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Property talk:P214

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VIAF cluster ID
identifier for the Virtual International Authority File database [format: up to 22 digits]; please note: VIAF is a cluster, the ID can include multiple items
RepresentsVIAF ID (Q19832964)
Associated itemVirtual International Authority File (Q54919)
Applicable "stated in" valueVirtual International Authority File (Q54919)
Data typeExternal identifier
Corresponding templateTemplate:VIAF (Q25937159)
Template parameteren:Template:Authority control: "VIAF" - Template:Authority control (Q3907614)
Domainpersons, places... (note: this should be moved to the property statements)
Allowed values[1-9]\d(\d{0,7}|\d{17,20}) (2 or more digits (not starting by 0), or none)
ExampleStan Lauryssens (Q447070) → 120062731 (RDF)
Louis Antoine de Pardaillan de Gondrin (Q8056) → 15 (RDF)
Boeing (Q66) → 150088538 (RDF)
Cairo (Q85) → 240782041 (RDF)
Cathedral of Santa Maria d'Urgell (Q951104) → 9972147907520779210008 (RDF)
Jean-Louis Foncine (Q3166765) → 44298806 (RDF)
214796741 (RDF)
198592695 (RDF)
Baranagar (Q712504) → 141940265 (RDF)
Sourcehttps://viaf.org
Formatter URLhttps://viaf.org/viaf/$1
Tracking: differencesCategory:VIAF ID different on Wikidata (Q16300230)
Tracking: usageCategory:Pages with VIAF identifiers (Q8709085)
Tracking: local yes, WD noCategory:VIAF not on Wikidata (Q16300231)
See alsoWorldCat Entities ID (P10832)
Lists
Proposal discussionProposal discussion
Current uses
Total8,754,177
Main statement3,662,450 out of 33,656,281 (11% complete)41.8% of uses
Qualifier51<0.1% of uses
Reference5,091,67658.2% of uses
Search for values
Explanations [Edit]

Not all VIAF numbers are valid. Please note:

VIAF changes numbers with dashes

Instituto Brasileiro de Geografia e Estatística (Q268072)

  1. GND 1026669-0 (correct)
  2. VIAF-GND 004164695 ("404 Not Found")

Similar problem with Bibliothèque nationale de France ID (P268): VIAF has problems with IDs containing numbers and letters.

VIAF identifier
  1. VIAF 120062731 Stan Lauryssens = Yes
  2. VIAF 293348885 Stan Lauryssens ("undifferentiated") = No

Compare: GND identifier (Help:P227)

  1. GND 1019646128: Stan Lauryssens (b. 1946), type p (person) = Yes
  2. unvalid ID 122968751: Stan Lauryssens (no info), type n (name) = No
Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)
List of violations of this constraint: Database reports/Constraint violations/P214#Entity types, hourly updated report
Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)
List of violations of this constraint: Database reports/Constraint violations/P214#Scope, hourly updated report, SPARQL
Format “([1-9]\d{1,8}|[1-9]\d{18,21}|)”: value must be formatted using this pattern (PCRE syntax). (Help)
List of violations of this constraint: Database reports/Constraint violations/P214#Format, hourly updated report, SPARQL
Conflicts with “subclass of (P279)”: this property must not be used with the listed properties and values. (Help)
"exceptions" is incompatible with "mandatory" parameter List of violations of this constraint: Database reports/Constraint violations/P214#Conflicts with P279, hourly updated report, search, SPARQL
Distinct values: this property likely contains a value that is different from all other items. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Mohican State Forest (Q49330830), Mohican State Park (Q6894163), British Ceylon (Q918153), Dominion of Ceylon (Q2670092), Yeonil Jung Clan (Q12607474), Dongnae Jung Clan (Q12593301)
List of violations of this constraint: Database reports/Constraint violations/P214#Unique value, SPARQL (every item), SPARQL (by value)


Error reports
Contact:

See en:Wikipedia:VIAF/errors. Please note that VIAF retrieves Wikidata mappings periodically and rebuilds their clusters based on that (at least for items about persons). VIAF identifiers can be merged based on that or component moved to other VIAF identifiers.

