Search (235 results, page 1 of 12)

  • × year_i:[1980 TO 1990}
  • × language_ss:"e"
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.13
    0.1260274 = product of:
      0.2520548 = sum of:
        0.21054365 = weight(_text_:van in 2134) [ClassicSimilarity], result of:
          0.21054365 = score(doc=2134,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.86258465 = fieldWeight in 2134, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.109375 = fieldNorm(doc=2134)
        0.041511156 = product of:
          0.08302231 = sum of:
            0.08302231 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.08302231 = score(doc=2134,freq=2.0), product of:
                0.15327339 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043769516 = queryNorm
                0.5416616 = fieldWeight in 2134, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2134)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Date
    30. 3.2001 13:32:22
  2. Van der Vet, P.E.: Notes on the foundations of classification theories : a follow-up of what was said at the Elsinore FID/CR conference (1982) 0.08
    0.081226595 = product of:
      0.16245319 = sum of:
        0.15038833 = weight(_text_:van in 55) [ClassicSimilarity], result of:
          0.15038833 = score(doc=55,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.6161319 = fieldWeight in 55, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.078125 = fieldNorm(doc=55)
        0.012064864 = product of:
          0.024129728 = sum of:
            0.024129728 = weight(_text_:der in 55) [ClassicSimilarity], result of:
              0.024129728 = score(doc=55,freq=2.0), product of:
                0.09777089 = queryWeight, product of:
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.043769516 = queryNorm
                0.2467987 = fieldWeight in 55, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.078125 = fieldNorm(doc=55)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
  3. Information retrieval experiment (1981) 0.08
    0.07937479 = product of:
      0.15874958 = sum of:
        0.053477753 = weight(_text_:l in 2653) [ClassicSimilarity], result of:
          0.053477753 = score(doc=2653,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.30739886 = fieldWeight in 2653, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2653)
        0.10527182 = weight(_text_:van in 2653) [ClassicSimilarity], result of:
          0.10527182 = score(doc=2653,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.43129233 = fieldWeight in 2653, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2653)
      0.5 = coord(2/4)
    
    Content
    Enthält die Beiträge: ROBERTSON, S.E.: The methodology of information retrieval experiment; RIJSBERGEN, C.J. van: Retrieval effectiveness; BELKIN, N.: Ineffable concepts in information retrieval; TAGUE, J.M.: The pragmatics of information retrieval experimentation; LANCASTER, F.W.: Evaluation within the environment of an operating information service; BARRACLOUGH, E.D.: Opportunities for testing with online systems; KEEN, M.E.: Laboratory tests of manual systems; ODDY, R.N.: Laboratory tests: automatic systems; HEINE, M.D.: Simulation, and simulation experiments; COOPER, W.S.: Gedanken experimentation: an alternative to traditional system testing?; SPARCK JONES, K.: Actual tests - retrieval system tests; EVANS, L.: An experiment: search strategy variation in SDI profiles; SALTON, G.: The Smart environment for retrieval system evaluation - advantage and problem areas
  4. Bakker, S.; Bleeker, A.; Van der Burg, J.; Dijkman, J.; Hogenaar, A.; Van Ramshorst, G.: Medline on CD-ROM : a comparison (1989) 0.08
    0.07866113 = product of:
      0.15732226 = sum of:
        0.14887685 = weight(_text_:van in 2530) [ClassicSimilarity], result of:
          0.14887685 = score(doc=2530,freq=4.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.60993946 = fieldWeight in 2530, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2530)
        0.008445405 = product of:
          0.01689081 = sum of:
            0.01689081 = weight(_text_:der in 2530) [ClassicSimilarity], result of:
              0.01689081 = score(doc=2530,freq=2.0), product of:
                0.09777089 = queryWeight, product of:
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.043769516 = queryNorm
                0.17275909 = fieldWeight in 2530, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2530)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
  5. Alzofon, S.R.; Van Pulis, N.: Patterns of searching and success rates in an online public access catalog (1984) 0.06
    0.060155332 = product of:
      0.24062133 = sum of:
        0.24062133 = weight(_text_:van in 500) [ClassicSimilarity], result of:
          0.24062133 = score(doc=500,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.98581105 = fieldWeight in 500, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.125 = fieldNorm(doc=500)
      0.25 = coord(1/4)
    
