Brian Campbell Vickery - Classification Quotes

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In science there are uses many classifications of entities - plants, animals, rocks, soils, stars, diseases, occupations, and so on. In these taxonomies a classification must display genetic relations - for example, an evolutionary family tree of animal species - but its prime purpose is to aid in the identification of entities... Classification enables us to select, from the whole universe of known entities, the one that best matches one newly encountered.

Brian Campbell Vickery
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 Classification Research Group 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
The classification of subject matter may be carried out for all sort of special purposes - to arrange books on shelves, to group inventions in patents, to classify the raw materials, intermediates and products of importance to a particular manufacturer, and so on. All such arrangements have their particular uses and their particular problems.

Brian Campbell Vickery
The structure if a fully developed classification can be technically described in the following way:
(1) The whole collection (universe) of entities (in this case subject terms) may be divided into a series of fields...
(2) Each field may be divided into a series of facets...
(3) Each facet may be structured into a hierarchy, subdivided stage by stage into a series of characteristics...
(4) Rules may be provided for combining (coordinating) terms...
(5) Each field, facet and term may be coded to fix its position in the whole system...
(6)An alphabetical index to the terms, facets and fields may be provided, showing the code of each

Brian Campbell Vickery
History presents a series of cultural epochs. Each is a span of years within which knowledge presents a more or less unified structure which can be expressed in a classification, but each new epoch requires a new classification.

Brian Campbell Vickery
Classification in its simplest terms, means putting together things or ideas that are alike, and keeping separate those that are different.

Brian Campbell Vickery
The most important characteristic of documentary classification is that it is concerned with subjects, not just entities of taxonomic classification. What is the nature of the specific subjects - the themes on which books, parts of books, articles or parts of articles are written? A study of book titles alone would suggest that literary subjects have simple names like 'War, Religion', 'Boats', 'Musica; pitch', 'Colour', 'Acridines', 'Wild flowers', and so on. But the study of articles on the documentation level reveals that such titles are simple in appearance only. Such a literary subject is in reality a complex aggregate of specific subjects, eahc which is the main theme discussed from one particular aspect.

Brian Campbell Vickery
After my first encounter with Colon Classification in the Patent Office, and subsequent use of the Universal Decimal Classification (UDC) for the Akers library, I became increasingly interested in problems of information organisation for retrieval. My first paper in the field was "The Structure of a Connective Index" (Vickery, 1950).

Brian Campbell Vickery
The scope of a specialised documentary classification is usually designated by its title, the subject field that it professes to classify. It is no easy task to state what is meant by a subject field. In general it can be expressed as Thing-Activity. A definable group of things... is selected, and from the many relations in which they subsist a certain number are selected as relevant.

Brian Campbell Vickery
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
Scientific information is faced with the following problem. On the one hand, we have the world's literature of science and technology, past and present, in many languages; on the other, and enquirer with a question. How to select, from a vast mass of words, the few that are the most closely relevant to an enquiry? It is this selection process that makes use of classification.

Brian Campbell Vickery
The development of information research has increased considerably the interaction of emerging information science with other disciplines. Librarianship has traditionally had links with education and classification and has drawn ideas from logic and philosophy. But during the last fifty years new insights and methods have been derived from sociology and social psychology, from computer science, from operations research and related quantitative approaches, from communications research, from linguistics, and most recently from the new hybrids: cognitive science and artificial intelligence.

Brian Campbell Vickery
The analogy with bibliographic classifications and thesauri is obvious... despite the differences, it is to be regretted that 'ontological engineers' make little or no reference to work in information science. As a consequence, they do not appear to draw at all on the rich experience of constructing knowledge schedules … or... developing concept lexicons.

Brian Campbell Vickery
The structural tools developed by the profession – hierarchical classifications, facets, thesaural relations, topic maps, the predicates used in ontology – will still be of use, provided that they can in each case pass a test of utility.

Brian Campbell Vickery
The basic rules of classification are
- Each characteristic of division must produce at least two classes
- Only one principle of division must be used at a time, to produce mutually exclusive classes.
- The species of any genius must be completely exhaustive of their parent class.

Brian Campbell Vickery