Document (#1161)

Author

O'Neill, E.T.
Dillon, M.
Vizine-Goetz, D.

Title

Class dispersion between Library of Congress Classification and the Dewey Decimal Classification

Source

Journal of the American Society for Information Science. 38(1987), S.197-205

Year

1987

Abstract

Two measures are examined that characterize the dispersion of a classification system when mapped to a second classification. One, a distance measure, captures the physical spread of a class when represented in the secon system; the second, from rank-frequency-analysis, characterizes the scatter of tokens over a set of types. The measures are tested by applying them to the library science portions of the LCC and the DDC using a database drawn from MARC records. Class mappings are presented that exemplify four extreme points of the two measures considered together: mappings where both measures score high, mappings where both score low, and mappings where one measure is high and the other is low. The conclusion is that the measures characterize two different properties of dispersion

Object

LCC
DDC

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5. Daranyi, S.; Zawiasa, R.; Hajnal, Z.: Conceptual mapping of a database in the humanities : first results of an experiment with Sophia (1996) 0.10

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