dewey decimal classification (ddc) (22 nd ed.)
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Dewey Decimal Classification (DDC) (22 nd ed.). LIS 532. Week 4, Jan. 28/09. Classification. The act of organizing the universe of knowledge into some systematic order Establishing relationships among classes and subclasses and finer subdivisions - PowerPoint PPT PresentationTRANSCRIPT
Dewey Decimal Classification (DDC) (22nd ed.)
LIS 532. Week 4, Jan. 28/09
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Classification
The act of organizing the universe of knowledge into some systematic order
Establishing relationships among classes and subclasses and finer subdivisions
Library classification: systematic arrangement by subjects of books and other materials on shelves or of catalogues in a manner which is most useful to those who read or seek a definite piece of information
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DDC Classification
Controlled vocabulary Hierarchy Notation (pure notation vs mixed notation)
Suitable for browsing On shelves OPACs catalogues Internet (Edmonton Public Library)
Synthetic/enumerative
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DDC main classes
000 Generalities100 Philosophy & Psychology200 Religion300 Social Science400 Language500 Natural Science & Mathematics600 Technology (applied sciences)700 The Arts800 Literature & rhetoric900 Geography & History
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DDC hierarchy example
300 Social sciences
390 Customs, etiquette, folklore
391 Costume and personal appearance
391.5 Hair styles
391.7 Jewelry
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Social Sciences
Sociology Statistics Political science Economics
Labour economics Financial economics Land economics
Labour forceAnd market
Conditions of employment
Workers ofSpecific age groups
Women workers
Hierarchical structure from general to specific
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Orientation to DDC 22
5 parts The classification itself is made up of 2 parts:
Main schedules, v.2-3 Tables, v.1
3 aids to use: Introduction and Manual v.1 – includes glossary Index., v.4
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DDC synthesis
DDC is partially enumerative and partially synthetic
Two ways to synthesize – DDC intro 8.1+, v.1, pp. lii++ Tables Divide one section like another
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DDC synthesis
Tables 6 main tables + internal tables Can always use Table 1 once Can use other tables only with permission in
main schedule or in Table 1 Subdivision like another section:
Only as stipulated in the schedules
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Notes in DDC
Notes are important because they provide information that is not obvious in the notational hierarchy Definition notes: indicating the meaning of a
class Scope notes: determining the scope of the
subject matter Class here notes lists major topics in a class Variant-name notes: used for synonyms and
near synonyms
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DDC tables
Table1: Standard subdivisions Table 2: Geographic areas , historical periods, persons Table 3-A: Subdivisions for works by or about individual authors Table 3-B: Subdivisions for works by or about more than one
author Table3-C: Notation to be added where instructed in Table 3-B,
700.4, 808 -809 Table 4: Subdivisions for individual languages Table 5: Racial, ethnic, national groups Table 6: Languages
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How to use tables
Notations from Table 1 may be used wherever applicable
Notations from tables 2, 5, and 6 are used only when instructed
Table 3 and 4 apply only to certain schedules
(i.e., table 3 to the 800s and table 4 to 420-490)
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Choosing a number
Basic principle: Classification by discipline Fundamentals of physical chemistry for premedical
students Chemical calculations: An introduction to mathematics in
chemistry Consider utility of the number in the context of the
aboutness of the information package Use the most specific number available Do not classify from the index alone Try to identify the dominant subject if the work is
multi-topical
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ExampleWork in hand is chiefly about:
Foreign relations between Japan and Britain 1. Locate base number for international relations: 327.2. Consider more specific numbers in the hierarchy: Foreign relations of specific continents and localities … foreign
relations of specific countries: 327.3 - 327.93. Read classification notes:
Class here foreign policy Add to base number 327 notation T2--3-T2--9 from Table 2 , e.g., foreign
relations of Brazil 327.81 , of eastern European countries 327.47 , in Middle East 327.56 ; then, for relations between that nation or region and another nation or region, add 0* and to the result add notation T2--1-T2--9 from Table 2, e.g., relations between Brazil and France 327.81044 , between Brazil and Arab world 327.810174927
4. Construct number: 327 + decimal + area notation for Japan = 52 + 0 + area notation for Britain 41 = 327.52041
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Work in hand is chiefly about: Descriptive research in Library Science
1. Locate base number for library science: 020. 2. Consider more specific numbers in the hierarchy:
020 Library and information sciences 020.7 Education, research, related topics 020.72 Library research
3. Recognize that the standard subdivision 72 is derived from Table 1. Check for a more specific notation:
T1--0 Table 1. Standard Subdivisions T1--07 Education, research, related topics
T1--072 Research; statistical methods T1—0722 - T1—0724 Specific kinds of research T1—0722 Historical research T1--0723 Descriptive research
4. Construct number: 020 + decimal + 72 + 23 = 020.723
Example
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Work in hand is chiefly about: Geology of Finland
1. Locate base number:
500 Science 550 Earth sciences & geology 550 Earth sciences 551 Geology, hydrology, meteorology 552 Petrology 553 Economic geology 554-559 Earth sciences by specific continents, countries, localities in
modern world; extraterrestrial worlds
554 Earth sciences of Europe
Example
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2. Review classification notes:Number built according to instructions under 554-559Add to base number 55 notation T2--4-T2--9 from Table 2 , e.g., geology of Japan 555.2 , of moon 559.91
3. Locate area notation, from Table 2, for Finland:
T2--0 Table 2. Geographic Areas, Historical Periods, Persons T2--3-T2--9 Specific continents, countries, localities; extraterrestrial worldsT2--4-T2--9 Modern world; extraterrestrial worlds T2--4 Europe Western Europe T2--48 Scandinavia T2--489 Denmark and Finland T2--4891-T2--4895 Denmark T2--4897 Finland
4. Construct number: 55 + 4 + decimal + 897 = 554.897
Example
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Work in hand is chiefly about:Commercial policy of the United States
1. Locate number for commercial policy 300 Social sciences 380 Commerce, communications & transportation381 *Commerce (Trade) [formerly 380.1] 381.3 Commercial policy
2. Recognize that there is no explicit provision for geographic subdivision, but that you can use standard subdivisions in Tables 1 and 2 to add subdivision for the United states:a. Instructions in Table 1:
Add to base number T1--09 notation T2--3-T2--9 from Table 2 , e.g., the subject in North America T1--097 , in Brazil T1--0981
Example
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b. Instructions in Table 2:
T2--0 Table 2. Geographic Areas, Historical Periods, Persons T2--3-T2--9 Specific continents, countries, localities; extraterrestrial worldsT2--4-T2--9 Modern world; extraterrestrial worlds T2--7 North America T2--73 United States
3. Construct the number: 381 + decimal + 3 + 09 (T1) + 73 (Table 2) = 381.30973.
Example
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Example: Pop music in Canada
781.63 Popular music 09 Historical, geographic, persons treatment
71 Canada (Table 2)
Number: 781.63 09 71
Base number
Geographicsubdivision Country number
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082 – Dewey Decimal Call Number (R)
IndicatorsFirst – Type of edition
0 – Full edition1 – Abridged edition
Second – Source of call number# - No information provided0 – Assigned by LC4 – Assigned by agency other than LC
Subfield Codes$a – Classification number (R)$2 – Edition number (NR)
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Coding DDC class number in MARC
082 04 $a 779.95 $2 22
082 04 $a 020.723 $2 22
082 04 $a 554.897 $2 22
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Course Resources
• WebDewey (http://connexion.oclc.org/ )• LC subject Heading • Dewey Classification Correlations
(Classification Web) • OCLC worldCat • LC Catalogue