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Roadmap. Shelf arrangement vs. subject collocationDecimal notationHierarchical organizationNumber buildingLanguage-independent representationPotential for customization. Shelf arrangement in the 1800s. Institution-specific, using, e.g., accession order, broad subject classes, size, author name
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1. Melvil Dewey’sIngenious Notational System North American Symposium on Knowledge Organization
June 19, 2009
Rebecca Green
Dewey Decimal Classification
Dewey biographer Wayne Wiegand (1998, 181) argues that Dewey’s scheme “joined strong points from [systems designed by] Cutter, Harris, Shurtleff, and Schwartz. Dewey’s contribution to classification was in joining and adjusting them, not in creating anything new.” Henry Ford’s insights clarify Wiegand’s observation: “‘I invented nothing new,’ he once declared. ‘I simply assembled into a car the discoveries of other men behind whom were centuries of work, and the discoveries of still other men who preceded them. Had I worked fifty or even ten or even five years before I would have failed. So it is with every new thing. Progress happens when all the factors that make for it are ready, and then it is inevitable. To teach that a comparatively few men are responsible for the great forward steps of mankind is the worst sort of nonsense’” (Greenleaf 1961, 138). In the same light, this paper discusses the contributions of the DDC’s notational system without meaning to imply that they arise exclusively from the mind of Melvil Dewey. Dewey biographer Wayne Wiegand (1998, 181) argues that Dewey’s scheme “joined strong points from [systems designed by] Cutter, Harris, Shurtleff, and Schwartz. Dewey’s contribution to classification was in joining and adjusting them, not in creating anything new.” Henry Ford’s insights clarify Wiegand’s observation: “‘I invented nothing new,’ he once declared. ‘I simply assembled into a car the discoveries of other men behind whom were centuries of work, and the discoveries of still other men who preceded them. Had I worked fifty or even ten or even five years before I would have failed. So it is with every new thing. Progress happens when all the factors that make for it are ready, and then it is inevitable. To teach that a comparatively few men are responsible for the great forward steps of mankind is the worst sort of nonsense’” (Greenleaf 1961, 138). In the same light, this paper discusses the contributions of the DDC’s notational system without meaning to imply that they arise exclusively from the mind of Melvil Dewey.
2. Roadmap Shelf arrangement vs. subject collocation
Decimal notation
Hierarchical organization
Number building
Language-independent representation
Potential for customization
3. Shelf arrangement in the 1800s Institution-specific, using, e.g., accession order, broad subject classes, size, author name
Duplication of effort
Initial classification
Reclassification
Notation could specify exact location of item, or
Final element of order might be governed by something like author name, or
In the end, one might be relegated to scanning the shelves
Some library shelving arrangements of the 1800s were a lot like today’s bookstores!
Notation could specify exact location of item, or
Final element of order might be governed by something like author name, or
In the end, one might be relegated to scanning the shelves
Some library shelving arrangements of the 1800s were a lot like today’s bookstores!
4. Eureka! The insight
Use classification scheme to establish relatively fine-grained subject representation
Use decimal notation to govern order of shelf arrangement
Immediate benefits derived from the insight
Institution-independent relative location
Cooperative classification
Linear sequence + hierarchical organization
5. OSI model applied to shelf arrangement Shelf arrangement as bottom/physical layer of model
Each layer provides services to layer above
Support access to / use of intellectual/artistic content of collection as top/application layer of model OSI = Open Systems InterconnectionOSI = Open Systems Interconnection
6. Decimal notation (1) DDC 1,1876
Every class admitted of division into 9 subclasses (represented 1-9), plus 0 to represent no division
“No difficulty found in . . . omitting the initial zero;” some 2-digit numbers (e.g., 51 [051])
Also some 4-digit numbers (e.g., 5545 [554.5])
Notation incorporated decimal point “as if it were written after the first figure”
7. Decimal notation (2) DDC 2, 1885
Leading zeroes retained
Decimal point between third and fourth digits
Effect
Notation more expressive
Filing order same whether interpreted numerically or alphanumerically
