Page 265 - DLIS002_KNOWLEDGE ORGANIZATION CLASSIFICATION AND CATALOGUING THEORY

Knowledge Organization: Classification and Cataloguing Theory

Notes 252: Canon of Verbal Mnemonics
Verbal mnemonics should be rejected, without any hesitation, if a sequence more helpful to
readers or more filiatory than alphabetical sequence exists. Verbal mnemonics by alphabetical
device should be preferred if the alphabetical sequence is as helpful as any other sequence. The
word forming the basis of verbal mnemonics should be that of international nomenclature
whenever it has been set up.
261: Canon of Scheduled Mnemonics
A scheme of classification should include a preliminary set of schedules of divisions based on
characteristics likely to recur in an array of some order or other of all or many classes, or refer
any recurrent array of divisions to the one schedule of them giving in connection with an
appropriate class.
271: Canon of Seminal Mnemonics
A scheme of classification should use one and the same digit to denote seminally equivalent
concepts in whatever array of whatever class they may appear.

14.4.8 Special Canons for Book Classification

621: Canon of Classics
A Scheme of Book Classification should have a device to bring together all the editions,
translations, and adaptations of a classic, and next to them all the editions, etc., of the different
commentaries on it, the editions, etc., of a particular commentary all coming together, and next
to each commentary all the editions, etc., of the commentaries on itself in a similar manner
(commentaries of the second order), and so on.

631: Canon of Local Variation
The notational system of a scheme of book classification should provide for variations due to
special interests.

662: Canon of Book Number
A scheme of book classification should be provided with a scheme of book numbers to
individualise the documents having the same class of knowledge as their ultimate class.

678: Canon of Collection Number
A Scheme of Book Classification may be provided with a Schedule of Collection Numbers to
individualise the various collections of special documents to be formed on the basis of the
peculiarities of their gross bodies, or their rarity, or service exigency to facilitate use by readers.
The collection numbers based on physical peculiarity may be of use in bibliographies also.

6852: Canon of Distinctiveness
In a Scheme of Library Classification, the class number, the book number, and the collection
number, together forming the call number, should be written quite distinct from one another.

Self Assessment

State whether the following statements are true or false:

10. In Canon of Differentiation, each characteristic used should differentiate, that is, it should
give rise to at least two classes.

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