Search (38 results, page 1 of 2)

  • × year_i:[1950 TO 1960}
  1. Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1952) 0.01 
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    Abstract
    In distinction to current Theory of Communication which treats amount of information as a measure of the statistical rarity of a message, a Theory of Semantic Information is outlined, in which the concept of information carried by a sentence within a given language system is treated as synonymous with the content of this sentence, normalized in a certain way, and the concept of amount of semantic information is explicated by various measures of this content, all based on logical probability functions ranging over the contents. Absolute and relative measures are distinguished, so are D-functions suitable for contexts where deductive reasoning alone is relevant and I-functions suitable for contexts where inductive reasoning is adequate. Of the two major types of amount of information investigated, the one, cont, is additive with respect to sentences whose contents are exclusive, the other, inf, with respect to sentences which are inductively independent. The latter turns out to be formally analogous to the customary information measure function. Various estimate functions of amount of information are investigated leading to generalized semantic correlates of concepts and theorems of current Communication Theory. A concept of semantic noise is tentatively defined, so are efficiency and redundancy of the conceptual framework of a language system. It is suggested that semantic information is a concept more readily applicable to psychological and other investigations than its communicational counterpart.
    Theme
    Information
  2. Wiener, N.: ¬The human use of human beings : cybernetics and society (1950) 0.01 
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    Date
    8. 7.2000 18:17:22
    Theme
    Information
  3. Clason, W.E.: ¬Die Klassifizierung der Literatur nach dem System der gleichwertigen Grundbegriffe (UNITERM-System) : ein Erfahrungsbericht aus der Praxis (1957) 0.01 
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  4. Kluth, R.: System - Notation - Leitkarten (1955) 0.01 
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  5. ¬Das Oxford-System der Dezimal-Klassifikation für Forstwesen (Forst- und Holzwirtschaft) (1957) 0.01 
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  6. Taube, M.: ¬The uniterm system of indexing operating manual (1955) 0.01 
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  7. Orvig, M.: ¬The reader interest arrangement : an american shelving system with a future (1955) 0.01 
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  8. Mogk, H.: System und Schlagwort : Erfahrungen am Fachkatalog der Universitätsbibliothek Leipzig (1954) 0.00 
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  9. Jackson, I.H.: Advantages and disadvantages of a Subject System of Classification as a key to a depository collection (1951) 0.00 
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  10. Kreithen, A.; Gull, C.D.; Miller, E.E.: Klassifizierung nach dem System gleichwertiger Grundbegriffe (Uniterm) (1954) 0.00 
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  11. Walker, R.S.: Problem child : some observations on fiction, with a sketch of a new system of classification (1958) 0.00 
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  12. MacKay, D.M.: Quantal aspects of information (1950) 0.00 
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    Theme
    Information
  13. ¬The Role of classification in the modern American library : papers presented at an institute conducted by the University of Illinois Graduate School of Library Science, 1.-4.11.1959 (1959) 0.00 
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    Date
    3.10.2000 10:22:59
  14. Ranganathan, S.R.: Elements of library classification (1959) 0.00 
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    Abstract
    A medium-length book, based on lectures, aimed at classificationists, not cataloguers or classifiers. Ranganathan begins with his Five Laws and a definition of classification and its purposes. He gives a list of 108 subjects in "unhelpful alphabetical sequence" and shows how they can be grouped into subjects, and then how each each subject's terms can be organized in a helpful and useful way, thereby demonstrating and building up his basic canons, postulates, and principles of classification. All of that, roughly the first half of the book, will be of interest to anyone starting to make classification systems. It has all of what makes Ranganathan's work so delightful to read: his unending concern for the user, his deep thought, and his warmth, humour, and spirituality. The second half of the book, however, has what can make his work difficult: his unyielding belief that the Colon Classification is the only system worth using. The reader will not be very interested in repeatedly classifying books under various systems and then reversing the process to see how closely the call number matches the subject. However, the reader can take the ideas so clearly presented in the first half of the book and then veer off to build his or her own system, while remembering that if his classification laws are likened to Euclid's laws of geometry, there is no room for a Riemann or Lobachevksy in Ranganathan's strict world.
  15. Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1953) 0.00 
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    Theme
    Information
  16. Miller, G.A.: ¬The magical number, seven plus or minus two : some limits on our capacity for processing information (1956) 0.00 
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    Theme
    Information
  17. Zemanek, H.: Elementare Informationstheorie (1959) 0.00 
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    LCSH
    Information theory
    Subject
    Information theory
    Theme
    Information
  18. Shera, J.H.: Pattern, structure, and conceptualization in classification for information retrieval (1957) 0.00 
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    Source
    Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957
  19. Joyce, T.; Needham, R.M.: ¬The thesaurus approach to information retrieval (1958) 0.00 
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    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgang Kaufmann 1997. S.15-20.
  20. Mooers, C.N.: ¬A mathematical theory of language symbols in retrieval (1959) 0.00 
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    Source
    Proceedings of the International Conference on Scientific Information

Authors

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  • m 6
  • s 2
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