User:PKM/Books project notes

To be reviewed/resolved

• publication (Q732577): content made available to the general public Is this an "edition" or a new "work" <based on>
• Edition-of-an-edition
• translated text (Q39811647): edition or publication translated from another work or edition is now <subclass of> both "derivative work" and "edition"

General approach

Books and other written works in Wikidata are modeled in 3 layers based on Functional Requirements for Bibliographic Records (Q16388). These layers are:

• Work, corresponding to frbr:work and representing the intellectual content of a written work.
• Version or edition, similar to both frbr:expression and frbr:manifestation, but not exactly equal to either of these. The "version" is a published or otherwise distributed version of a "work", with full bibilographic information, that can be located online or in a library or archive, and used to support statements in Wikidata.
• [exemplar], a physical or digital object that is one and only one instantiation of a "version", such as an individual book or an illuminated manuscript. This is equivalent to frbr:item.

Class trees

Works

The class tree for works is based on version 2 of the FRBR-aligned Bibliographic Ontology (Q44955004). We use the fabio:works hierarchy with modifications and extensions as agreed to by the Wikidata community.

• Types of works should be <subclass of> [pick work item] or one or more of its subclasses.
• Types of works may also be <instance of> genre (Q483394) or one of its subclasses, but should not be <subclass of> a genre.
• Individual works should be <instance of> one or more subclasses of [pick work item].
• Individual works should be linked to their versions using <has edition>.

Versions/editions

The class tree for versions is developed specifically for Wikidata.

• Types of versions should be <subclass of> version, edition or translation (Q3331189) or one of its subclasses.
• Individual versions should be <instance of> version, edition or translation (Q3331189) or one of its subclasses.
• Individual versions should be linked to their works using <edition or translation of>.

Items

• Bibiographic items should be <instance of> their object type (book, illuminated manuscript, codex)
• Bibiographic items should be linked to a version using <exemplar of> the version.