Ideally this information should be moved to the item for the reference and be transcluded from there.
Reports:
Error type Item(s) affected Description/Duplicates Exception Reported Resolved (also unpublished) Resolved and published Wikidata updated
Our Lady of Victory Church (Q1280925) The VIAF ID is linking to the wrong item, it's for something in a completely different country. VIAF originally had a different (probably correct) ID but changed it for some reason.
Manoel Theatre (Q576800) The item has two IDs which should be merged. The BIBSYS ID linked from 289802221 is wrong.
Pattern ^th\[((n|nb|nr|no|ns|sh|gf)([4-9][0-9]|00|20[0-2][0-9])[0-9]{6})$ will be automatically replaced to \1 and moved to Library of Congress authority ID (P244) property.
Testing: TODO list
Pattern ^([1-9]\d{1,8}|[1-9]\d{18,21})\/$ will be automatically replaced to \1.
Testing: TODO list

Rename VIAF ID to VIAF cluster ID

[edit]

VIAF consists of clusters that are continuously improved and reorganized. Imho we should change the name of this property from "VIAF ID" to "VIAF cluster ID" to clarify this. --Kolja21 (talk) 19:18, 10 January 2025 (UTC)[reply]

  1.  Support I don't know about "improved", but yes, each is an ID of an automated cluster it doesn't represent any "real" world entity, e.g. human, but just a cluster, as opposed to the items in the cluster which represent such things. So the relation between a real world entity and the VIAF cluster ID can change more often and does so. Heinrich Frankfurt (talk) 20:23, 10 January 2025 (UTC)[reply]

@Kolja21: highest rate of IDs per item, see analysis for 2025-01-01 https://www.wikidata.org/w/index.php?title=Wikidata_talk:WikiProject_Authority_control&diff=prev&oldid=2296871611 Heinrich Frankfurt (talk) 03:23, 11 January 2025 (UTC)[reply]

Search interface deteriorated

[edit]

The search results no longer include the source indicator icons. This makes them considerably harder to assess. Has someone a contact there who could raise this? Another option would be that Wikimedia provide a search interface instead. e 22:07, 12 January 2025 (UTC)[reply]

I confirm, this is very annoying; I'm not sure it is temporary. Epìdosis 18:12, 18 January 2025 (UTC)[reply]

Redirects no longer working

[edit]

So along the other changes, it seems now that IDs are completely retired and don't redirect to other clusters (example). I hope this is just temporary, otherwise it's a really bad idea. --Jahl de Vautban (talk) 17:31, 18 January 2025 (UTC)[reply]

+1. Same happend to withdrawn identifier value (Q21441764). These IDs are gone and we can't see if the ID was an error or withdrawn. (Sometimes, possibility 3, it's just a delay in retrieval.) Not a good working condition. --Kolja21 (talk) 18:08, 18 January 2025 (UTC)[reply]
Yes, both redirected and abandoned clusters seem to have been superseded by a generic "Page or resource not found!" i.e. error 404; the same error also happens when one searches for a VIAF ID which never existed. This is highly problematic as it doesn't ensure that the cluster IDs are permanent (they have never been, but at least with redirected and abandoned clusters it was easy to reconstruct the mutations ...). Epìdosis 18:15, 18 January 2025 (UTC)[reply]

Retrieved

[edit]

Since VIAF clusters are not stable we should add that retrieved (P813) is required. --Kolja21 (talk) 04:32, 1 February 2025 (UTC)[reply]

