Universal Decimal Classification
UDC is one of the most widely used classification schemes for all fields of knowledge. It is used in libraries, bibliographic, documentation and information services in over 130 countries around the world and is published in over 40 languages.
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UDC Consortium
The UDCC is a non-profit association of publishers established to maintain, develop and distribute the UDC for the benefit of its users. Apart from its strategic, managerial and promotional responsibilities, the UDCC also appoints an editorial team and advisory board to oversee the content of the scheme and contribute to its regular revision in order to reflect new knowledge.
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News
Article on Automatic assignment of UDC codes (IEEE Access)
12/12/2023
An interesting article entitled "A Hybrid Approach to Recommending Universal Decimal Classification Codes for Cataloguing in Slovenian Digital Libraries" by M. Borovic, M. Ojstersek and D. Strnad was published in IEEE Access
ISKO UK Educational programme features a UDC Workshop
14/10/2021
ISKO UK has initiated a series of online lectures entitled Knowledge Organization Education (KOED). This autumn's programme started with three KOS Workshops. One of the workshops is "Introduction to Universal Decimal Classification" presented by Aida Slavic, UDC Editor-in-Chief
Events
April
29
IAC2025 - Information Architecture Conference
Philadelphia (US)
June
02
CoLIS 2025: 12th International Conference on Conceptions of Library and Information Science
Glasgow (UK)
June
19
NASKO 2025: 10th North American Symposium on Knowledge Organization: Multi-Purpose KO: Risks, Challenges and Opportunities
Portland (US)
June
25
VIII ISKO Brazil 2025: Artificial Intelligence in Knowledge Organization
Canela (Brazil)
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