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  • × year_i:[1970 TO 1980}
  • × type_ss:"d"
  1. Engelien, G.: ¬Der Begriff der Klassifikation (1971) 0.01 
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  2. Tahani, V.: ¬A general conceptual framework for information retrieval systems (1972) 0.00 
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    Abstract
    Develops a conceptual framework for information retrieval systems which admit of imprecision in the form of fuzziness in document characterization, retrieval rules, and file structures. A mathematical model for such systems, based on the theory of fuzzy sets, is introduced
  3. Schabas, A.H.: ¬A comparative evaluation of the retrieval effectiveness of titles, Library of Congress Subject Headings and PRECIS strings for computer searching of UK MARC data (1979) 0.00 
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