Context: as of now we have 3.607 M VIAF cluster ID (P214) statements (https://qlever.cs.uni-freiburg.de/wikidata/ztSCgc) and 1.795 M statements have a reference whatsoever (https://qlever.cs.uni-freiburg.de/wikidata/mK6zmZ), so about half; the reference contains retrieved (P813) in 1.191 M statements (https://qlever.cs.uni-freiburg.de/wikidata/YZxlNr).
Out of 15.1 k deprecated VIAF IDs (https://qlever.cs.uni-freiburg.de/wikidata/ApuKby), 8.8 k have a reference (https://qlever.cs.uni-freiburg.de/wikidata/d6Fc2q) and specifically 8.2 k have a reference with retrieved (P813) (https://qlever.cs.uni-freiburg.de/wikidata/utzgNo).
I think P813 on deprecated clusters is very useful and in the last months I started using it systematically; for non-deprecated clusters I think it would be a good idea in principle, but I'm unsure about its feasibility, unless we decide e.g. that a bot passes and adds it on the basis of the page history (but would it be really worth?). Epìdosis 10:26, 1 February 2025 (UTC)[reply]

VIAF on improbable items

[edit]
JakobVoss (talk) ClaudiaMuellerBirn (talk) Criscod (talk) Daniel Mietchen (talk) Ettorerizza (talk) Ls1g (talk) Pasleim (talk) Hjfocs (talk) 17:24, 21 January 2019 (UTC) PKM (talk) 2le2im-bdc (talk) 20:30, 24 January 2019 (UTC) Vladimir Alexiev (talk) 16:37, 21 March 2019 (UTC) ElanHR (talk) User:Epìdosis (talk) Tris T7 TT me UJung (talk) 11:43, 24 August 2019 (UTC) Envlh (talk) SixTwoEight (talk) User:SCIdude (talk) Will (Wiki Ed) (talk) Mathieu Kappler (talk) So9q (talk) 19:33, 8 September 2021 (UTC) Zwolfz (talk) عُثمان (talk) 16:31, 5 April 2023 (UTC) M2k~dewiki (talk) 12:28, 24 September 2023 (UTC) —Ismael Olea (talk) 18:18, 2 December 2023 (UTC) Andrea Westerinen (talk) 23:33, 2 December 2023 (UTC) Peter Patel-Schneider[reply]

Notified participants of WikiProject Data Quality As many know, our coverage of VIAF on items that are not instance of (P31)human (Q5) is very bad, both in terms of low coverage and of imprecise coverage; many "Geographic Names" and "Corporate Names" VIAF clusters are conflated and this doesn't help, but also in the case of good clusters, the Wikidata items linking to them are often plainly wrong, and this usually depends on a (present or past) wrong clusterization by VIAF itself. A good way to spot wrong matches is looking at some items which should never, or almost never, link to VIAF: I have cleaned in the last days more than 60 cases of P214 in items being instance of (P31)Mars crater (Q1475691), all completely wrong (some examples: Ome, Aki, Swanage, Maidstone), and I have moved them to the correct item if easily understandable (in most of the cases, fortunately, it was easy). I will report here other cleaned instances. --Epìdosis 19:11, 8 February 2025 (UTC)[reply]

Cleaned also more than 40 items with instance of (P31)cardinal title (Q1092939) (examples: San Luigi dei Francesi, San Paolo alle Tre Fontane, Santa Maria in Portico Campitelli). --Epìdosis 23:36, 8 February 2025 (UTC)[reply]
Cleaned also more than 100 case of P214 on items being instance of (P31) of crater (Q3240715) or its recursive subclasses outside Earth, i.e. on items having located on astronomical body (P376) (examples: Con, Menzel, Bran); only 5 cases are effectively correct (https://w.wiki/C$FK). Epìdosis 10:24, 9 February 2025 (UTC)[reply]

problem with P4354

[edit]

Hi,

I've tried to correct the search formatter URL (P4354) URL, but it don't work. I don't understand what is the problem. Simon Villeneuve (talk) 10:52, 24 April 2025 (UTC)[reply]

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