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  • × year_i:[1970 TO 1980}
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.06 
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    Abstract
    Many retrievalexperiments are intended to discover ways of improving performance, taking the results obtained with some particular technique as a baseline. The fact that substantial alterations to a system often have little or no effect on particular collections is puzzling. This may be due to the initially poor seperation of relevant and non-relevant documents. The paper presents a procedure for characterizing this seperation for a collection, which can be used to show whether proposed modifications of the base system are likely to be useful.
    Date
    19. 3.1996 11:22:12
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  2. Fugmann, R.: ¬The theoretical foundation of the IDC-system : 6 postulates for information retrieval; treatise 1 on information retrieval theory (1972) 0.04 
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  3. Turski, W.M.: On a model of information retrieval system based on thesaurus (1971) 0.04 
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    Source
    Information storage and retrieval. 7(1971) no.2, S.89-94
  4. Fugmann, R.; Winter, J.H.: Reverse retrieval : toward analogy inferences by mechanized classification (treatise 7 on retrieval system theory) (1979) 0.04 
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  5. Hutchins, W.J.: Linguistic processes in the indexing and retrieval of documents (1970) 0.03 
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    Source
    Linguistics. 61(1970), S.29-64
  6. Artandi, S.: Document retrieval and the concept of sets (1971) 0.03 
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    Source
    Journal of the American Society for Information Science. 22(1971) no.4, S.289-290
  7. Fachsystematik Bremen nebst Schlüssel 1970 ff. (1970 ff) 0.03 
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    Content
    1. Agrarwissenschaften 1981. - 3. Allgemeine Geographie 2.1972. - 3a. Allgemeine Naturwissenschaften 1.1973. - 4. Allgemeine Sprachwissenschaft, Allgemeine Literaturwissenschaft 2.1971. - 6. Allgemeines. 5.1983. - 7. Anglistik 3.1976. - 8. Astronomie, Geodäsie 4.1977. - 12. bio Biologie, bcp Biochemie-Biophysik, bot Botanik, zoo Zoologie 1981. - 13. Bremensien 3.1983. - 13a. Buch- und Bibliothekswesen 3.1975. - 14. Chemie 4.1977. - 14a. Elektrotechnik 1974. - 15 Ethnologie 2.1976. - 16,1. Geowissenschaften. Sachteil 3.1977. - 16,2. Geowissenschaften. Regionaler Teil 3.1977. - 17. Germanistik 6.1984. - 17a,1. Geschichte. Teilsystematik hil. - 17a,2. Geschichte. Teilsystematik his Neuere Geschichte. - 17a,3. Geschichte. Teilsystematik hit Neueste Geschichte. - 18. Humanbiologie 2.1983. - 19. Ingenieurwissenschaften 1974. - 20. siehe 14a. - 21. klassische Philologie 3.1977. - 22. Klinische Medizin 1975. - 23. Kunstgeschichte 2.1971. - 24. Kybernetik. 2.1975. - 25. Mathematik 3.1974. - 26. Medizin 1976. - 26a. Militärwissenschaft 1985. - 27. Musikwissenschaft 1978. - 27a. Noten 2.1974. - 28. Ozeanographie 3.1977. -29. Pädagogik 8.1985. - 30. Philosphie 3.1974. - 31. Physik 3.1974. - 33. Politik, Politische Wissenschaft, Sozialwissenschaft. Soziologie. Länderschlüssel. Register 1981. - 34. Psychologie 2.1972. - 35. Publizistik und Kommunikationswissenschaft 1985. - 36. Rechtswissenschaften 1986. - 37. Regionale Geograpgie 3.1975. - 37a. Religionswissenschaft 1970. - 38. Romanistik 3.1976. - 39. Skandinavistik 4.1985. - 40. Slavistik 1977. - 40a. Sonstige Sprachen und Literaturen 1973. - 43. Sport 4.1983. - 44. Theaterwissenschaft 1985. - 45. Theologie 2.1976. - 45a. Ur- und Frühgeschichte, Archäologie 1970. - 47. Volkskunde 1976. - 47a. Wirtschaftswissenschaften 1971 // Schlüssel: 1. Länderschlüssel 1971. - 2. Formenschlüssel (Kurzform) 1974. - 3. Personenschlüssel Literatur 5. Fassung 1968
  8. ¬The smart retrieval system : experiments in automatic document processing (1971) 0.03 
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  9. Fugmann, R.: Toward a theory of information supply and indexing : treatise 6 on retrieval system theory (1976) 0.03 
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  10. Dattola, R.T.: FIRST: Flexible information retrieval system for text (1979) 0.03 
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  11. Broadbent, D.E.; Broadbent, M.H.P.: ¬The allocation of descriptor terms by individuals in a simulated retrieval system (1978) 0.03 
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  12. Rao, I.K.: ¬The distribution of scientific productivity and social change (1978) 0.03 
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    Abstract
    Results in the literature concerning the probability that an author publishes r articles in time t are reexamined, and it is found that a negative binomial distribution bits scientific productivity data (by the chi-squared goodness-of-fit-test) better than many other distribution such as geometric, logarithmic, zeta, cumulative advantage, etc. It is shown analytically that the nagative binomial distribution describes a pattern of scientific productivity under the 'success-breeds-success' condition in a wide variety of social circumstances
    Source
