Search (6 results, page 1 of 1)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[1980 TO 1990}
  1. MacCain, K.W.: Descriptor and citation retrieval in the medical behavioral sciences literature : retrieval overlaps and novelty distribution (1989) 0.04
    0.03967838 = product of:
      0.07935676 = sum of:
        0.07935676 = product of:
          0.15871352 = sum of:
            0.15871352 = weight(_text_:k.w in 2290) [ClassicSimilarity], result of:
              0.15871352 = score(doc=2290,freq=2.0), product of:
                0.32325765 = queryWeight, product of:
                  7.406428 = idf(docFreq=72, maxDocs=44218)
                  0.043645553 = queryNorm
                0.49098146 = fieldWeight in 2290, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  7.406428 = idf(docFreq=72, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2290)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  2. MacCain, K.W.; White, H.D.; Griffith, B.C.: Comparing retrieval performance in online data bases (1987) 0.03
    0.033065315 = product of:
      0.06613063 = sum of:
        0.06613063 = product of:
          0.13226126 = sum of:
            0.13226126 = weight(_text_:k.w in 1167) [ClassicSimilarity], result of:
              0.13226126 = score(doc=1167,freq=2.0), product of:
                0.32325765 = queryWeight, product of:
                  7.406428 = idf(docFreq=72, maxDocs=44218)
                  0.043645553 = queryNorm
                0.4091512 = fieldWeight in 1167, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  7.406428 = idf(docFreq=72, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1167)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.02
    0.020696795 = product of:
      0.04139359 = sum of:
        0.04139359 = product of:
          0.08278718 = sum of:
            0.08278718 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.08278718 = score(doc=262,freq=2.0), product of:
                0.15283929 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043645553 = 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)
      0.5 = coord(1/2)
    
    Date
    20.10.2000 12:22:23
  4. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01
    0.014783425 = product of:
      0.02956685 = sum of:
        0.02956685 = product of:
          0.0591337 = sum of:
            0.0591337 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.0591337 = score(doc=2417,freq=2.0), product of:
                0.15283929 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043645553 = 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)
      0.5 = coord(1/2)
    
    Pages
    S.22-25
  5. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.01
    0.010348397 = product of:
      0.020696795 = sum of:
        0.020696795 = product of:
          0.04139359 = sum of:
            0.04139359 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
              0.04139359 = score(doc=5001,freq=2.0), product of:
                0.15283929 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043645553 = 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)
      0.5 = coord(1/2)
    
    Date
    14. 3.1996 13:22:21
  6. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.01
    0.008870054 = product of:
      0.017740108 = sum of:
        0.017740108 = product of:
          0.035480216 = sum of:
            0.035480216 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
              0.035480216 = score(doc=3564,freq=2.0), product of:
                0.15283929 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043645553 = 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)
      0.5 = coord(1/2)
    
    Date
    9. 1.1996 10:22:31