1. CIAN Forum 2004 Taxonomies, thesauri, subject headings – what are they and how do we use them?
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Editor's Notes
The concept of modern taxonomy originated in the 1700s when the Swedish botanist, Linnaeus, developed a system of classification and nomenclature for living organisms. In biology a species is place in a single location within a complex hierarchy that encompasses the following levels: Kingdom – Phylum – Class – Order – Family – Genus – Species. In information taxonomies, items may fit into one or more categories
The coverage of the AAT ranges from Antiquity to the present, and the scope is global.
Classification is a system for arranging publications according to broad fields of knowledge and specific subjects within each field. The examples here are all systems for bibliographic classification to determine the physical location of a publication on a shelf in a browsable arrangement.
Most library catalogues use a subject heading vocabulary developed by the Library of Congress (LC), which publishes these headings in a multi-volume set referred to as LCSH or "the big red books."
There are two major types of indexing languages: a) those using natural language terms or words (thesauri, subject headings systems) b) those using symbols: numbers, letters or combination of those (bibliographic classification)
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