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KEY WORD INDEXING MODELS Computers began to be used to aid information retrieval system in the 1950s. The first use of computers in information retrieval was the production
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Data Elements in Added Entries When Unit Card System is followed, the added entries also carry the same data elements as in the main entry. But in addition, the added entry e
Display of Subject Relationships The vital problem concerned with the alphabetical, subject approach is the naming (labeling) of subjects. However, any tool such as the libr
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
What were the profound economic and social changes that took place in Western and Eastern Europe after the "opening of the Atlantic" and the resulting "Commercial Revolution"?
Choice of Heading In cataloguing, a heading is a name (in an author catalogue) or a term (in a subject catalogue) appearing at the head of an entry and may consist of one or
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
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History of Africa : The history of Africa starts along with the prehistory of Africa and the emergence of Homo sapiens in East Africa, ongoing into the current as a patchwork of di
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