  6. Research and development in information retrieval : Proc. of the 3rd joint BCS and ACM symp., Cambridge, 2.-6.7.1984 (1984) 0.06
    0.060155332 = product of:
      0.24062133 = sum of:
        0.24062133 = weight(_text_:van in 922) [ClassicSimilarity], result of:
          0.24062133 = score(doc=922,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.98581105 = fieldWeight in 922, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.125 = fieldNorm(doc=922)
      0.25 = coord(1/4)
    
    Editor
    Rijsbergen, C.J. van
  7. Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.06
    0.060155332 = product of:
      0.24062133 = sum of:
        0.24062133 = weight(_text_:van in 3147) [ClassicSimilarity], result of:
          0.24062133 = score(doc=3147,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.98581105 = fieldWeight in 3147, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.125 = fieldNorm(doc=3147)
      0.25 = coord(1/4)
    
  8. Pejtersen, A.M.: Design of a classification scheme for fiction based on an analysis of actual user-librarian communication, and use of the scheme for control of librarians' search strategies (1980) 0.05
    0.053023808 = product of:
      0.106047615 = sum of:
        0.076396786 = weight(_text_:l in 5835) [ClassicSimilarity], result of:
          0.076396786 = score(doc=5835,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.4391412 = fieldWeight in 5835, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.078125 = fieldNorm(doc=5835)
        0.029650826 = product of:
          0.059301652 = sum of:
            0.059301652 = weight(_text_:22 in 5835) [ClassicSimilarity], result of:
              0.059301652 = score(doc=5835,freq=2.0), product of:
                0.15327339 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043769516 = queryNorm
                0.38690117 = fieldWeight in 5835, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5835)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Date
    5. 8.2006 13:22:44
    Source
    Theory and application of information research. Proc. of the 2nd Int. Research Forum on Information Science, 3.-6.8.1977, Copenhagen. Ed.: O. Harbo u, L. Kajberg
  9. Fuhr, N.; Knorz, G.: Retrieval test evaluation of a rule based automatic indexing (AIR/PHYS) (1984) 0.05
    0.0451165 = product of:
      0.180466 = sum of:
        0.180466 = weight(_text_:van in 2321) [ClassicSimilarity], result of:
          0.180466 = score(doc=2321,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.7393583 = fieldWeight in 2321, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.09375 = fieldNorm(doc=2321)
      0.25 = coord(1/4)
    
    Source
    Research and development in information retrieval. Proc. of the 3rd joint BCS and ACM symp., Cambridge, 2.-6.7.1984. Ed.: C.J. van Rijsbergen
  10. Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986) 0.05
    0.0451165 = product of:
      0.180466 = sum of:
        0.180466 = weight(_text_:van in 1933) [ClassicSimilarity], result of:
          0.180466 = score(doc=1933,freq=2.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.7393583 = fieldWeight in 1933, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.09375 = fieldNorm(doc=1933)
      0.25 = coord(1/4)
    
