Search (49 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[1980 TO 1990}
  1. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.05
    0.04789843 = product of:
      0.09579686 = sum of:
        0.09579686 = sum of:
          0.008422533 = weight(_text_:s in 262) [ClassicSimilarity], result of:
            0.008422533 = score(doc=262,freq=2.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = 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)
          0.08737433 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
            0.08737433 = score(doc=262,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = 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
    Pages
    S.319-339
  2. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.03
    0.034213167 = product of:
      0.06842633 = sum of:
        0.06842633 = sum of:
          0.006016095 = weight(_text_:s in 2417) [ClassicSimilarity], result of:
            0.006016095 = score(doc=2417,freq=2.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = 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)
          0.06241024 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
            0.06241024 = score(doc=2417,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = 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)
      0.5 = coord(1/2)
    
    Pages
    S.22-25
  3. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.02
    0.023949215 = product of:
      0.04789843 = sum of:
        0.04789843 = sum of:
          0.0042112665 = weight(_text_:s in 5001) [ClassicSimilarity], result of:
            0.0042112665 = score(doc=5001,freq=2.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = 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)
          0.043687165 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
            0.043687165 = score(doc=5001,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = 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)
      0.5 = coord(1/2)
    
    Date
    14. 3.1996 13:22:21
    Source
    Special libraries. 74(1983) no.1, S. 56-60
  4. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.02
    0.021275483 = product of:
      0.042550966 = sum of:
        0.042550966 = sum of:
          0.0051048263 = weight(_text_:s in 3564) [ClassicSimilarity], result of:
            0.0051048263 = score(doc=3564,freq=4.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = queryNorm
              0.101928525 = fieldWeight in 3564, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046875 = fieldNorm(doc=3564)
          0.03744614 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
            0.03744614 = score(doc=3564,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = queryNorm
              0.23214069 = fieldWeight in 3564, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046875 = fieldNorm(doc=3564)
      0.5 = coord(1/2)
    
    Date
    9. 1.1996 10:22:31
    Pages
    S.34-39
    Type
    s
  5. Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985) 0.00
    0.002605046 = product of:
      0.005210092 = sum of:
        0.005210092 = product of:
          0.010420184 = sum of:
            0.010420184 = weight(_text_:s in 1345) [ClassicSimilarity], result of:
              0.010420184 = score(doc=1345,freq=6.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      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
  6. Dillon, M.: Enhanced bibliographic record retrieval experiments (1989) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 1406) [ClassicSimilarity], result of:
              0.009625752 = score(doc=1406,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    OCLC newsletter. 1989, no.181, S.13-14
  7. Regazzi, J.J.: Evaluating indexing systems : a review after Cranfield (1980) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 1849) [ClassicSimilarity], result of:
              0.009625752 = score(doc=1849,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Indexer. 12(1980) no.1, S.15-20
  8. Robertson, S.E.: ¬The methodology of information retrieval experiment (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3146) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3146,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.9-31
  9. Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3147) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3147,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.32-43
  10. Belkin, N.J.: Ineffable concepts in information retrieval (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3148) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3148,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.44-58
  11. Tague, J.M.: ¬The pragmatics of information retrieval experimentation (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3149) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3149,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.59-102
  12. Barraclough, E.D.: Opportunities for testing with online systems (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3151) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3151,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.128-135
  13. Keen, E.M.: Laboratory tests of manual systems (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3152) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3152,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.136-155
  14. Oddy, R.N.: Laboratory tests : automatic systems (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3153) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3153,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.156-178
  15. Heine, M.D.: Simulation, and simulation experiments (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3154) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3154,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.179-198
  16. Cooper, W.S.: Gedanken experimentation : an alternative to traditional system testing? (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3155) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3155,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.199-210
  17. Sparck Jones, K.: Retrieval system tests 1958-1978 (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3156) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3156,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.213-255
  18. Sparck Jones, K.: ¬The Cranfield tests (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3157) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3157,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.256-284
  19. Evans, L.: ¬An experiment : search strategy variations in SDI (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3158) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3158,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.19219826 = fieldWeight in 3158, 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=3158)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.285-315
  20. Donkersloot, H.B.: Zoeken op titelwoorden : een oderzoek met de on-line publiekscatalogus (1985) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 6204) [ClassicSimilarity], result of:
              0.009625752 = score(doc=6204,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.19219826 = fieldWeight in 6204, 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=6204)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Open. 17(1985), no.12, S.542-546