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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.
Professional Directories The past four decades have witnessed the growth of national, international, and local professional associations whereby scholars of a particular field
What are the main features of the Homeric Worldview
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Define Conflicts of Interest? Conflict of interests is a situation in which two or more interests are not at the same time realizable. It is the disagreement among public obli
Free Indexing Language It is the nature of free indexing that any word or term-that suits the subject may be assigned as a subject heading in catalogue or as an indexing term
Bilingual and Multilingual Dictionaries There are bilingual and multilingual dictionaries, a good number of translating dictionaries pertaining to various foreign languages a
Geographical Sources The geographical sources are a category of reference books that help in answering queries connected to places. They give information like description an
Special Dictionaries The dictionaries, which are compiled for a special purpose or aspects of a language, are called special dictionaries. Most of these aspects of words, whic
outer forms of cataloguing
Special Features The prestige of the encyclopaedias is enhanced by some of the unique features employed in the publication of encyclopaedias. i) Most of the major articl
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