Wikidata:Property proposal/EDItEUR Thema id

EDItEUR Thema id

Originally proposed at Wikidata:Property proposal/Authority control

Done: EDItEUR Thema ID (P12175) (Talk and documentation)

Represents	EDItEUR Thema (Q122440155)
Data type	External identifier
Domain	item
Allowed values	[A-Z0-9-]+
Example 1	Solar System (Q544) -> PGS
Example 2	Solar System (Q544) -> 1ZM (object has role: qualifier)
Example 3	zydeco (Q245296) -> 6XZ
Example 4	Berlin (Q64) -> 1DFG-DE-BE
Source	https://www.editeur.org/151/thema
Number of IDs in source	8646 (reference https://www.editeur.org/files/Thema/1.5/v1.5_en/20230707_Thema_v1.5_en.xlsx)
Expected completeness	always incomplete (Q21873886)
Implied notability	Wikidata property for an identifier that suggests notability (Q62589316)
Formatter URL	https://ns.editeur.org/thema/en/$1 (search formatter: https://ns.editeur.org/thema/en?search=$1)
See also	Dewey Decimal Classification (P1036), Library of Congress Classification (P1149), Wikidata:Property_proposal/BISAC_Subject_Heading
Applicable "stated in"-value	EDItEUR Thema (Q122440155)
Single-value constraint	yes (with separator "object has role")
Distinct-values constraint	yes
Wikidata project	WikiProject Books (Q8487081)

Motivation

EDItEUR Thema is the major subject classification in the book industry. Codes starting with a digit are qualifiers, i.e. should not be used alone to classify a book. Unlike MeSH qualifier ID (P9341), I think it's easier NOT to make a distinct property for "qualifier" but to use the WD qualifier "object has role" to distinguish them when needed (see the example about "Solar system").

Here is the complete list of identifier patterns (d=digit, A=uppercase alpha), with counts:

     20 A
    145 AA
   1125 AAA
   1503 AAAA
    451 AAAAd
     47 AAAAdd
      6 d
     57 dA
     48 dA-AA-
    156 dA-AA-A
    284 dA-AA-AA
    122 dA-AA-AAA
     61 dA-AA-AAAA
    332 dAA
     95 dAA-AA-A
     15 dAA-AA-AA
    478 dAAA
    456 dAAA-AA-A
    837 dAAA-AA-AA
   1100 dAAA-AA-AAA
    283 dAAA-AA-AAAA
     22 dAAA-AA-AAAAA
      2 dAAA-AA-AAAAAA
    454 dAAAA
    189 dAAAA-AA-A
    159 dAAAA-AA-AA
     51 dAAAA-AA-AAA
    111 dAAAAA
     20 dAAAAA-AA-A
     16 dAAAAAA

Vladimir Alexiev (talk) 15:27, 12 September 2023 (UTC)[reply]

Discussion

Support seems good to me. I was unsure about your "qualifier" case but I think you explained it well enough, this seems like an adequate solution. ArthurPSmith (talk) 19:29, 14 September 2023 (UTC)[reply]

@Vladimir Alexiev, ArthurPSmith: Done EDItEUR Thema ID (P12175). Jonathan Groß (talk) 11:58, 24 November 2023 (UTC)[reply]