-
Davies, R.: Classification and ratiocination : a perennial quest (1986)
0.03
0.031225283 = product of:
0.062450565 = sum of:
0.062450565 = product of:
0.12490113 = sum of:
0.12490113 = weight(_text_:r in 683) [ClassicSimilarity], result of:
0.12490113 = score(doc=683,freq=4.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.8275646 = fieldWeight in 683, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.125 = fieldNorm(doc=683)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Intelligent information systems: prgress and prospects. Ed.: R. Davies
-
Sweeney, R.: ¬The development of the Dewey Decimal Classification (1983)
0.02
0.02207961 = product of:
0.04415922 = sum of:
0.04415922 = product of:
0.08831844 = sum of:
0.08831844 = weight(_text_:r in 1942) [ClassicSimilarity], result of:
0.08831844 = score(doc=1942,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.5851765 = fieldWeight in 1942, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.125 = fieldNorm(doc=1942)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Dewey, M.: Decimal classification beginnings (1990)
0.02
0.018531853 = product of:
0.037063707 = sum of:
0.037063707 = product of:
0.07412741 = sum of:
0.07412741 = weight(_text_:22 in 3554) [ClassicSimilarity], result of:
0.07412741 = score(doc=3554,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.46428138 = fieldWeight in 3554, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=3554)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 25.12.1995 22:28:43
-
Mölgaard-Hansen, R.: From knowledge classification to library classification (1978)
0.02
0.016559707 = product of:
0.033119414 = sum of:
0.033119414 = product of:
0.06623883 = sum of:
0.06623883 = weight(_text_:r in 1808) [ClassicSimilarity], result of:
0.06623883 = score(doc=1808,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.4388824 = fieldWeight in 1808, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.09375 = fieldNorm(doc=1808)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Studwell, W.E.; Wang, R.; Wu, H.: Ideological influences on book classification schemes in the People's Republic of China (1994)
0.01
0.011039805 = product of:
0.02207961 = sum of:
0.02207961 = product of:
0.04415922 = sum of:
0.04415922 = weight(_text_:r in 900) [ClassicSimilarity], result of:
0.04415922 = score(doc=900,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.29258826 = fieldWeight in 900, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0625 = fieldNorm(doc=900)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Rayward, W.B.: ¬The origins of information science and the International Institute of Bibliography / International Federation for Information and Documentation (FID) (1997)
0.01
0.010810248 = product of:
0.021620495 = sum of:
0.021620495 = product of:
0.04324099 = sum of:
0.04324099 = weight(_text_:22 in 75) [ClassicSimilarity], result of:
0.04324099 = score(doc=75,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.2708308 = fieldWeight in 75, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=75)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- International forum on information and documentation. 22(1997) no.2, S.3-15
-
Broughton, V.: Henry Evelyn Bliss : the other immortal or a prophet without honour? (2008)
0.01
0.010810248 = product of:
0.021620495 = sum of:
0.021620495 = product of:
0.04324099 = sum of:
0.04324099 = weight(_text_:22 in 2550) [ClassicSimilarity], result of:
0.04324099 = score(doc=2550,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.2708308 = fieldWeight in 2550, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=2550)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 9. 2.1997 18:44:22
-
Heuvel, C. van den: Multidimensional classifications : past and future conceptualizations and visualizations (2012)
0.01
0.010810248 = product of:
0.021620495 = sum of:
0.021620495 = product of:
0.04324099 = sum of:
0.04324099 = weight(_text_:22 in 632) [ClassicSimilarity], result of:
0.04324099 = score(doc=632,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.2708308 = fieldWeight in 632, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=632)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 2.2013 11:31:25
-
Foskett, D.J.: ¬'A rustic in the library' : The first Dr. Pafford Memorial Lecture (1997)
0.01
0.009265927 = product of:
0.018531853 = sum of:
0.018531853 = product of:
0.037063707 = sum of:
0.037063707 = weight(_text_:22 in 538) [ClassicSimilarity], result of:
0.037063707 = score(doc=538,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.23214069 = fieldWeight in 538, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=538)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 9. 2.1997 18:44:22
-
Barat, A.H.: Hungarians in the history of the UDC (2014)
0.01
0.009265927 = product of:
0.018531853 = sum of:
0.018531853 = product of:
0.037063707 = sum of:
0.037063707 = weight(_text_:22 in 1429) [ClassicSimilarity], result of:
