Search (2 results, page 1 of 1)

  • × author_ss:"Lancaster, F.W."
  • × theme_ss:"Retrievalstudien"
  1. Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961) 0.00 
    5.2291044E-4 = product of:
  0.01254985 = sum of:
    0.01254985 = product of:
      0.03764955 = sum of:
        0.03764955 = weight(_text_:p in 1931) [ClassicSimilarity], result of:
          0.03764955 = score(doc=1931,freq=2.0), product of:
            0.078979194 = queryWeight, product of:
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.021966046 = queryNorm
            0.47670212 = fieldWeight in 1931, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.09375 = fieldNorm(doc=1931)
      0.33333334 = coord(1/3)
  0.041666668 = coord(1/24)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.223-246.
  2. Lancaster, F.W.: Evaluating the performance of a large computerized information system (1985) 0.00 
    3.102045E-4 = product of:
  0.0074449074 = sum of:
    0.0074449074 = weight(_text_:des in 3649) [ClassicSimilarity], result of:
      0.0074449074 = score(doc=3649,freq=2.0), product of:
        0.06083074 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.021966046 = queryNorm
        0.12238726 = fieldWeight in 3649, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.03125 = fieldNorm(doc=3649)
  0.041666668 = coord(1/24)
    Footnote
    Nachdruck des Originalartikels mit Kommentierung durch die Herausgeber

Years