TY - BOOK AU - Bajpai, S.K. TI - Modern Information Retrieval SN - 9788170002710 SN - 817000271 U1 - 025.04 23 PY - 1999/// CY - New Delhi PB - Ess Ess Publications. KW - Information Science KW - Modern Library N1 - 1. Modern Information Retrieval ; 2. Information Retrieval Services ; 3. Traditional Retrieval Tools ; 4. The Need for Information; 5. Languages or Information Retrieval ; 6. Library and Information Science ; 7. Probabilistic Retrieval ; 8. Interaction and Retrieval in On-line Catalogues; 9. Information Centre Management; 10. Conceptual Information Retrieval ; 11. Patterns of Information Retrieval Systems N2 - An information retrieval system is a device interposed between a potential user of information and the information problem, the purpose of the system is to computer wanted items and to filter out unwanted items. This goal is pragmatic: to make acceptable the time required to satisfy the information need, or to conclude that it cannot be satisfied. In a town's public library, for example, the card catalogue or online cataloge is an information retrieval system applied to a local collection of books and other materials. However, as we intend the term tube understood, information retrieval is a concept that applies to systems and functions outside as well as within the framework traditional libraries. The human brain itself can be viewed as an enormously powerful information retrieval system. ER -