0.037063707 = score(doc=1429,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.23214069 = fieldWeight in 1429, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=1429)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
-
LaBarre, K.: Bliss and Ranganathan : synthesis, synchronicity our sour grapes? (2000)
0.01
0.0082798535 = product of:
0.016559707 = sum of:
0.016559707 = product of:
0.033119414 = sum of:
0.033119414 = weight(_text_:r in 88) [ClassicSimilarity], result of:
0.033119414 = score(doc=88,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.2194412 = fieldWeight in 88, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=88)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- The concerns of the past century follow us into the next. Despite continuing technological advancement we find ourselves overwhelmed by a virtual tidal wave of information. Instead of reinventing seemingly novel solutions, it is appropriate to reexamine the successes and failures of the past. In light of the increasing focus on faceted classification as a potential approach to the problems of organizing conceptual space, it is appropriate to direct critical attention to the convoluted nature of the interaction between Henry Evelyn Bliss and S. R. Ranganathan. Drawing upon the methods of historiography, this is a review of original documents and an analysis of primary examples drawn from the correspondence between Ranganathan and Bliss currently in possession of the Rare Book and Manuscript Library, Columbia University and Archives and Special Collections at the Morris Raphael Cohen Library, City College of New York. This analysis will serve as a springboard to further exploration of the synthetic nature of faceted classification
-
Beghtol, C.: Exploring new approaches to the organization of knowledge : the subject classification of James Duff Brown (2004)
0.01
0.0082798535 = product of:
0.016559707 = sum of:
0.016559707 = product of:
0.033119414 = sum of:
0.033119414 = weight(_text_:r in 869) [ClassicSimilarity], result of:
0.033119414 = score(doc=869,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.2194412 = fieldWeight in 869, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=869)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- James Duff Brown was an influential and energetic librarian in Great Britain in the late nineteenth and early twentieth centuries. His Subject Classification has characteristics that were unusual and idiosyncratic during his own time, but his work deserves recognition as one of the precursors of modern bibliographic classification systems. This article discusses a number of theories and classification practices that Brown developed. In particular, it investigates his views on the order of main classes, on the phenomenon of "concrete" subjects, and on the need for synthesized notations. It traces these ideas briefly into the future through the work of S. R. Ranganathan, the Classification Research Group, and the second edition of the Bliss Bibliographic Classification system. It concludes that Brown's work warrants further study for the light it may shed on current classification theory and practice.
-
Sales, R. de; Pires, T.B.: ¬The classification of Harris : influences of Bacon and Hegel in the universe of library classification (2017)
0.01
0.0082798535 = product of:
0.016559707 = sum of:
0.016559707 = product of:
0.033119414 = sum of:
0.033119414 = weight(_text_:r in 3860) [ClassicSimilarity], result of:
0.033119414 = score(doc=3860,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.2194412 = fieldWeight in 3860, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=3860)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Krishnamurthy, M.; Satija, M.P.; Martínez-Ávila, D.: Classification of classifications : species of library classifications (2024)
0.01
0.0082798535 = product of:
0.016559707 = sum of:
0.016559707 = product of:
0.033119414 = sum of:
0.033119414 = weight(_text_:r in 1158) [ClassicSimilarity], result of:
0.033119414 = score(doc=1158,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.2194412 = fieldWeight in 1158, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=1158)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Acknowledging the importance of classification not only for library and information science but also for the study and mapping of the world phenomena, in this paper we revisit and systematize the main types of classifications and focus on the species of classification mainly drawing on the work of S. R. Ranganathan. We trace the evolution of library classification systems by their structures and modes of design of various shades of classification systems and make a comparative study of enumerative and faceted species of library classifications. The value of this paper is to have a picture of the whole spectrum of existing classifications, which may serve for the study of future developments and constructions of new systems. This paper updates previous works by Comaromi and Ranganathan and is also theoretically inspired by them.
