Search (467 results, page 1 of 24)

  • × theme_ss:"Retrievalstudien"
  1. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.08 
    0.08497465 = product of:
  0.12746197 = sum of:
    0.0047212574 = weight(_text_:s in 744) [ClassicSimilarity], result of:
      0.0047212574 = score(doc=744,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.09609913 = fieldWeight in 744, 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=744)
    0.122740716 = sum of:
      0.07376297 = weight(_text_:de in 744) [ClassicSimilarity], result of:
        0.07376297 = score(doc=744,freq=2.0), product of:
          0.19419076 = queryWeight, product of:
            4.297489 = idf(docFreq=1634, maxDocs=44218)
            0.045187026 = queryNorm
          0.37984797 = fieldWeight in 744, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.297489 = idf(docFreq=1634, maxDocs=44218)
            0.0625 = fieldNorm(doc=744)
      0.048977744 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
        0.048977744 = score(doc=744,freq=2.0), product of:
          0.15823726 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.045187026 = queryNorm
          0.30952093 = fieldWeight in 744, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=744)
  0.6666667 = coord(2/3)
    Date
    1. 8.1996 22:01:00
    Source
    Documentaliste. 34(1997) no.2, S.74-81
  2. Chevallet, J.-P.; Bruandet, M.F.: Impact de l'utilisation de multi terms sur la qualité des résponses dùn système de recherche d'information a indexation automatique (1999) 0.07 
    0.06820033 = product of:
  0.10230049 = sum of:
    0.0047212574 = weight(_text_:s in 6253) [ClassicSimilarity], result of:
      0.0047212574 = score(doc=6253,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.09609913 = fieldWeight in 6253, 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=6253)
    0.09757923 = product of:
      0.19515847 = sum of:
        0.19515847 = weight(_text_:de in 6253) [ClassicSimilarity], result of:
          0.19515847 = score(doc=6253,freq=14.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            1.0049833 = fieldWeight in 6253, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.0625 = fieldNorm(doc=6253)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Imprint
    Lille : Université Charles-de-Gaulle
    Pages
    S.223-238
    Source
    Organisation des connaissances en vue de leur intégration dans les systèmes de représentation et de recherche d'information. Ed.: J. Maniez, et al
  3. Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994) 0.06 
    0.055470325 = product of:
  0.083205484 = sum of:
    0.009442515 = weight(_text_:s in 5400) [ClassicSimilarity], result of:
      0.009442515 = score(doc=5400,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.19219826 = fieldWeight in 5400, 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=5400)
    0.07376297 = product of:
      0.14752594 = sum of:
        0.14752594 = weight(_text_:de in 5400) [ClassicSimilarity], result of:
          0.14752594 = score(doc=5400,freq=2.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.75969595 = fieldWeight in 5400, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.125 = fieldNorm(doc=5400)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    CRI bulletin. 29(1994), Sept., S.14-15
  4. Donkersloot, H.B.: Zoeken op titelwoorden : een oderzoek met de on-line publiekscatalogus (1985) 0.06 
    0.055470325 = product of:
  0.083205484 = sum of:
    0.009442515 = weight(_text_:s in 6204) [ClassicSimilarity], result of:
      0.009442515 = score(doc=6204,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = 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)
    0.07376297 = product of:
      0.14752594 = sum of:
        0.14752594 = weight(_text_:de in 6204) [ClassicSimilarity], result of:
          0.14752594 = score(doc=6204,freq=2.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.75969595 = fieldWeight in 6204, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.125 = fieldNorm(doc=6204)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    Open. 17(1985), no.12, S.542-546
  5. Ongering, H.; Riesthuis, G.J.A.: ¬De ontsluiting in het ADION-systeem : precision en recall (1989) 0.06 
    0.055470325 = product of:
  0.083205484 = sum of:
    0.009442515 = weight(_text_:s in 416) [ClassicSimilarity], result of:
      0.009442515 = score(doc=416,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.19219826 = fieldWeight in 416, 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=416)
    0.07376297 = product of:
      0.14752594 = sum of:
        0.14752594 = weight(_text_:de in 416) [ClassicSimilarity], result of:
          0.14752594 = score(doc=416,freq=2.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.75969595 = fieldWeight in 416, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.125 = fieldNorm(doc=416)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    Open. 21(1989) nos.7/8, S.261-264
  6. Munoz, A.M.; Munoz, F.A.: Nuevas areas de conocimiento y la problematica documental : la prospectiva de la paz en la Universidad de Granada (1997) 0.05 
    0.05086128 = product of:
  0.07629192 = sum of:
    0.0041311 = weight(_text_:s in 340) [ClassicSimilarity], result of:
      0.0041311 = score(doc=340,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.08408674 = fieldWeight in 340, 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=340)
    0.07216082 = product of:
      0.14432164 = sum of:
        0.14432164 = weight(_text_:de in 340) [ClassicSimilarity], result of:
          0.14432164 = score(doc=340,freq=10.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.7431952 = fieldWeight in 340, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.0546875 = fieldNorm(doc=340)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    Boletin de la Asociacion Andaluza de Bibliotecarios. 13(1997) no.50, S.9-21
  7. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.03 
    0.034078486 = product of:
  0.051117726 = sum of:
    0.0082622 = weight(_text_:s in 262) [ClassicSimilarity], result of:
      0.0082622 = score(doc=262,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = 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)
    0.042855527 = product of:
      0.085711055 = sum of:
