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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.
Definition and Scope of Encyclopedia The word `encyclopaedia is derived from the Greek word `enkyklios paideia' meaning 'general education'. It meant `circle of knowledge' or
Bibliography of Bibliographies These are lists of bibliographies to help users in choosing bibliographies. They help in tracing bibliographies. The bibliographic control of b
Subject Indexing Models and Their Principal Features A number of subject indexing models have been designed and developed in the past hundred years or so, many of which are i
Presentation The important consideration in the matter of presentation of entries in indexing and abstracting periodicals is of maintaining uniformity and consistency in rende
Functions of a Thesaurus The major functions of a thesaurus include the following : a) it provides a standard vocabulary for a given subject field by exercising control o
Skeleton Entries for a Dictionary Catalogue One of the meanings for the word "skeleton" is a frame or an outline. In that sense, we now try to see the frame of a main Entry a
Glossary The word `glossary' originates from the Latin word `glossarium' meaning `a collection of words peculiar to a field of knowledge'. Each entry in a glossary is known
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THE INDEXING PROCESS Subject indexing is a crucial operation in the creation and maintenance of index files as retrieval of information depends to a large extent on the qua
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