-
Dousa, T.M.: ¬The simple and the complex in E. C. Richardson's theory of classification : observations on an early KO model of the relationship between ontology and epistemology (2010)
0.01
0.0077216057 = product of:
0.015443211 = sum of:
0.015443211 = product of:
0.030886423 = sum of:
0.030886423 = weight(_text_:22 in 3509) [ClassicSimilarity], result of:
0.030886423 = score(doc=3509,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.19345059 = fieldWeight in 3509, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=3509)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Pages
- S.15-22
-
Satija, M.P.: Abridged Dewey-15 (2012) in historical perspectives (2012)
0.01
0.0077216057 = product of:
0.015443211 = sum of:
0.015443211 = product of:
0.030886423 = sum of:
0.030886423 = weight(_text_:22 in 116) [ClassicSimilarity], result of:
0.030886423 = score(doc=116,freq=2.0), product of:
0.15966053 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045593463 = queryNorm
0.19345059 = fieldWeight in 116, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=116)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 3. 3.2016 18:59:22
-
Green, R.: Facet analysis and semantic frames (2017)
0.01
0.006899878 = product of:
0.013799756 = sum of:
0.013799756 = product of:
0.027599512 = sum of:
0.027599512 = weight(_text_:r in 3849) [ClassicSimilarity], result of:
0.027599512 = score(doc=3849,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.18286766 = fieldWeight in 3849, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0390625 = fieldNorm(doc=3849)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Bliss, H.E.: ¬A bibliographic classification : principles and definitions (1985)
0.01
0.0055199023 = product of:
0.011039805 = sum of:
0.011039805 = product of:
0.02207961 = sum of:
0.02207961 = weight(_text_:r in 3621) [ClassicSimilarity], result of:
0.02207961 = score(doc=3621,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.14629413 = fieldWeight in 3621, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.03125 = fieldNorm(doc=3621)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Henry Evelyn Bliss (1870-1955) devoted several decades of his life to the study of classification and the development of the Bibliographic Classification scheme while serving as a librarian in the College of the City of New York. In the course of the development of the Bibliographic Classification, Bliss developed a body of classification theory published in a number of articles and books, among which the best known are The Organization of Knowledge and the System of the Sciences (1929), Organization of Knowledge in Libraries and the Subject Approach to Books (1933; 2nd ed., 1939), and the lengthy preface to A Bibliographic Classification (Volumes 1-2, 1940; 2nd ed., 1952). In developing the Bibliographic Classification, Bliss carefully established its philosophical and theoretical basis, more so than was attempted by the makers of other classification schemes, with the possible exception of S. R. Ranganathan (q.v.) and his Colon Classification. The basic principles established by Bliss for the Bibliographic Classification are: consensus, collocation of related subjects, subordination of special to general and gradation in specialty, and the relativity of classes and of classification (hence alternative location and alternative treatment). In the preface to the schedules of A Bibliographic Classification, Bliss spells out the general principles of classification as weIl as principles specifically related to his scheme. The first volume of the schedules appeared in 1940. In 1952, he issued a second edition of the volume with a rewritten preface, from which the following excerpt is taken, and with the addition of a "Concise Synopsis," which is also included here to illustrate the principles of classificatory structure. In the excerpt reprinted below, Bliss discusses the correlation between classes, concepts, and terms, as weIl as the hierarchical structure basic to his classification scheme. In his discussion of cross-classification, Bliss recognizes the "polydimensional" nature of classification and the difficulties inherent in the two-dimensional approach which is characteristic of linear classification. This is one of the earliest works in which the multidimensional nature of classification is recognized. The Bibliographic Classification did not meet with great success in the United States because the Dewey Decimal Classification and the Library of Congress Classification were already weIl ensconced in American libraries by then. Nonetheless, it attracted considerable attention in the British Commonwealth and elsewhere in the world. A committee was formed in Britain which later became the Bliss Classification Association. A faceted edition of the scheme has been in preparation under the direction of J. Mills and V. Broughton. Several parts of this new edition, entitled Bliss Bibliographic Classification, have been published.