        0.085711055 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.085711055 = score(doc=262,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = 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)
  0.6666667 = coord(2/3)
    Date
    20.10.2000 12:22:23
    Pages
    S.319-339
  8. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.03 
    0.034078486 = product of:
  0.051117726 = sum of:
    0.0082622 = weight(_text_:s in 6418) [ClassicSimilarity], result of:
      0.0082622 = score(doc=6418,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.16817348 = fieldWeight in 6418, 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=6418)
    0.042855527 = product of:
      0.085711055 = sum of:
        0.085711055 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.085711055 = score(doc=6418,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.5416616 = fieldWeight in 6418, 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=6418)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    Online. 22(1998) no.6, S.57-58
  9. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.03 
    0.034078486 = product of:
  0.051117726 = sum of:
    0.0082622 = weight(_text_:s in 6438) [ClassicSimilarity], result of:
      0.0082622 = score(doc=6438,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.16817348 = fieldWeight in 6438, 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=6438)
    0.042855527 = product of:
      0.085711055 = sum of:
        0.085711055 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.085711055 = score(doc=6438,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.5416616 = fieldWeight in 6438, 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=6438)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    11. 8.2001 16:22:19
    Source
    Information processing and management. 36(2000) no.1, S.3-36
  10. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.03 
    0.034078486 = product of:
  0.051117726 = sum of:
    0.0082622 = weight(_text_:s in 5089) [ClassicSimilarity], result of:
      0.0082622 = score(doc=5089,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.16817348 = fieldWeight in 5089, 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=5089)
    0.042855527 = product of:
      0.085711055 = sum of:
        0.085711055 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.085711055 = score(doc=5089,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.5416616 = fieldWeight in 5089, 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=5089)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    22. 7.2006 18:43:54
    Source
    Journal of the American Society for Information Science. 41(1990) no.4, S.272-281
  11. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.02 
    0.024341775 = product of:
  0.03651266 = sum of:
    0.0059015723 = weight(_text_:s in 3103) [ClassicSimilarity], result of:
      0.0059015723 = score(doc=3103,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.120123915 = fieldWeight in 3103, 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=3103)
    0.03061109 = product of:
      0.06122218 = sum of:
        0.06122218 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.06122218 = score(doc=3103,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.38690117 = fieldWeight in 3103, 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=3103)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    27. 2.1999 20:55:22
    Pages
    S.191-197
  12. Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997) 0.02 
    0.024341775 = product of:
  0.03651266 = sum of:
    0.0059015723 = weight(_text_:s in 3107) [ClassicSimilarity], result of:
      0.0059015723 = score(doc=3107,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.120123915 = fieldWeight in 3107, 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=3107)
    0.03061109 = product of:
      0.06122218 = sum of:
        0.06122218 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.06122218 = score(doc=3107,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.38690117 = fieldWeight in 3107, 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=3107)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    27. 2.1999 20:59:22
    Pages
    S.477-487
  13. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.02 
    0.024341775 = product of:
  0.03651266 = sum of:
    0.0059015723 = weight(_text_:s in 2417) [ClassicSimilarity], result of:
      0.0059015723 = score(doc=2417,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = 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)
    0.03061109 = product of:
      0.06122218 = sum of:
        0.06122218 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
          0.06122218 = score(doc=2417,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = 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)
  0.6666667 = coord(2/3)
    Pages
    S.22-25
  14. Ellis, D.: Progress and problems in information retrieval (1996) 0.02 
    0.021777555 = product of:
  0.032666333 = sum of:
    0.008177459 = weight(_text_:s in 789) [ClassicSimilarity], result of:
      0.008177459 = score(doc=789,freq=6.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.1664486 = fieldWeight in 789, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.0625 = fieldNorm(doc=789)
    0.024488872 = product of:
      0.048977744 = sum of:
        0.048977744 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
          0.048977744 = score(doc=789,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.30952093 = fieldWeight in 789, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=789)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    26. 7.2002 20:22:46
    Footnote
    Rez. in: Managing information 3(1996) no.10, S.49 (D. Bawden); Program 32(1998) no.2, S.190-192 (C. Revie)
    Pages
    220 S
  15. Colace, F.; Santo, M. de; Greco, L.; Napoletano, P.: Improving relevance feedback-based query expansion by the use of a weighted word pairs approach (2015) 0.02 
    0.02080137 = product of:
  0.031202054 = sum of:
    0.0035409431 = weight(_text_:s in 2263) [ClassicSimilarity], result of:
      0.0035409431 = score(doc=2263,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.072074346 = fieldWeight in 2263, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.046875 = fieldNorm(doc=2263)
    0.027661111 = product of:
      0.055322222 = sum of:
        0.055322222 = weight(_text_:de in 2263) [ClassicSimilarity], result of:
