“Biological classifications have two major objectives: to serve as a basis of biological generalizations in all sort of comparative studies and to serve as a key to an information storage system… Is the classification that is soundest as a basis of generalizations also most convenient for information retrieval? This, indeed, seems to have been true in most cases I have encountered.”

—  Ernst Mayr

Mayr (1981) as cited in: C. Gnoli (2011) "Ontological foundations in knowledge organization: the theory of integrative levels applied in citation order". Scire actas. 17-1

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Ernst Mayr 8
German-American Evolutionary Biologist 1904–2005

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“The preface to the first edition of this book… shows that in 1958 the classification ideas in it were felt to controversial, needing to be championed. A few years before, the had issued a memorandum proclaiming "the need for a faceted classification as the basis of all methods of information retrieval'. As part-author of this memorandum, I must now judge the claim to have been too bold, even brash.”

Brian Campbell Vickery (1918–2009) British information theorist

Preface to third edition; Partly cited in: Vanda Broughton (2011) " Brian Vickery and the Classification Research Group: the legacy of faceted classification http://www.iskouk.org/conf2011/papers/broughton.pdf" p. 6
Classification and indexing in science (1958)

“The Classification Research Group (C. R. G.) in London has been discussing for some years the theory of documentary classification, and several papers have been published which reflect the course of the discussions (1–8). Beginning with an explicit disavowal of allegiance to any one published system, the Group has considered the well-known schemes, both general and special, and the work being published by those in other countries who have also been studying the subject theoretically. It has not, unfortunately, had the opportunity so far of seeing the system developed in the U. S. S. R. on the basis of the philosophy of dialectical materialism.
While the Group has not been particularly satisfied with the development of the Colon Classification itself, we have nevertheless come to the conclusion that the method of facet analysis, first used systematically by S. R. Ranganathan, though sometimes occurring previously as it were by intuition, should form the basis of all forms of information retrieval.”

Douglas John Foskett (1918–2004)

Foskett (1959) "The Construction of a Faceted Classification for a Special Subject" in: Proceedings of the International Conference on Scientific Information. p. 867

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“There is another and very important ground for standardization and that is the desirability of having parts interchangeable. Standards of exchange have long been in general use, and these have, most usually, been fixed with a view to convenient use rather than on a scientific basis. The units of weight and measure are examples of this form of standard. They may not even be the most logical, or most convenient, but once established they can, in general, be changed only by slow degrees, if at all.”

Dexter S. Kimball (1865–1952) American engineer

Source: Principles of industrial organization, 1913, p. 42

“Though the sex class system may have originated in fundamental biological conditions, this does not guarantee once the biological basis of their oppression has been swept away that women and children will be freed.”

Shulamith Firestone book The Dialectic of Sex

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“Information retrieval is the name for the process or method whereby a prospective user of information is able to convert his need for information into an actual list of citations to documents in storage containing information useful to him. It is the finding or discovery process with respect to stored information. It is another, more general, name for the production of a demand bibliography. Information retrieval embraces the intellectual aspects of the description of information and its specification for search, and also whatever systems, technique, or machines that are employed to carry out the operation. Information retrieval is crucial to documentation and organization of knowledge.”

Calvin Mooers (1919–1994) American computer scientist

Calvin Mooers (1951) "Zatocoding applied to mechanical organization of knowledge." American Documentation, 2, p. 25; Cited in: Birger Hjørland (2006) " Information retrival (IR) http://www.iva.dk/bh/Core%20Concepts%20in%20LIS/articles%20a-z/information_retrieval.htm" on iva.dk.

“An information retrieval system will tend not to be used whenever it is more painful and troublesome for a customer to have information than for him not to have it… Where an information retrieval system tends not to be used, a more capable information retrieval system may tend to be used even less.”

Calvin Mooers (1919–1994) American computer scientist

Calvin Mooers (1959) Mooers' law: or, why some retrieval systems are used and others are not. p. 138

“Classification in documentation is a tool for selection. It is essentially a 'finding system' for subject items… It is an artificial language, designed as a tool to aid in the selection of information from a store in response to search questions. The classification serves to standardise subject description, so that the description of a subject used by indexer and inquirer are more likely to coincide, thus maximising the probability of finding all items relevant to an inquiry.”

Brian Campbell Vickery (1918–2009) British information theorist

Source: Classification and indexing in science (1958), Chapter 1: The need for classification, p. 12-13.

“Four basic operations in the effective use of graphic records (documents), to store information and make it available, have been listed by Hyslop: A, recording information in documents; B, storing recorded information—documentary items; C, identifying items containing information relevant to a given problem, situation, or subject; D, providing the identified items from storage. Information storage and retrieval in the wide sense covers all these operations. In the narrow sense used in this paper, information retrieval means only C, identifying documentary items by subject.”

Brian Campbell Vickery (1918–2009) British information theorist

Source: The Structure of Information Retrieval Systems (1959), p. 1275.

“Reality, in its quantitative aspect, must be considered as a system of populations… The general study of the equilibria and dynamics of populations seems to have no name; but as it has probably reached its highest development in the biological study known as 'ecology,' this name may well be given to it.”

Kenneth E. Boulding (1910–1993) British-American economist

Source: 1950s, A Reconstruction of Economics, 1950, p. 5. as cited in: Robert A. Solow (1994) " Kenneth Ewart Boulding: 1910-1993. An Appreciation http://www.jstor.org/stable/4226892". In: Journal of Economic Issues. Vol. 28, No. 4 (Dec., 1994), pp. 1187-1200

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“It has seemed to me that the theory (calcul) of probabilities ought to serve as the basis for the study of all the sciences, and particularly of the sciences of observation.”

Adolphe Quetelet (1796–1874) Belgian astronomer, mathematician, statistician and sociologist

Instructions populaires sur le calcul des probability (1825) English translation by R. Beamish (1839)

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