-
Dewey, M.: Decimal classification and relativ index : introduction (1985)
0.01
0.0055199023 = product of:
0.011039805 = sum of:
0.011039805 = product of:
0.02207961 = sum of:
0.02207961 = weight(_text_:r in 3628) [ClassicSimilarity], result of:
0.02207961 = score(doc=3628,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.14629413 = fieldWeight in 3628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.03125 = fieldNorm(doc=3628)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- To those outside the field of library science, the name Melvil Dewey (1851-1931) is virtually synonymous with library classification. To those in the field, Dewey has been recognized as the premier classification maker. His enormously successful system (i.e., successful in terms of the wide adoption of the system around the world for over one hundred years) has now undergone nineteen editions. The Dewey Decimal Classification has been translated into more than twenty languages and is the most widely adopted classification scheme in the world. Even in its earliest manifestations, the Dewey Decimal Classification contained features that anticipated modern classification theory. Among these are the use of mnemonics and the commonly applied standard subdivisions, later called "common isolates" by S. R. Ranganathan (q.v.), which are the mainstays of facet analysis and synthesis. The device of standard subdivisions is an indication of the recognition of common aspects that pervade all subjects. The use of mnemonics, whereby recurring concepts in the scheme are represented by the same notation, for example, geographic concepts and language concepts, eased the transition of the Dewey Decimal Classification from a largely enumerative system to an increasingly faceted one. Another significant feature of the Dewey Decimal Classification is the use of the hierarchical notation based an the arabic numeral system. To a large extent, this feature accounts for the wide use and success of the system in the world across language barriers. With the prospect of increasing online information retrieval, the hierarchical notation will have a significant impact an the effectiveness of the Dewey Decimal Classification as an online retrieval tool. Because the notation is hierarchical, for example, with increasing digits in a number representing narrower subjects and decreasing digits indicating broader subjects, the Dewey Decimal Classification is particularly useful in generic searches for broadening or narrowing search results. In the preface to the second edition of his Decimal Classification Dewey explained the features of his "new" system. The excerpt below presents his ideas and theory concerning the rational basis of his classification, the standard subdivisions, the hierarchical notation based an decimal numbers, the use of mnemonics, the relative index, and relative location. It also reflects Dewey's lifelong interest in simplified spelling.
-
Kaiser, J.O.: Systematic indexing (1985)
0.01
0.0055199023 = product of:
0.011039805 = sum of:
0.011039805 = product of:
0.02207961 = sum of:
0.02207961 = weight(_text_:r in 571) [ClassicSimilarity], result of:
0.02207961 = score(doc=571,freq=2.0), product of:
0.15092614 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.045593463 = queryNorm
0.14629413 = fieldWeight in 571, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.03125 = fieldNorm(doc=571)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- A native of Germany and a former teacher of languages and music, Julius Otto Kaiser (1868-1927) came to the Philadelphia Commercial Museum to be its librarian in 1896. Faced with the problem of making "information" accessible, he developed a method of indexing he called systematic indexing. The first draft of his scheme, published in 1896-97, was an important landmark in the history of subject analysis. R. K. Olding credits Kaiser with making the greatest single advance in indexing theory since Charles A. Cutter and John Metcalfe eulogizes him by observing that "in sheer capacity for really scientific and logical thinking, Kaiser's was probably the best mind that has ever applied itself to subject indexing." Kaiser was an admirer of "system." By systematic indexing he meant indicating information not with natural language expressions as, for instance, Cutter had advocated, but with artificial expressions constructed according to formulas. Kaiser grudged natural language its approximateness, its vagaries, and its ambiguities. The formulas he introduced were to provide a "machinery for regularising or standardising language" (paragraph 67). Kaiser recognized three categories or "facets" of index terms: (1) terms of concretes, representing things, real or imaginary (e.g., money, machines); (2) terms of processes, representing either conditions attaching to things or their actions (e.g., trade, manufacture); and (3) terms of localities, representing, for the most part, countries (e.g., France, South Africa). Expressions in Kaiser's index language were called statements. Statements consisted of sequences of terms, the syntax of which was prescribed by formula. These formulas specified sequences of terms by reference to category types. Only three citation orders were permitted: a term in the concrete category followed by one in the process category (e.g., Wool-Scouring); (2) a country term followed by a process term (e.g., Brazil - Education); and (3) a concrete term followed by a country term, followed by a process term (e.g., Nitrate-Chile-Trade). Kaiser's system was a precursor of two of the most significant developments in twentieth-century approaches to subject access-the special purpose use of language for indexing, thus the concept of index language, which was to emerge as a generative idea at the time of the second Cranfield experiment (1966) and the use of facets to categorize subject indicators, which was to become the characterizing feature of analytico-synthetic indexing methods such as the Colon classification. In addition to its visionary quality, Kaiser's work is notable for its meticulousness and honesty, as can be seen, for instance, in his observations about the difficulties in facet definition.
