Search (44 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  • × year_i:[1980 TO 1990}
  1. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.06
    0.060526244 = product of:
      0.12105249 = sum of:
        0.12105249 = sum of:
          0.025620386 = weight(_text_:d in 262) [ClassicSimilarity], result of:
            0.025620386 = score(doc=262,freq=2.0), product of:
              0.0871823 = queryWeight, product of:
                1.899872 = idf(docFreq=17979, maxDocs=44218)
                0.045888513 = queryNorm
              0.29387143 = fieldWeight in 262, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.899872 = idf(docFreq=17979, maxDocs=44218)
                0.109375 = fieldNorm(doc=262)
          0.008390464 = weight(_text_:s in 262) [ClassicSimilarity], result of:
            0.008390464 = score(doc=262,freq=2.0), product of:
              0.049891718 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.045888513 = queryNorm
              0.16817348 = fieldWeight in 262, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.109375 = fieldNorm(doc=262)
          0.08704164 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
            0.08704164 = score(doc=262,freq=2.0), product of:
              0.16069375 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.045888513 = queryNorm
              0.5416616 = fieldWeight in 262, 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=262)
      0.5 = coord(1/2)
    
    Date
    20.10.2000 12:22:23
    Language
    d
    Pages
    S.319-339
  2. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.02
    0.02272193 = product of:
      0.04544386 = sum of:
        0.04544386 = product of:
          0.06816579 = sum of:
            0.0059931884 = weight(_text_:s in 2417) [ClassicSimilarity], result of:
              0.0059931884 = score(doc=2417,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.120123915 = fieldWeight in 2417, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=2417)
            0.0621726 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.0621726 = score(doc=2417,freq=2.0), product of:
                0.16069375 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045888513 = queryNorm
                0.38690117 = fieldWeight in 2417, 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=2417)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Pages
    S.22-25
  3. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.02
    0.01590535 = product of:
      0.0318107 = sum of:
        0.0318107 = product of:
          0.04771605 = sum of:
            0.004195232 = weight(_text_:s in 5001) [ClassicSimilarity], result of:
              0.004195232 = score(doc=5001,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.08408674 = fieldWeight in 5001, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5001)
            0.04352082 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
              0.04352082 = score(doc=5001,freq=2.0), product of:
                0.16069375 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045888513 = queryNorm
                0.2708308 = fieldWeight in 5001, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5001)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    14. 3.1996 13:22:21
    Source
    Special libraries. 74(1983) no.1, S. 56-60
  4. Biebricher, P.; Fuhr, N.; Niewelt, B.: ¬Der AIR-Retrievaltest (1986) 0.01
    0.008097822 = product of:
      0.016195644 = sum of:
        0.016195644 = product of:
          0.024293464 = sum of:
            0.018300276 = weight(_text_:d in 4040) [ClassicSimilarity], result of:
              0.018300276 = score(doc=4040,freq=2.0), product of:
                0.0871823 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045888513 = queryNorm
                0.20990817 = fieldWeight in 4040, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4040)
            0.0059931884 = weight(_text_:s in 4040) [ClassicSimilarity], result of:
              0.0059931884 = score(doc=4040,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.120123915 = fieldWeight in 4040, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4040)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Language
    d
    Pages
    S.127-143
  5. Hartley, D.: ¬A 'laboratory' method for the comparison of retrieval effectiveness in manual and online searching (1984) 0.01
    0.0064782575 = product of:
      0.012956515 = sum of:
        0.012956515 = product of:
          0.019434772 = sum of:
            0.014640221 = weight(_text_:d in 8919) [ClassicSimilarity], result of:
              0.014640221 = score(doc=8919,freq=2.0), product of:
                0.0871823 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045888513 = queryNorm
                0.16792654 = fieldWeight in 8919, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=8919)
            0.0047945506 = weight(_text_:s in 8919) [ClassicSimilarity], result of:
              0.0047945506 = score(doc=8919,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.09609913 = fieldWeight in 8919, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=8919)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Pages
    S.157-166
  6. Jochum, F.; Weissmann, V.: Struktur und Elemente des Information Retrieval Experiments (1985) 0.01
    0.0064782575 = product of:
      0.012956515 = sum of:
        0.012956515 = product of:
          0.019434772 = sum of:
            0.014640221 = weight(_text_:d in 114) [ClassicSimilarity], result of:
              0.014640221 = score(doc=114,freq=2.0), product of:
                0.0871823 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045888513 = queryNorm
                0.16792654 = fieldWeight in 114, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=114)
            0.0047945506 = weight(_text_:s in 114) [ClassicSimilarity], result of:
              0.0047945506 = score(doc=114,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.09609913 = fieldWeight in 114, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=114)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Language
    d
    Pages
    S.76-87
  7. Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985) 0.00
    0.0017300847 = product of:
      0.0034601693 = sum of:
        0.0034601693 = product of:
          0.010380507 = sum of:
            0.010380507 = weight(_text_:s in 1345) [ClassicSimilarity], result of:
              0.010380507 = score(doc=1345,freq=6.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.20806074 = fieldWeight in 1345, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1345)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Footnote
    Vgl. auch : Salton, G.: Another look ... Comm. ACM 29(1986) S.S.648-656; Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23: Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. proc. man. 26(1990) S.437-447.
    Source
    Communications of the Association for Computing Machinery. 28(1985), S.280-299
  8. Dillon, M.: Enhanced bibliographic record retrieval experiments (1989) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 1406) [ClassicSimilarity], result of:
              0.009589101 = score(doc=1406,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 1406, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=1406)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    OCLC newsletter. 1989, no.181, S.13-14
  9. Regazzi, J.J.: Evaluating indexing systems : a review after Cranfield (1980) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 1849) [ClassicSimilarity], result of:
              0.009589101 = score(doc=1849,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 1849, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=1849)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Indexer. 12(1980) no.1, S.15-20
  10. Robertson, S.E.: ¬The methodology of information retrieval experiment (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3146) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3146,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3146, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3146)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.9-31
  11. Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3147) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3147,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3147, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3147)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.32-43
  12. Belkin, N.J.: Ineffable concepts in information retrieval (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3148) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3148,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3148, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3148)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.44-58
  13. Tague, J.M.: ¬The pragmatics of information retrieval experimentation (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3149) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3149,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3149, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3149)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.59-102
  14. Barraclough, E.D.: Opportunities for testing with online systems (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3151) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3151,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3151, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3151)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.128-135
  15. Keen, E.M.: Laboratory tests of manual systems (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3152) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3152,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3152, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3152)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.136-155
  16. Oddy, R.N.: Laboratory tests : automatic systems (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3153) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3153,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3153, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3153)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.156-178
  17. Heine, M.D.: Simulation, and simulation experiments (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3154) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3154,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3154, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3154)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.179-198
  18. Cooper, W.S.: Gedanken experimentation : an alternative to traditional system testing? (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3155) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3155,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3155, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3155)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.199-210
  19. Sparck Jones, K.: Retrieval system tests 1958-1978 (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3156) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3156,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3156, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3156)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.213-255
  20. Sparck Jones, K.: ¬The Cranfield tests (1981) 0.00
    0.0015981835 = product of:
      0.003196367 = sum of:
        0.003196367 = product of:
          0.009589101 = sum of:
            0.009589101 = weight(_text_:s in 3157) [ClassicSimilarity], result of:
              0.009589101 = score(doc=3157,freq=2.0), product of:
                0.049891718 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.045888513 = queryNorm
                0.19219826 = fieldWeight in 3157, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.125 = fieldNorm(doc=3157)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.256-284