    Journal of the American Society for Information Science. 29(1978), S.111-122
  13. Gratch, B.; Settel, B.; Atherton, P.: Characteristics of book indexes for subject retrieval in the humanities and social sciences (1978) 0.03 
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    Source
    Indexer. 11(1978), S.14-22
  14. Fugmann, R.; Kusemann, G.; Winter, H.J.: ¬The supply of information an chemical reactions in the IDC system (1979) 0.03 
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    Source
    Information storage and retrieval. 15(1979), S.303-323
  15. Proceedings of second seminar on UDC in a mechanized retrieval system, conducted by R.R. Freeman, Frankfurt, 1.-5.6.1970. (1971) 0.03 
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  16. Waller, W.G.; Kraft, D.H.: ¬A mathematical model of a weighted Boolean retrieval system (1979) 0.03 
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    Abstract
    The use of weights to denote a query representation and/or the indexing of a document is analysed as a generalization of a Boolean retrieval system. Criteria are given for the functions used to evaluate the relevance of the records to a specific query, including self-consistency. Various mechnaisms suggested in the literature for evaluating the relevance of records with regard to a given query are tested and found to be less than satisfactory. A new approach is suggested to avoid some of the perils of a weighted Boolean retrieval system
  17. Salton, G.: Mathematics and information retrieval (1979) 0.03 
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    Abstract
    The development of a given discipline in science and technology often depends on the availability of theorie capable of describing the processes which control the field and of modelling the interactions between the processes. The absence of an accepted theory of information retrieval has benn blamed for the relative disorder and the lack of technical advances in the area. The main mathematical approaches to information retrieval are examined in this study, including both algebraic and probabilistic models, and the difficulties which impede the formalization of information retrieval processes are described. A number of developments are covered where new theoretical understandings have directly led to the improvemenet of retrieval techniques and operations
    Source
    Journal of documentation. 35(1979) no.1, S.1-29
  18. Subject retrieval in the seventies: new directions : Proc. of an Int. Symp. ... College Park, 14.-15.5.1971 (1972) 0.03 
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    Content
    Enthält die Beiträge: WELLISCH, H.H.: Subject retrieval in the seventies: methods, problems, prospects; GROLIER, E. de: Recent research trends in the field of information retrieval languages; SOERGEL, D.: A general model for indexing languages: the basis for compatibility and integration; WILSON, T.D.: The work of the British Classification Research Group; AITCHISON, J.: Thesaurofacet: a new concept in subject retrieval schemes; AUSTIN, D.: The PRECIS system for computer-generated indexes and its use in the British National Bibliography; LLOYD, G.A.: The Universal Decimal Classification as an international switching language; RIGBY, M.: The UDC in mechanized subject information retrieval; ANGELL, R.S.: Library of Congress Subject Headings: review and forecast
  19. Heine, M.H.: Distance between sets as an objective measure of retrieval effectiveness (1973) 0.03 
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    Abstract
    A general measure of retrieval effectiveness having full metric properties and treating the 'retrieval system - arbiter of relevance' situation symmetrically, is the Marczewski-Steinhaus metric, D, measuring the distance between the set of relevant documents, A, and set of retrieved documents, B, according to D=1-(n(A´B)/n(AvB)). D can be expressed as a function of precision and recall, or of generality, fallout and recall, and of other sets of traditional measures. Acceptance of the measure allows criteria for retrieval optimality and degeneracy to be stated, defined by minimum and constant values of D respectively. Precision-recall degeneracy curves for D are given and compared with those for another general measure: the probability that a document will be correctly identfied by a retrieval system. Statistical extensions of D are examined, and these and other properties of the metric are illustrated with seven examples
    Source
    Information storage and retrieval. 9(1973), S.181-198
  20. Cleveland, A.D.; Cleveland, D.B.: ¬A test of Buck's prime number coding scheme (1979) 0.02 
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    Abstract
    An experiment was carried out to study the effect of coding, as an independent variable, on the information retrieval process. A simple prime number coding scheme was utilized in conjunction with Goffman's indirect method file structuring and searching technique. The results demonstrated that a code, in itself, can affect retrieval. It introduces a noticeable viriable into the process. Generally, coding has been considered a minor element, but clearly much more needs to be learned about how codes interact with the other functions in the retrieval system

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