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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.
Authority The authority of a dictionary can be determined by the reputation of its compiler(s)/editor(s), associates and publishers. Generally, a linguist et a philologist he
General Encyclopaedias General encyclopaedias cover all the existing branches of human knowledge. They are most popular and extensively used reference sources. They are classi
Institutional Resource In many cases information not published in regular publications can be sought directly from research organizations in public, private or government se
Functions of a Subject Authority File The functions of a subject authority file are discussed below: Cataloguing: The subject authority file serves as the source of ind
What are the steps in confronting Moral Dilemmas? Identify the relevant moral factors and reasons. Gather all available facts that are pertinent to the moral factors incl
The Monroe Doctrine of American overlordship in the western hemisphere is a similar story. In 1819, the British proposed a joint declaration to oppose Spanish recolonisation of Sou
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Describe the factors which decide the broad area of scientific activity?
" White-robed [lay persons] will assume high seats [hitherto reserved for monks], while monks will stand on the ground. [Their position] will be no different from that [stipulat
Three Levels of Description The three levels of description are detailed thus: First Level of Description: For the first level of description the following elements are
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