  11. Crawford, W.; Stovel, L.; Bales, K.: Bibliographic displays in the online catalog (1986) 0.04
    0.044230826 = product of:
      0.08846165 = sum of:
        0.076396786 = weight(_text_:l in 222) [ClassicSimilarity], result of:
          0.076396786 = score(doc=222,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.4391412 = fieldWeight in 222, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.078125 = fieldNorm(doc=222)
        0.012064864 = product of:
          0.024129728 = sum of:
            0.024129728 = weight(_text_:der in 222) [ClassicSimilarity], result of:
              0.024129728 = score(doc=222,freq=2.0), product of:
                0.09777089 = queryWeight, product of:
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.043769516 = queryNorm
                0.2467987 = fieldWeight in 222, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.2337668 = idf(docFreq=12875, maxDocs=44218)
                  0.078125 = fieldNorm(doc=222)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Footnote
    Umfangreiche Studie zur Gestaltung der Bildschirme in Online-Publikumskatalogen
  12. Salton, G.; Rijsbergen, C.J. van; Maron, M.E.: Panel on key issues in information retrieval (1983) 0.04
    0.042536244 = product of:
      0.17014498 = sum of:
        0.17014498 = weight(_text_:van in 7410) [ClassicSimilarity], result of:
          0.17014498 = score(doc=7410,freq=4.0), product of:
            0.24408463 = queryWeight, product of:
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.043769516 = queryNorm
            0.6970737 = fieldWeight in 7410, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.5765896 = idf(docFreq=454, maxDocs=44218)
              0.0625 = fieldNorm(doc=7410)
      0.25 = coord(1/4)
    
    Abstract
    Contribution to an issue devoted to the 6th Annual International Conference of the Special Interest Group on Information Retrieval of the Association for Computing Machinery (USA) held at the National Library of Medicine, Bethesda, Maryland, from 6-8 June 83. The following papers were presented in session 12 which was a panel on key issues in information retrieval: SALTON, G.: Research problems in automatic information retrieval; RIJSBERGEN, C.J. van: Information retrieval: new directions, old solutions; MARON, M.E.: Open problems in information retrieval
  13. Besant, L.: Early survey findings: users of public online catalogs want sophisticated subject access (1982) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 501) [ClassicSimilarity], result of:
          0.12223486 = score(doc=501,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 501, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=501)
      0.25 = coord(1/4)
    
  14. Trenner, L.: How to win friends and influence people : definitions of user-friendliness in interactive computer systems (1987) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 802) [ClassicSimilarity], result of:
          0.12223486 = score(doc=802,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 802, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=802)
      0.25 = coord(1/4)
    
  15. Estabrook, L.: ¬The human dimension of the catalog : concepts and constraints in information seeking (1983) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 983) [ClassicSimilarity], result of:
          0.12223486 = score(doc=983,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 983, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=983)
      0.25 = coord(1/4)
    
  16. Elsesser, L.: ¬A case of "cirosis" : the subject approach to health information (1984) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 2876) [ClassicSimilarity], result of:
          0.12223486 = score(doc=2876,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 2876, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=2876)
      0.25 = coord(1/4)
    
  17. Fetters, L.: Text indexing and retrieval : WordCruncher, version 4.2 (1988) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 3240) [ClassicSimilarity], result of:
          0.12223486 = score(doc=3240,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 3240, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=3240)
      0.25 = coord(1/4)
    
  18. Davenport, L.; Cronin, B.: What does hypertext offer the information scientist? (1989) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 5293) [ClassicSimilarity], result of:
          0.12223486 = score(doc=5293,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 5293, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=5293)
      0.25 = coord(1/4)
    
  19. Aken, R.; Olson, L.: Application report : Computer-assisted-instruction in academic libraries (1986) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 7385) [ClassicSimilarity], result of:
          0.12223486 = score(doc=7385,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 7385, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=7385)
      0.25 = coord(1/4)
    
  20. Ludy, L.: OSU libraries' use of Library of Congress subject authorities file (1985) 0.03
    0.030558715 = product of:
      0.12223486 = sum of:
        0.12223486 = weight(_text_:l in 7682) [ClassicSimilarity], result of:
          0.12223486 = score(doc=7682,freq=2.0), product of:
            0.17396861 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.043769516 = queryNorm
            0.70262593 = fieldWeight in 7682, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.125 = fieldNorm(doc=7682)
      0.25 = coord(1/4)
    

Types

  • a 180
  • m 34
  • s 17
  • b 3
  • d 3
  • l 1
  • p 1
  • More… Less…

Themes

Subjects

Classifications