Page 99 - DLIS002_KNOWLEDGE ORGANIZATION CLASSIFICATION AND CATALOGUING THEORY

Knowledge Organization: Classification and Cataloguing Theory

Notes 52-726 Plasma
52-728 Neutrinos
52-73 Very Short Wave Photons
52-732 Gamma Rays

52-735 X-rays
52-739 Extreme Ultraviolet

Example: If we needed to classify a book on radio emission from the atmosphere of
Venus, we would have the string: 523.42 – 77. This follows from the class number for Venus,
523.42, combined with the auxiliary for radio radiation, namely – 77.
1. If the topic of a book concerned aspects of the solar photosphere in visible light, we would
have: 523.942 – 75. This follows from the class number for the solar photosphere, 523.942,
combined with the auxiliary for visible radiation, namely –75.
2. Where no particular object is dealt with, for example in a text on radio astronomy, the
following number would be used: 52–77.

Self Assessment

Fill in the blanks:
7. …………………is a way of creating mnemonic consistency in the classification.
8. The …………………are used to link two numbers, so expressing relations of various kinds
between two subjects.

5.5 Alphabetical Subject Index

The publication of Alphabetical Subject Index was issued in 1988. The entries in the index highlight
the terminology that is used in the schedules. In many instances, qualifiers are not added in each
term depicting the context where the term is used. In order to tide over this obstacle, few index
entry comprise of ‘term’ followed by numerous class numbers.

Example: Axes is indexed as well as unqualified to five numbers 581.44, 621.968, 622.231,
631.342, 672.719. So in order to understand this context where all these five class numbers are
used, any one has to refer to the schedules.

However, this index does not depict the listed context of the terms. Instead it highlights the
range of possible locations for a specific concept. Thus, the index entry arrangement is word-by-
word. Hence it is advised to the index users not to classify a document exclusively on the basis
of index but to affirm the class number in the schedule. Following is the index sample entry:

Lighters 629.123.15, 662.58
Cigar and cigarette 662.592
Electric 662.593
Flint .662392
Pocket 662.59

Using solar heat 662.591

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