ISKO Encyclopedia of Knowledge Organization (IEKO)

editor-in-chief: Birger Hjørland (University of Copenhagen, Denmark)
co-editor and web editor: Claudio Gnoli (University of Pavia, Italy)
contacts: scient@isko.org
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Knowledge organization: general and historical issues

  • Discipline and adjacent disciplines: Knowledge organization (KO); Library and information science (LIS); Archival science; Metaphysics and ontology; Science
  • Movements and bodies: Classification Research Group (CRG); Documentation and KO (francophone tradition); Documentation and KO (German tradition); ISKO
  • Biographical articles (non-living persons only): Aristotle; Conrad Gesner; Carl Linnaeus; Paul Otlet; Henry E. Bliss; S.R. Ranganathan; A. Neelameghan; Eric Coates; Ingetraut Dahlberg

Core concepts in KO

Knowledge organizing systems (KOS)

Knowledge organizing processes (KOP)

Methods, approaches & philosophies

KO in different contexts and applications

  • Computer games; Flickr; Library classification; Maps, cartographic materials & geography information; OPAC; Photograph organization; Research classification; Science mapping; Web archive

Alphabetical list of available entries

Automatic subject indexing of text
BISAC Subject Headings List
Chinese Library Classification (CLC)
Coates, Eric
Colon Classification (CC)
Dahlberg, Ingetraut
Diagnostic and Statistical Manual of Mental Disorders (DSM)
Document theory
Domain analysis
Facet analysis
Ideal language
IFLA Library Reference Model (LRM)
Indexing: concepts and theory
Integrative levels
Knowledge organization (KO)
Knowledge organization system (KOS)
Knowledge pyramid: the DIKW hierarchy
Library and information science (LIS)
Library-Bibliographical Classification (LBC, Russia)
Library classification
Literary warrant
Logical division
Mathematical theory of classification 
Reader-interest classifications
Subject (of documents)
Thesaurus (for information retrieval)
User-based and cognitive approaches
Web archive

New entries are usually listed in ISKO homepage.


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