Search (41 results, page 1 of 3)

  • × year_i:[1960 TO 1970}
  1. Schön, J.: Zum Gedenken an Paul Otlet : 1868-1944 (1968) 0.11 
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    Source
    DK-Mitteilungen. 13(1968) Nr.6, S.21-22
  2. Mooers, C.: ¬The indexing language of an information retrieval system (1963) 0.07 
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    Pages
    S.21-36
    Source
    Information retrieval today: papers presented at an Institute conducted by the Library School and the Cetre for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by. Wesley Simonton
  3. Rübesame, O.: Probleme des geographischen Schlüssels (1963) 0.04 
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    Date
    17. 1.1999 13:22:22
  4. Soergel, D.: Mathematical analysis of documentation systems : an attempt to a theory of classification and search request formulation (1967) 0.04 
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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
  5. Zadeh, L.A.: Fuzzy sets (1965) 0.04 
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    Abstract
    A fuzzy set is a class of objects with a continuum of grades of membership. Such a set is characterized by a membership (characteristic) function which assigns to each object a grade of membership ranging between zero and one. The notions of inclusion, union, intersection, complement, relation, convexity, etc., are extended to such sets, and various properties of theses notions in the context of fuzzy sets are established. In particular, a separation theorem for convex fuzzy sets is proved without requiring that the fuzzy sets be disjoint
  6. Bibliothekarisch-bibliographische Klassifikation. Tafeln für wissenschaftliche Bibliotheken (1967 ff.) 0.03 
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    Content
    1. Einführung (1978) 2. A. Marxismus-Leninismus (1969) 3. B. Naturwissenschaften insgesamt. V. Physikalisch-math. Wissenschaften (1968) 4. Chemische Wissenschaften (1967) 5. D. Geowissenschaften. Geodäsie, Geophysik, Geologie u. Geographie (1972) 6. E. Biologische Wissenschaften (1969) 7,1 Z. Technik. Technische Wissenschaften insgesamt (1972) 7,2 Z. Energetik. Hochfrequenzelektronik (1974) 8. I. Bergbau K. Technologie der Metalle, Maschinen- u. Gerätebau (1987) 9,1 L. Chemische Technologie. Chemische und Nahrungsmittelproduktion (Halbband 1.2. 1972) 9,2 M. Holztechnologie.Leichtindustrie. Polygraphische Industrie. Photokinotechnik (1980) 10. N. Bauwesen (1985) 11. O. Transport (Halbband 1.2. 1973) 12. P. Land- und Forstwirtschaft. Landwirtschaftliche und forstwissen-schaftliche Wissenschaften (1968) 14,1 S. Gesellschaft-wissenschaften insgesamt. T 0/2. Geschichte. Historische Wissenschaften (Allg. Teil 1970) 14,2 T 3(2) Geschichte der UdSSR (1974) 14,3 S. Gesellschaftswissenschaften insgesamt. T 3 (4/9). Geschichte der Länder außerhalb der Sowjetunion (1971) 14,4 T. Archäologie. Ethnographie (1986) 15. U. Wirtschaft. Wirtschaftswiss. (Textband 1.2 1985) 15. U. Wirtschaft.Wirtschaftswissenschaften (Register 1985) 16. F 6/7 Politische Parteien. Geselschaftliche Organisationen (Textband 1.2 1977) 16. F 6/7 Politische Parteien. Gesellschaftliche Organisationen (Register 1977) 17. Ch. Staat und Recht. Rechts-wissenschaft (1978) 18. C. Militärwissenschaft. Militärwesen (1978) 19. C. Kultur. Wissenschaft, Bildung (1972) 20. S. Philologische Wissenschaften. Schöne Literatur (1985) 21. Sc Kunst. Kunstwissenschaft (1968) 22. E. Religion. Atheismus (1976) 23. Ju. Philosphische Wissenschaften. Psychologie (1973) 24. Ja. Literatur universalen Inhalts (1967) 25. Hilfstafeln (1967)
  7. Fill, K.: ¬Die Dezimalklassifikation im allgemeinen und in Deutschland (1967) 0.03 
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    Source
    DK-Mitteilungen. 12(1967) Nr.5, S.19-22
  8. Meyer-Uhlenried, K.H.: Ordnungsprinzipien der Speicherung in der Dokumentation (1965) 0.03 
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    Source
    Nachrichten für Dokumentation. 16(1965), S.18-22
  9. Mann, G.: ¬Der Systematische Katalog in Institutionsbibliotheken am Beispiel der Medizinhistorik (1962) 0.03 
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    Date
    3.10.2000 10:22:29
  10. Chomsky, N.: Aspects of the theory of syntax (1965) 0.03 
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    Date
    6. 1.1999 10:29:22
  11. Hockett, C.F.: ¬The problem of universals in language (1963) 0.03 
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    Pages
    S. 1-22
  12. Jonzeck, M.: ¬Die Aktivierung, Verbesserung und Neuorientierung der Informationstätigkeit der allgemeinen öffentlichen Bibliotheken (1965) 0.03 
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    Source
    Bibliothekar. 19(1965), S.15-22
  13. Reblin, B.: ¬Die neue "Systematik für Allgemeinbildende Bibliotheken" (1963) 0.03 
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    Date
    5. 8.1999 15:16:22
  14. Schwarz, L.: Informationsaufgaben der allgemeinen öffentlichen Bibliotheken (1967) 0.03 
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    Bibliothekar. 21(1967), S.11-14
  15. Schulte-Tigges, F.: ¬Die Anwendung elektronischer datenverarbeitender Maschinen in einzelnen Bereichen des Bibliothekswesens (1963) 0.03 
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    Date
    3.10.2000 21:09:21
  16. Wüster, E.: ¬Die Einführung der Perreaultschen Beziehungszeichen in die DK (1969) 0.02 
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    DK-Mitteilungen. 14(1969), S.15-21
  17. Barnes, R.C.M.: Information user studies : pt.2: comparison of some recent surveys (1965) 0.02 
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    Journal of documentation. 21(1965), S.169-174
  18. Jahrmann, W.: Informationsarbeit in der öffentlichen Bibliothek : Erfahrungen mit Studenten und Oberstufenschülern (1969) 0.02 
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    Source
    BuB. 21(1969), S.266-272
  19. Maizell, R.E.: International Conference for standards on a common language for machine searching and translation (1960) 0.02 
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    College and research libraries. 21(1960) no.2, S. 125-126
  20. Ardenne, M. von; Reball, S.: ¬Die Dokumentenflut und die Wege zur Überwindung der gegenwärtigen Informationskrise (1969) 0.02 
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    Informatik. 16(1969) H.4, S.21-26

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