🪪Authority File

NEW

A curated list of authorized names, subjects, or headings used to standardize identification and indexing.

DESCRIPTION

Authority files support consistent identification of entities and topics through authorized headings and cross-references. Libraries and cultural institutions use them for authority control, improving disambiguation and linking, e.g., Library of Congress Authority Files and VIAF. They provide preferred forms, variants, and relationships, enabling reliable search and interoperability. In data systems, authority files help resolve entity identity and maintain metadata quality. Governance ensures updates, provenance, and alignment with external authorities.

ALTERNATIVE DEFINITIONS

Library of Congress Authorities & Vocabularies

The Library of Congress Authorities provide authoritative headings and identifiers for names, subjects, and titles to support consistent cataloging.

Highlights authoritative headings and identifiers for cataloging consistency.

Source

OCLC VIAF

VIAF combines multiple name authority files into a single OCLC-hosted service, linking national authority data to improve name matching.

Emphasizes aggregation of national authority files for disambiguation.

Source

RELATED TERMS

Authority Control VIAF Name Authority Subject Headings Authority Record Library of Congress Getty TGN

COMPETING TERMS

Uncontrolled Vocabulary

KNOWLEDGE AREAS

Metadata Management Data Management Semantic & Knowledge Modeling Data Integration & Interoperability

TARGET AUDIENCE

Data Steward Information Analyst Data Architect Data Management Consultant

EXTERNAL SOURCES

• Wikipedia - Authority control
• Library of Congress - LC Name Authority overview
• OCLC - Virtual International Authority File
• Getty - Getty Thesaurus of Geographic Names

TOP QUESTIONS

Why use an Authority File in metadata?

It enforces standardized identifiers and headings, improving discovery, disambiguation, and linking across systems.

Category: Relevancy

What is the difference between Authority Control and Authority File?

Authority control is the process; an authority file is the curated set of records enabling that process.

Category: Misunderstanding

How are Authority Files maintained?

Stewards manage preferred forms, variants, merges, and provenance. Updates propagate through catalogs and registries.

Category: Management

What risks arise without Authority Files?

Ambiguous entities, duplicate records, and poor search results. Cross-system integration suffers.

Category: Risk

Which institutions publish Authority Files?

Library of Congress, OCLC VIAF, and Getty maintain widely used authorities.

Category: Resources

How do Authority Files help interoperability?

They provide stable identifiers and mappings, enabling consistent references across datasets and platforms.

Category: Integration

Do Authority Files support versions and history?

Yes, records track changes like splits and merges, preserving auditability.

Category: Governance

What is a competing approach to Authority Files?

Uncontrolled vocabularies and ad-hoc naming trades speed for consistency and reliability.

Category: Alternatives

Where can I learn to implement Authority Files?

Start with LC and VIAF documentation, then adopt identifiers and mappings in your catalog.

Category: Learning