Depth classification (7) Demonstration (3)

DEPTH CLASSIFICATION (7)

DEMONSTRATION (3) (Continued from p 86 )

S.R. Ranganathan

[Demonstrates the application of an expressive analytico-synthetic scheme of classification to depth classification needed in documentation work.

The middle section ofan article inSprcial Iibraries isused asthe "guinea-pig".

ItsCCNumber isconstructed. Facet analysis, exercise of autonomy ofclassifier in the forrnotion ofschedules need in deeper levels, and the application Chain Procedure are demonstrated. The limitation imposed on UDC byitsrigid enumerative DC core isseen. Lengths of the CC and the UDC [umbers are compared].

o

DAVIS (A.S.). Jr. Legal aspects of machine documentation-(only the section headed "Indexing").

Sp lib, 44,1953, 8-9.

Discusses the exhaustive choice of headings for the subject entries of a docu- ment, in a dictionary catalogue.

1 Analysis Starting point :-Single Phase.

Symbolic

Language Natural Language Focus

(MC) Main Class Library Science

[ E] First round Energy Cataloguing [2P] Second round First

level personality Dictionary catalogue [2P2] Second round second

level personality Subject entry [2P3] Second round third

level personality Heading [2E] Second round energy Choice

CCNo 2 5

5 5

2 Synthesis Colon Class Number is 2 :55,5,1 :1

202 ANNALS

DEC 1954 DEPTH CLASSIFICATION

3 Notes

30 This document IS not concerned with any particular type of library.

In other words [P] is absent.

301 Similarly, [M] is absent.

31 The isolate number for "cataloguing" IS given In Cc, ed 4, as 55.

But in the Depth classification ed by S.R. Ranganathan, it is given as 5. on the basis of some rationalisation. Therefore 5 is used as the isolate number.

32 In Cc, ed 4, there is no schedule of [2P] for [E] 5. The construction of this schedule is left to the autonomy of the classifier.

[2P] must be (W) universe. This universe consists of various kinds of catalogue. The catalogue under consideration is of the alphabeti- cal kind. What is the mnemonic digit for "alphabetical"? The ideas "systematical, geographical, alphabetical, chronological, etc."

are already scheduled in CC, ed 4, chapter 6, "Schedule for foci in Form or F facet." From that, we take the scheduled mnemonic digit for "alphabetical".

321 The schedule for [2P] may be constructed as follows, on the basis of scheduled mnemomes:-

Classified 5 Dictionary

6 Accession 3 Syndetic

33 In Cc, ed 4, there is no schedule of [2P2] for [EJ 5. The construction of this schedule is left to the autonomy of the classifier.

(2P2) is [0] universe in relation to [2P] as [W] universe. This [0]

universe consists of the different types of entries. The entry under consideration is "subject entry." What is the mnemonic digit for

"subject"? In the schedules ofCc, ed 4, referred to in note 32, "sub ject" has' the mnemonic digit 5. Thus, we choose 5. The other kinds of entries are known to be those enumerated in the undermentioned schedule.

LIBRARY SCIENCE 203

S. R. RAl!WANATHAN

Isolate Isolate In Classified In Dictionary

No Catalogue Catalogue

1 Main entry Call Number entry Author entry

2 Added entrv Added entry Added entry

3 Book entry Bookentry Book entry

31 Author entry Specificsubject entry

32 Joint author entry Joint author entry Joint author entry 33 Collaborator entry Collaborator entry Collaborator entry 34 Series entry Series entry Series entry 35 Subject analytical Cross reference entry Subject analytical 37 Author analytical Author analytical Author analytical

4 General en try General entry General entry 5 General subject Class index entry See also subject

entry entry

6 Cross reference Cross reference Crossreference

index entry index entry index entry

332 "Main entry" isdenoted by 1,as it isthe firstentry made for a book. The appropriateness of the other isolate numbers can be easily seen.

The terms in the first, third and fourth columns show how the isolate number in the notational plane is stable, while the isolate term in the verbal plane has to be changed to suit the require- ments of the host classnumber to which theseisolates are attached.

34 In Ge, ed 4, there is no schedule of [2P3] for [E] 5. The construction of this schedule is left to the autonomy of the classifier.

[2P3] is (0) universe in relation to [2P2] as (W) universe. This (0) universe consists of the verious sections ofan entry. The section under consideration is the "Leading section" of the entry. What is the mnemonic digit for it? The principle of Geographical Contiguity, described in the Elements oj classificationof Ranganathan, helps to choose I as the digit for "Leading section".

341 The other sections are known to be those enumerated in the under-mentioned schedule.

204 ANNALS

DEC 1954 DEPTH CLASSIFICATION

Isolate No. Classified Catalogue Dictionary Catalogue

2 3 4 5 6

For Main Entr'y Call number (Lead- section)

Heading Title portion Note

Accession number Tracings

For Book Entry Heading

Intermediate item Index number I

2 3

Heading (Leading section)

Title portion Note Call number Accession number Tracings

Heading

Intermediate item Index number And so on.

35 In Cc, ed 4, there isno schedule for [2E] of [2P3] 1. The construction of this schedule is left to the autonomy of the classifier.

Three problems arise in regard to the heading. These are choice, rendering and style ofwriting. Accordingly the following schedule is suggested :-

Isolate No Isolate

--- 1

2 3

Choice Rendering Style of writing 4 U DC

41 UDC's core does not admit offacet analysis, The only facet attachment it admits, in general, are those of [T], [SJand [E]. The subject classified does not present any [TJ or [SJ. The schedule for 02 Library Science does not contain any special analytical divi- sions, which alone usually provides [E] for attachment to the DC core.

42 Accordingly, the only course is to scan the enumerated

"main classes", asthey are called, topick out suitable "main classes"

and to combine them, asif they are phases, by the colon device.

LIBRARY SCIENCE 205

S. R. RANGANATHAN VI. N 4 43 The two following main classes suggest themselves :-

025'321 Compilation of catalogue entries 025' 345 Mixed catalogues.

Combining these, we get the UDC No 025' 321 : 025' 345 as the nearest possible approximate translation of the name of the subject considered.

44 The colon combination number merely means "compi- tation of entries in mixed catalogues". Both the phases in the number are more extensive than the corresponding phases in the subject.

Neither "Dictionary catalogue," nor "Subject Entry", nor "Heading,"

nor "Choice" is reached.

5 Compardson of Length

And yet, the UDC No contains 14 digits. The CC No. individu- alises every facet and every isolate in the subject with only 10 digits.

6 Chain Procedure

The specific subject of the section of the document considered is given on the basis of the last link of the colon chain as "Choice.

Heading. Subject Entry. Dictionary Catalogue." There may be other readers making other more distant and vague approaches.

All these approaches will be helped by the ClassIndex Entries derived from the Colon Number according to the Rules of Chain Procedure prescribed in Ranganathan's Classified catalogue code, ed 3, 1952. This procedure will give the following headings and index numbers:

Choice. Heading. Subject Entry.

Dictionary Catalogue see 2:55,5,1 : 1 2 Heading. Subject Entry.

Dictionary Catalogue 3 Subject Entry. Dictionary

Catalogue

4 Dictionary Catalogue

5 Cataloguing. Library Science 6 Library Science

see2 :55,5,1 see 2 :55,5

see 2:55 see 2 :5 see 2

206 ANNALS