tn fr Category:Cultural heritage monuments in Tunisia {{Cultural Heritage Tunisia}} 56 0 56 56
ua uk Category:Cultural heritage monuments in Ukraine {{Monument Ukraine}} --- failed: unexpected error during processing --- 1,870
ug en Category:National Cultural Sites in Uganda {{National Cultural Site Uganda}} --- failed: unexpected error during processing --- 770
us en Category:National Register of Historic Places {{NRHP}} 61 0 61 61
us-ca en Category:California Historical Landmarks {{US-CHL}} 172 0 172 172
uy es Category:Cultural heritage monuments in Uruguay {{Monumento Uruguay}} --- failed: unexpected error during processing --- 533
ve es Category:Cultural heritage monuments in Venezuela {{Monumento Venezuela}} --- skipped: on the skip-list --- 0
wlpa-at de Category:Public art in Austria {{Public Art Austria}} 3 0 3 3
wlpa-es-ct ca Category:Public art in Catalonia {{Art públic Barcelona}} 88 0 88 88
wlpa-fi fi Category:Public art in Finland {{Public Art Finland}} 15 0 15 15
wlpa-il en Category:Public art in Israel {{Public Art Israel}} 667 0 667 667
xk sq Category:Cultural heritage monuments in Kosovo {{Cultural Heritage Kosovo}} 146 0 146 146
za en Category:Cultural heritage monuments in South Africa {{South African Heritage Site}} 106 0 106 106
7581 0 7581
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