          0.055322222 = score(doc=2263,freq=2.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.28488597 = fieldWeight in 2263, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.046875 = fieldNorm(doc=2263)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Source
    Journal of the Association for Information Science and Technology. 66(2015) no.11, S.2223-2234
  16. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.02 
    0.020777158 = product of:
  0.031165738 = sum of:
    0.0066768667 = weight(_text_:s in 3087) [ClassicSimilarity], result of:
      0.0066768667 = score(doc=3087,freq=4.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.1359047 = fieldWeight in 3087, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.0625 = fieldNorm(doc=3087)
    0.024488872 = product of:
      0.048977744 = sum of:
        0.048977744 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
          0.048977744 = score(doc=3087,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.30952093 = fieldWeight in 3087, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=3087)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Abstract
    Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
    Pages
    546 S
    Type
    s
  17. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.02 
    0.020777158 = product of:
  0.031165738 = sum of:
    0.0066768667 = weight(_text_:s in 261) [ClassicSimilarity], result of:
      0.0066768667 = score(doc=261,freq=4.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.1359047 = fieldWeight in 261, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.0625 = fieldNorm(doc=261)
    0.024488872 = product of:
      0.048977744 = sum of:
        0.048977744 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.048977744 = score(doc=261,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.30952093 = fieldWeight in 261, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=261)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Abstract
    Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
    Footnote
    Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
    Source
    nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
  18. Wildemuth, B.M.; Jacob, E.K.; Fullington, A.;; Bliek, R. de; Friedman, C.P.: ¬A detailed analysis of end-user search behaviours (1991) 0.02 
    0.019766059 = product of:
  0.029649086 = sum of:
    0.0065981587 = weight(_text_:s in 2423) [ClassicSimilarity], result of:
      0.0065981587 = score(doc=2423,freq=10.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.13430263 = fieldWeight in 2423, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2423)
    0.023050927 = product of:
      0.046101853 = sum of:
        0.046101853 = weight(_text_:de in 2423) [ClassicSimilarity], result of:
          0.046101853 = score(doc=2423,freq=2.0), product of:
            0.19419076 = queryWeight, product of:
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.045187026 = queryNorm
            0.23740499 = fieldWeight in 2423, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.297489 = idf(docFreq=1634, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2423)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Abstract
    Search statements in this revision process can be viewed as a 'move' in the overall search strategy. Very little is known about how end users develop and revise their search strategies. A study was conducted to analyse the moves made in 244 data base searches conducted by 26 medical students at the University of North Carolina at Chapel Hill. Students search INQUIRER, a data base of facts and concepts in microbiology. The searches were conducted during a 3-week period in spring 1990 and were recorded by the INQUIRER system. Each search statement was categorised, using Fidel's online searching moves (S. Online review 9(1985) S.61-74) and Bates' search tactics (s. JASIS 30(1979) S.205-214). Further analyses indicated that the most common moves were Browse/Specity, Select Exhaust, Intersect, and Vary, and that selection of moves varied by student and by problem. Analysis of search tactics (combinations of moves) identified 5 common search approaches. The results of this study have implcations for future research on search behaviours, for thedesign of system interfaces and data base structures, and for the training of end users
    Pages
    S.302-312
  19. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.02 
    0.01947342 = product of:
  0.02921013 = sum of:
    0.0047212574 = weight(_text_:s in 5002) [ClassicSimilarity], result of:
      0.0047212574 = score(doc=5002,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.09609913 = fieldWeight in 5002, 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=5002)
    0.024488872 = product of:
      0.048977744 = sum of:
        0.048977744 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.048977744 = score(doc=5002,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.30952093 = fieldWeight in 5002, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=5002)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Date
    19. 3.1996 11:22:12
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  20. Sanderson, M.: ¬The Reuters test collection (1996) 0.02 
    0.01947342 = product of:
  0.02921013 = sum of:
    0.0047212574 = weight(_text_:s in 6971) [ClassicSimilarity], result of:
      0.0047212574 = score(doc=6971,freq=2.0), product of:
        0.049129035 = queryWeight, product of:
          1.0872376 = idf(docFreq=40523, maxDocs=44218)
          0.045187026 = queryNorm
        0.09609913 = fieldWeight in 6971, 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=6971)
    0.024488872 = product of:
      0.048977744 = sum of:
        0.048977744 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
          0.048977744 = score(doc=6971,freq=2.0), product of:
            0.15823726 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045187026 = queryNorm
            0.30952093 = fieldWeight in 6971, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=6971)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)
    Pages
    S.219-227
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon

Authors

Years

Languages

Types

  • a 434
  • s 15
  • m 9
  • r 7
  • el 6
  • x 6
  • More… Less…

Themes

Subjects

Classifications