subject index

<information science>

An information resource that contains references to other resources, categorised by subject, usually in a hierarchy or ontology.

Yahoo once maintained an Internet subject index.

Search engines by comparison are based not on subject, but relevance, although this difference is often hidden from the user. Integration of knowledge representation into relevance ranking algorithms may reduce this distinction.

Last updated: 1997-04-09

Nearby terms:

subjectsubject indexsubject-oriented programmingsublanguage

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