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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Authority control | 2/3 | https://en.wikipedia.org/wiki/Authority_control | reference | science, encyclopedia | 2026-05-05T07:22:25.700102+00:00 | kb-cron |
Generally, there are different authority file headings and identifiers used by different libraries in different countries, possibly inviting confusion, but there are different approaches internationally to try to lessen the confusion. One international effort to prevent such confusion is the Virtual International Authority File which is a collaborative attempt to provide a single heading for a particular subject. It is a way to standardize information from different authority files around the world such as the Integrated Authority File (GND) maintained and used cooperatively by many libraries in German-speaking countries and the United States Library of Congress. The idea is to create a single worldwide virtual authority file. For example, the ID for Princess Diana in the GND is 118525123 (preferred name: Diana < Wales, Prinzessin>) while the United States Library of Congress uses the term Diana, Princess of Wales, 1961–1997; other authority files have other choices. The Virtual International Authority File choice for all of these variations is VIAF ID: 107032638 — that is, a common number representing all of these variations. The English Wikipedia prefers the term "Diana, Princess of Wales", but at the bottom of the article about her, there are links to various international cataloging efforts for reference purposes.
=== Same name describes two different subjects === Sometimes two different authors have been published under the same name. This can happen if there is a title which is identical to another title or to a collective uniform title. This, too, can cause confusion. Different authors can be distinguished correctly from each other by, for example, adding a middle initial to one of the names; in addition, other information can be added to one entry to clarify the subject, such as birth year, death year, range of active years such as 1918–1965 when the person flourished, or a brief descriptive epithet. When catalogers come across different subjects with similar or identical headings, they can disambiguate them using authority control.
== Authority records and files == A customary way of enforcing authority control in a bibliographic catalog is to set up a separate index of authority records, which relates to and governs the headings used in the main catalog. This separate index is often referred to as an "authority file". It contains an indexable record of all decisions made by catalogers in a given library (or—as is increasingly the case—cataloging consortium), which catalogers consult when making, or revising, decisions about headings. As a result, the records contain documentation about sources used to establish a particular preferred heading, and may contain information discovered while researching the heading which may be useful. While authority files provide information about a particular subject, their primary function is not to provide information but to organize it. They contain enough information to establish that a given author or title is unique, but that is all; irrelevant but interesting information is generally excluded. Although practices vary internationally, authority records in the English-speaking world generally contain the following information:
Headings show the preferred title chosen as the official and authorized version. It is important that the heading be unique; if there is a conflict with an identical heading, then one of the two will have to be chosen:Since the headings function as access points, making sure that they are distinct and not in conflict with existing entries is important. For example, the English novelist William Collins (1824–89), whose works include the Moonstone and The Woman in White is better known as Wilkie Collins. Cataloguers [sic] have to decide which name the public would most likely look under, and whether to use a see also reference to link alternative forms of an individual's name. Cross references are other forms of the name or title that might appear in the catalog and include: see references are forms of the name or title that describe the subject but which have been passed over or deprecated in favor of the authorized heading form see also references point to other forms of the name or title that are also authorized. These see also references generally point to earlier or later forms of a name or title. Statement(s) of justification is a brief account made by the cataloger about particular information sources used to determine both authorized and deprecated forms. Sometimes this means citing the title and publication date of the source, the location of the name or title on that source, and the form in which it appears on that source.