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Definition
There are a number of definitions of 'thesaurus' provided by different experts and organisations. The most comprehensive one has been provided by the International Standards Organisation (ISO) as the basis of structure and functions of a thesaurus. In terms of functions, it states "a thesaurus is a terminological control device used in translating from the natural language of documents, indexers or users into a more constrained 'system language' (documentation language, information language)". In terms of structure, the Standard says, "a thesaurus is a controlled and dynamic vocabulary of semantically and generically related terms which covers a specific domain of knowledge".
In short, a thesaurus may be defined as a compilation of descriptors for use in an information retrieval system arranged in an alphabetical order and manifesting the various types of relationships existing between the descriptors. An information retrieval thesaurus is a kind of semantic networking of concepts.
Levels of Subject Authority Control Subject authority control is exercised at two levels: central and local. At the central level, a central agency (e.g. Library of Congress)
How to Use a Thesaurus The final process of indexing involves translating the relevant subject concepts of the document into the indexing language or the descriptor language
Merits and Deficiencies The strongest aspect of LCSH is that it represents subject headings of a national library, one of the most richest of national libraries of the world.
Gender and Legal Issues- Gender concerning to the personal sexual identity of a single, regardless of the person's outward and biological sex. How people explain femininity and mas
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discuss briefly the scientific and technical achievements of bronze age
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Compare and contrast the views of Karl Marx and Jean-Jacques Rousseau on the ideal form of government. In what sense do both views embrace democratic ideals? How does American demo
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