Search (29 results, page 2 of 2)

  • × type_ss:"a"
  • × year_i:[1960 TO 1970}
  1. Goltz, M.: Aufgaben und Probleme der Informationstätigkeit allgemeiner Bibliotheken (1966) 0.01
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  2. Jonzeck, M.: Leistungsmöglichkeiten der allgemeinen öffentlichen Bibliotheken bei der Informationstätigkeit (1967) 0.01
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  3. Herner, S.; Herner, M.: Information needs and uses in science and technology (1967) 0.01
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  4. Scheele, M.: Schlagwörter als Sachverhaltsschwerpunkte (1962) 0.01
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  5. Ardenne, M. von; Reball, S.: ¬Die Dokumentenflut und die Wege zur Überwindung der gegenwärtigen Informationskrise (1969) 0.01
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  6. Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966) 0.01
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    Source
    Journal of documentation. 22(1966), S.203-209
  7. Soergel, D.: Mathematical analysis of documentation systems : an attempt to a theory of classification and search request formulation (1967) 0.01
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    Abstract
    As an attempt to make a general structural theory of information retrieval, a documentation system (DS) is defined as a formal system consisting of (a) a set o of objects (documents); (b) a set A++ of elementary attributes (key-words), from which further attributes may be constructed: A++ generates A; (c) a set of axioms of the form X++(x)=m (m¯M, M a set of constant connecting attributes with objects: from the axioms further theorems (=true statements) may be constructed. By use of the theorems, different mappings O -> P(o) (P(o) set of all subsets of o) (search question -> set of documents retrieved) are defined. The type of a DS depends on two basic decisions: (1) choice of the rules for the construction of attributes and theorems, e.g., logical product in coordinate indexing; links. (2) choice of M; M may consist of the two constants 'applicable' and 'not applicable', or some positive integers, ...; Further practical decisions: A++ hierarchical or not; kind of mapping; introduction of roles (=further attributes). The most simple case - ordinary two-valued Coordinate Indexing - is discusssed in detail; o is a free distributive (but not Boolean) lattice, the homographic image a ring of subsets of o; instead of negation which is not useful, a useful retrieval operation 'praeternagation' is introduced. Furthermore these are discussed: a generalized definition of superimposed coding, some functions for the distance of objects or attributes; optimization and automatic derivation of classifications. The model takes into account term-term relations and document-document relations. It may serve as a structural framework in terms of which the functional problems of retrieval theory may be expressed more clearly
  8. Casagrande, J.B.; Hale, K.L.: Semantic relations in Papago folk definitions (1967) 0.01
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    Footnote
    Zitiert in: Evens, M.: Thesaural relations in information retrieval. In: The semantics of relationships: an interdisciplinary perspective. Eds: R. Green u.a. Dordrecht: Kluwer 2002. S.143-160.
  9. Scheele, M.: Thesaurus : Baustein jeder Fachdokumentation (1964) 0.01
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