8. Hierarchical organization (1) New subjects can be accommodated by notational expansion, e.g.,
005.75 Specific types of data files and databases
005.753 Temporal, spatial, constraint databases
9. Hierarchical organization (2) Interoperable expansions
2—455 5 Pisa province (Eng)
Provincia di Pisa (It)
2—455 51 Pisa (Eng)
Comune di Pisa (It)
2—455 52 Nordovest della provincia di Pisa (It)
2—455 523 San Guiliano Terme (It)
10. Hierarchical organization (3) Flexible granularity
320.5 Political ideologies
320.53* Collectivism and fascism
320.532 Communism
320.532 2 Marxism-Leninism
*Abridged edition stops here
11. Hierarchical organization (4) Expressivity of notation
Specificity
Psychology 150
Emotions of children 155.4124
Relationships among subjects
Oats 633.13
Rye 633.14
Corn 633.15
Barley 633.16
12. Number building (1) Mnemonicity
China T2—51, 951
Chinese language T6—951, 495.1
Chinese literature 895.1
Chinese religions 299.51
Chinese Communist Party 324.251075
Chinese calendar 529.32951 Batty (1976, 3) suggests that with the process of number building, seen in rudimentary form in even the first edition, Dewey made one of his greatest contributions. He describes the model thus: “the recognition of the characteristic aspects of the subject, the separate listing of those aspects in general-to-specific order, the availability of the detail from general aspect to divide the specific aspects further, the consequent assembly order of specific aspects divided by general aspects, and the mnemonic effect of the consistent use of simple notation from the two aspects.” And it all takes place within and dovetails with hierarchically expressive notation. Batty (1976, 3) suggests that with the process of number building, seen in rudimentary form in even the first edition, Dewey made one of his greatest contributions. He describes the model thus: “the recognition of the characteristic aspects of the subject, the separate listing of those aspects in general-to-specific order, the availability of the detail from general aspect to divide the specific aspects further, the consequent assembly order of specific aspects divided by general aspects, and the mnemonic effect of the consistent use of simple notation from the two aspects.” And it all takes place within and dovetails with hierarchically expressive notation.
13. Number building (2) Intrafacet relationships
Ceramic arts of Jews 738.089924
738 Ceramic arts
089 Ethnic and national groups
(from Table 1)
924 Jews
(from Table 5 as instructed under T1—08905-T1—08999: Add to base number T1—089 notation T5—05-T5—9 from Table 5)
14. Number building (3) Intrafacet relationships—cont.
French masters 759.4074
759 (Painting and paintings) Historical, geographic, persons treatment
4 France (from Table 2, as instructed at 759.3-759.8 Miscellaneous parts of Europe: Add to base number 759 the numbers following –4 in notation 43-48 from Table 2)
074 Exhibitions (from Table 1)
15. Language-independent representation (1) 713
Landscape architecture of trafficways
Arquitectura paisajística de las vías de tráfico
Aménagement paysager des voies de communication
Landschaftsgestaltung für Verkehrswege
Landskapsarkitektur for trafikkĺrer First line can be understood by speakers of all the languages represented on slideFirst line can be understood by speakers of all the languages represented on slide
16. Language-independent representation (2) 713
????te?t????? t?p??? ??a a?t???e? µetaf????
??????????? ??????????? ???????????? ?????
???????? ??? ?? ???? ??????
? ???? ???????? ?????? ????? First line can be understood by speakers of all the languages represented on slideFirst line can be understood by speakers of all the languages represented on slide
17. Potential for customization (1) Choice of level of specificity
Shelf arrangement
Full vs. abridged edition
Local practice
Search
Truncated search plus wildcard operator
18. Potential for customization (2) Search by subject component, using 085 - Synthesized Classification Number Components (MARC bibliographic format)
085 ## $b759 $a759.3 $c759.8 $z2 $r4 $t4 $u759.4
085 ## $b759.4 $z1 $t074 $u759.4074
Search on 75* and 2—44* for French painting and paintings
19. Potential for customization (3) Display using personal citation order
Standard citation order in Table 1: place + time
Europe, 19th century 1—094034
Europe, 20th century 1—09404
Asia, 19th century 1—095034
Asia, 20th century 1—09504
Africa, 19th century 1—096034
Africa, 20th century 1—09604
20. Potential for customization (4) Display using personal citation order
Reverse citation order: time + place
Europe, 19th century 1—094 + 034
Asia, 19th century 1—095 + 034
Africa, 19th century 1—096 + 034
Europe, 20th century 1—094 + 04
Asia, 20th century 1—095 + 04
Africa, 20th century 1—096 + 04