Property talk:P2540

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Aarne–Thompson–Uther Tale Type Index
index used to classify folktales

Represents	Aarne–Thompson–Uther classification system (Q301545)
Data type	String
Template parameter	"Aarne-Thompson Grouping" in en:template:Infobox folk tale
Domain	According to this template: folk tale (Q1221280) According to statements in the property: literary work (Q7725634), folktale type (Q47451145), traditional story (Q7832362) or tale (Q17991521) When possible, data should only be stored as statements
Allowed values	According to this template: numbers between 1 and ca. 2499, optional suffixes like A, B, C (the AT groupings are preceded with "AT") According to statements in the property: \d+\D* When possible, data should only be stored as statements
Example	Cinderella (Q11841) → 510A Stone Soup (Q2439238) → 1548
Formatter URL	http://www.mftd.org/index.php?action=atu&src=atu&id=$1
Tracking: usage	Category:Pages using Wikidata property P2540 (Q23909108)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P2540 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 836 Main statement 830 99.3% of uses Qualifier 2 0.2% of uses Reference 4 0.5% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Format “\d+\D*”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2540#Format, SPARQL

Type “literary work (Q7725634), folktale type (Q47451145), traditional story (Q7832362), tale (Q17991521)”: item must contain property “instance of (P31)” with classes “literary work (Q7725634), folktale type (Q47451145), traditional story (Q7832362), tale (Q17991521)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2540#Type Q7725634, Q47451145, Q7832362, Q17991521, SPARQL

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/P2540#Scope, hourly updated report, SPARQL

Links are broken

The currently used values are still useful since they can be looked up by data consumers in their own references (for example the paper ATU books) but it would be good to fix this. Perhaps even change the property type to 'wikibaseitem' from 'externalid' and just have a one-of constraint with all of the types as their own item (and perhaps require a qualifier indicating which edition of the various publications of the three authors the type is asserted in. Arlo Barnes (talk) 23:51, 26 December 2020 (UTC)

I fixed the formatter URL. - Valentina.Anitnelav (talk) 10:13, 10 November 2022 (UTC)

I agree that types should get their own item. I think that the current version (2004, The Types of International Folktales (Q114956720)) should normally be used for this identifier. I tend to indicate older numbers via catalog code (P528), but your idea of using qualifiers could be a solution (giving the current version a preferred rank). It seems that MFTD (http://www.mftd.org/) includes tale type in older versions (e.g. the Aarne-Thompson-Index (AT)) that are not in the Aarne-Thompson-Uther-Index (ATU) anymore (one example would be tale type AT 64, that was merged into ATU 2A). MFTD does not make this clear, I think. In this case we could keep items for "historical reasons" but set this property's value to <no value>. - Valentina.Anitnelav (talk) 10:30, 10 November 2022 (UTC)