UDC Master Reference File
E387569
Universal Decimal Classification resource
bibliographic classification authority file
controlled vocabulary database
The UDC Master Reference File is the authoritative database containing the complete, up-to-date schedules and structure of the Universal Decimal Classification system used for organizing library and information resources worldwide.
All labels observed (2)
| Label | Occurrences |
|---|---|
| UDC Master Reference File canonical | 2 |
| UDC notation | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3802446 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: UDC Master Reference File Context triple: [UDC Consortium, governs, UDC Master Reference File]
-
A.
UDC Consortium
The UDC Consortium is the international organization responsible for maintaining, updating, and promoting the Universal Decimal Classification system used in libraries and information services worldwide.
-
B.
Universal Decimal Classification
Universal Decimal Classification is an international library classification system that organizes knowledge into a detailed, hierarchical numeric scheme used widely in libraries and information centers around the world.
-
C.
Municode online library
Municode online library is a digital platform that provides public access to codified municipal laws, ordinances, and regulations for cities and local governments, including Chicago.
-
D.
MARC
MARC is a regional planning and coordination agency serving the Kansas City metropolitan area, focusing on transportation, emergency services, environmental planning, and community development.
-
E.
MARC
MARC is a commuter rail service in Maryland that connects Washington, D.C. with Baltimore and other regional destinations.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: UDC Master Reference File Target entity description: The UDC Master Reference File is the authoritative database containing the complete, up-to-date schedules and structure of the Universal Decimal Classification system used for organizing library and information resources worldwide.
-
A.
UDC Consortium
The UDC Consortium is the international organization responsible for maintaining, updating, and promoting the Universal Decimal Classification system used in libraries and information services worldwide.
-
B.
Universal Decimal Classification
Universal Decimal Classification is an international library classification system that organizes knowledge into a detailed, hierarchical numeric scheme used widely in libraries and information centers around the world.
-
C.
Municode online library
Municode online library is a digital platform that provides public access to codified municipal laws, ordinances, and regulations for cities and local governments, including Chicago.
-
D.
MARC
MARC is a regional planning and coordination agency serving the Kansas City metropolitan area, focusing on transportation, emergency services, environmental planning, and community development.
-
E.
MARC
MARC is a commuter rail service in Maryland that connects Washington, D.C. with Baltimore and other regional destinations.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Universal Decimal Classification resource
ⓘ
bibliographic classification authority file ⓘ controlled vocabulary database ⓘ |
| abbreviation | MRF ⓘ |
| appliesTo | global UDC user community ⓘ |
| characteristic |
complete representation of current UDC
ⓘ
machine-readable format ⓘ up-to-date representation of UDC structure ⓘ |
| contains |
UDC application notes
ⓘ
UDC associative relations ⓘ UDC auxiliary tables ⓘ UDC captions ⓘ UDC classes ⓘ UDC hierarchical relations ⓘ UDC main tables ⓘ UDC notational structure ⓘ UDC references ⓘ UDC scope notes ⓘ UDC syntactic relations ⓘ |
| dataType | structured classification data ⓘ |
| describes | Universal Decimal Classification ⓘ |
| domain | library and information science ⓘ |
| governs |
official UDC schedules
ⓘ
official UDC structure ⓘ |
| hasRole |
authoritative source for UDC schedules
ⓘ
maintenance tool for UDC structure ⓘ reference database for UDC users ⓘ |
| isPartOf | UDC data and documentation system ⓘ |
| name | UDC Master Reference File self-link ⓘ |
| purpose |
to ensure consistency of UDC use worldwide
ⓘ
to provide an authoritative database of UDC ⓘ |
| relatedTo |
UDC Consortium
ⓘ
Universal Decimal Classification ⓘ
surface form:
Universal Decimal Classification system
|
| subjectOf |
UDC documentation
ⓘ
classification research ⓘ |
| supports |
development of UDC-based tools and services
ⓘ
interoperability between UDC implementations ⓘ standardization of UDC notation ⓘ |
| usedFor |
creating UDC translations
ⓘ
deriving UDC editions ⓘ maintaining UDC schedules ⓘ supporting indexing and retrieval ⓘ supporting information organization ⓘ supporting library classification ⓘ updating UDC classification ⓘ |
| usedIn |
documentation services
ⓘ
information centers ⓘ libraries ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: UDC Master Reference File Description of subject: The UDC Master Reference File is the authoritative database containing the complete, up-to-date schedules and structure of the Universal Decimal Classification system used for organizing library and information resources worldwide.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
UDC notation