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Components of an IRS
Lancaster [1979] considers that an Information Retrieval System (IRS) comprises the following components:
i) the document selection sub-system
ii) the indexing sub-system
iii) the vocabulary sub-system
iv) the searching sub-system
v) the sub-system of interaction between the user and the system (i.e., user interface)
vi) the matching sub-system, that is, the system that matches the document representations against the user requirements.
All the above mentioned sub-systems are utilised in the performance of the following activities:
Stages in System Development Information professionals are mostly concerned with the first situation. In this context, the emphasis is on the systems requirements specificatio
Circulation Control System The circulation control system is one of the important components of any library system. The primary function of any circulation control system is
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UML diagram
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