-
Baron, W.: Methodologische Probleme der Begriffe Klassifikation und Systematik sowie Entwicklung und Entstehung in der Biologie (1968)
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- Pages
- S.15-31
-
Blum, R.: ¬Die Deutsche Bibliographie : Rückblick und Ausblick (1966)
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- Pages
- S.91-116
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Rasmussen, D.: Andreas Schleiermacher und das Prinzip der Schlüsselung (1960)
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- Pages
- S.163-175
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Goffman, W.: On relevance as a measure (1964)
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- Source
- Information storage and retrieval. 2(1964), S.201-203
-
Zunde, P.; Dexter, M.E.: Factors affecting indexing performance (1969)
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- Pages
- S.313-322
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Paisley, W.J.; Parker, E.B.: Information retrieval as a receiver-controlled communication system (1965)
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- Pages
- S.23-31
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Fugmann, R.; Braun, W.: ¬Die hierarchische Notation von Begriffen : ein lohnendes Arbeitsfeld für programmgesteuerte Rechenautomaten ; zugleich ein Beitrag zum System der Oktaven von Ranganathan (1962)
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- Source
- Nachrichten für Dokumentation. 13(1962) H.2, S.68-70
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Barnholdt, B.: ¬A computer-based system for production of a UDC-classed libray catalog at the Technological University Library of Denmark (1968)
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- Source
- Libri. 18(1968) no.3/4, S.191-196
-
Roloff, H.: ¬Die Katalogisierung (1961)
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- Pages
- S.242-356
-
Stählin, A.: Zur Geschichte der Systematischen Kataloge der Universitätsbibliothek Erlangen (1960)
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- Pages
- S.137-147
-
Wilson, P.: Subjects and the sense of position (1968)
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- Footnote
- Nachdruck in: Theory of subject analysis: a sourcebook. Eds.: L.M. Chan et al., S.308-325.
- Pages
- S.69-72
-
Zimmermann, E.: Einige Gegenwartsfragen der Sachkatalogisierung (1960)
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- Source
- Zeitschrift für Bibliothekswesen und Bibliographie. 7(1960), S.315-332
-
Barnes, C.: Classification and cataloging of spoken records in academic libraries (1967)
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- Source
- College and research libraries. 28(1967) no.1, S.49-52
-
Grunwald, W.: Klassifikationstheorie (1968)
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- Source
- Zeitschrift für Bibliothekswesen und Bibliographie. 15(1968), S.17-34
-
Borko, H.; Chatman, S.: Criteria for acceptable abstracts : a survey of abstractors' instructions (1963)
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- Source
- American documentation. 14(1963), S.149-160
-
Robertson, S.E.: ¬The parametric description of retrieval tests : Part II: Overall measures (1969)
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- Abstract
- Two general requirements for overall measures of retrieval effectiveness are proposed, namely that the measures should be as far as possible independent of generality (this is interpreted to mean that it can be described in terms of recall and fallout), and that it should be able to measure the effectiveness of a performance curve (it should not be restricted to a simple 2X2 table). Several measures that have been proposed are examined with these conditions in mind. It turns out that most of the satisfactory ones are directly or indirectly related to swet's measure A, the area under the recall-fallout curve. In particular, Brookes' measure S and Rocchio's normalized recall are versions of A.
- Source
- Journal of documentation. 25(1969) no.2, S.93-106
-
Maron, M.E.; Kuhns, I.L.: On relevance, probabilistic indexing and information retrieval (1960)
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- Abstract
- Reports on a novel technique for literature indexing and searching in a mechanized library system. The notion of relevance is taken as the key concept in the theory of information retrieval and a comparative concept of relevance is explicated in terms of the theory of probability. The resulting technique called 'Probabilistic indexing' allows a computing machine, given a request for information, to make a statistical inference and derive a number (called the 'relevance number') for each document, which is a measure of the probability that the document will satisfy the given request. The result of a search is an ordered list of those documents which satisfy the request ranked according to their probable relevance. The paper goes on to show that whereas in a conventional library system the cross-referencing ('see' and 'see also') is based soley on the 'semantic closeness' between index terms, statistical measures of closeness between index terms can be defined and computed. Thus, given an arbitrary request consisting of one (or many) index term(s), a machine can eleborate on it to increase the probability of selecting relevant documents that would not otherwise have been selected. Finally, the paper suggest an interpretation of the whole library problem as one where the request is considered as a clue on the basis of which the library system makes a concatenated statistical inference in order to provide as an output an ordered list of those documents which most probably satisfy the information needs of the user
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.39-46.
- Source
- Journal of the Association for Computing Machinery. 7(1960) no.3, S.216-244
-
Taylor, R.S.: Question negotiation and information seeking in libraries (1968)
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- Footnote
- Vgl. auch in: Reference and information services: a reader. Ed.: B. Katz and A. Tarr. New York: Scarecrow Press 1978. Vgl. auch den Artikel zur Rezeption und Wirkung: Chang, Y.-W.: The influence of Taylor's paper, Question-Negotiation and Information-Seeking in Libraries. In: Information processing and management. 49(2013) no.5, S.983-994.
- Source
- College and research libraries. 29(1968) no.3, S.178-194
-
Melton, J.S.: ¬A use for the techniques of structural linguistics in documentation research (1965)
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- Pages
- S.466-486
-
Moss, R.: Categories and relations : Origins of two classification theories (1964)
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- Source
- American documentation. 15(1964), S.296-301
