Page 111 - DLIS405_INFORMATION_STORAGE_AND_RETRIEVAL

Information Storage and Retrieval

Notes 10.8 Keywords

ISRS : Information storage and retrieval system, is a network with a built-in user interface.
Precision : Is a measure of exactness.
Recall : Is a measure of completeness.
DBMS : Database Management System.

10.9 Review Questions

1. Write the characteristics of an ISRS.
2. Describe information retrieval process.
3. Where precision and recall are mostly used?
4. How can you evaluate information retrieval system?
5. Explain cluster-based information retrieval.

Answers: Self Assessment

1. (b), 2. (a)
3. Sensitivity
4. Recall
5. Precision
6. Precision and recall
7. Experienced searcher.

10.10 Further Readings

Aitchinson, J and Gilchrist, A: Thesaurus construction. 2nd ed. London: Aslib, 1987.
Deegan. M. and Simon Tanner. Digital futures. London. LA, 2002.
Maltby, A., ed. Sayer’s manual of classification for libraries. 5th. Ed. London: Andre
Deutsch, 1975.

Online links http://en.wikipedia.org/wiki/
http://thenoisychannel.com/2009/03/17/precision-and-recall/
http://www.columbia.edu/cu/lweb/help/clio/boolean_operators.html

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