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THESAURUS
The word 'thesaurus' comes from Greek term 'thesauros' meaning a storehouse or treasury of words. The Oxford English Dictionary defines "thesaurus" as a archaeological term "a treasury of temple, etc." and quotes its use in 1736 as a treasury or store house of knowledge. Dictionary defines it as "a book of words or of information about a particular field or a set of concepts, specially a dictionary of synonyms". A dictionary lists words along with their meanings; synonyms, etc. in alphabetical order, but a thesaurus assembles all words related to an idea at one place. Modern usage may be said to date from 1852 when Peter Mark Roget thought of his thesaurus as a classification of ideas. Roget's Thesaurus had nothing to do with information retrieval. But his novel idea was later profitably employed in the compilation of thesaurus for information retrieval.
Helen Brownson is said to be the first person who used the term 'thesaurus' in the context of information retrieval in a paper presented at the Dorking Conference on Classification Research in 1957. H. P Luhn was probably the first person to think in" terms of information retrieval thesaurus, who suggested the compilation, for indexing purposes, of 'families of notions' and dictionary of 'notion families'. The first thesaurus used in information retrieval system was developed by Du Pont in USA around 1969 and since then many thesauri have been brought out in different subject fields: A number of standards have also come into existence to provide guidelines in the design and development of monolingual and multilingual: thesauri.
Authorship Having seen the predominance of author catalogue, we need to know what constitutes authorship in the context of cataloguing. It is seen above that AACR-2 regards a
"Eight million gods seemed to be listening with their ears erect for their Shinto prayers . Messengers ran off to order Sutra-reciting at various temples; thus the night was pas
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Cataloguing-in-Publication The cataloguing-in-Source given up by the LC in 1959 was revived in July 1971. The entries were prepared from galley proofs and data returned to pu
Universal Bibliographic Control The bibliographic control of documents at the international level has always been a problem. Librarians have been concerned about this problem
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VOCABULARY CONTROL Subject cataloguing/indexing involves assigning terms to represent what the document is about. The complete set of index terms in a subject indexing syst
NON CONVENTIONAL INDEXING MODEL - CITATION INDEXING Another unique indexing model was developed by Eugene Garfield in early 1960's. The model is non conventional in the sense
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
Multilingual Dictionaries The second type useful for translation are known as multilingual or polyglot dictionaries. They provide similar words in three or more languages
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