Search (3 results, page 1 of 1)

  • × author_ss:"Cleverdon, C.W."
  • × theme_ss:"Indexierungsstudien"
  1. Cleverdon, C.W.: Evaluation tests of information retrieval systems (1970) 0.01
    0.0095745325 = product of:
      0.023936331 = sum of:
        0.011086997 = weight(_text_:a in 2272) [ClassicSimilarity], result of:
          0.011086997 = score(doc=2272,freq=2.0), product of:
            0.054392863 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.047173154 = queryNorm
            0.20383182 = fieldWeight in 2272, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.125 = fieldNorm(doc=2272)
        0.012849336 = product of:
          0.025698671 = sum of:
            0.025698671 = weight(_text_:information in 2272) [ClassicSimilarity], result of:
              0.025698671 = score(doc=2272,freq=2.0), product of:
                0.08281143 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.047173154 = queryNorm
                0.3103276 = fieldWeight in 2272, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.125 = fieldNorm(doc=2272)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Type
    a
  2. Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960) 0.01
    0.007669573 = product of:
      0.038347866 = sum of:
        0.038347866 = product of:
          0.07669573 = sum of:
            0.07669573 = weight(_text_:22 in 6158) [ClassicSimilarity], result of:
              0.07669573 = score(doc=6158,freq=2.0), product of:
                0.16519235 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.047173154 = queryNorm
                0.46428138 = fieldWeight in 6158, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6158)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
    Footnote
    Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
  3. Cleverdon, C.W.: ¬The Cranfield tests on index language devices (1967) 0.01
    0.0071808994 = product of:
      0.017952248 = sum of:
        0.0083152475 = weight(_text_:a in 1957) [ClassicSimilarity], result of:
          0.0083152475 = score(doc=1957,freq=2.0), product of:
            0.054392863 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.047173154 = queryNorm
            0.15287387 = fieldWeight in 1957, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.09375 = fieldNorm(doc=1957)
        0.009637002 = product of:
          0.019274004 = sum of:
            0.019274004 = weight(_text_:information in 1957) [ClassicSimilarity], result of:
              0.019274004 = score(doc=1957,freq=2.0), product of:
                0.08281143 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.047173154 = queryNorm
                0.23274569 = fieldWeight in 1957, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1957)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.47-58.
    Type
    a

Types