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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 of the system. The translation stage involves the comparison of each term in the subject statement with the descriptors of the thesaurus to determine:
After each term in a subject statement is translated into the descriptors from the thesaurus used in a system, a set of references is established between the terms in a subject statement and the corresponding terms revealed by the thesaurus. This step is essential when the thesaurus is used as a vocabulary control tool in a system which adopts as pre-coordinated indexing system such as, PRECIS, POPSI or BTI. The two kinds of references are:
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