Search (2 results, page 1 of 1)

  • × author_ss:"Luhn, H.P."
  • × year_i:[1960 TO 1970}
  1. Luhn, H.P.: Keyword-in-context index for technical literature (1960) 0.00 
    0.0019700683 = product of:
  0.0039401366 = sum of:
    0.0039401366 = product of:
      0.007880273 = sum of:
        0.007880273 = weight(_text_:s in 4997) [ClassicSimilarity], result of:
          0.007880273 = score(doc=4997,freq=2.0), product of:
            0.04100075 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.03771094 = queryNorm
            0.19219826 = fieldWeight in 4997, 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=4997)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    American documentation. 11(1960), S.288-295
  2. Luhn, H.P.: ¬The automatic derivation of information retrieval encodements from machine-readable texts (1961) 0.00 
    0.0017413107 = product of:
  0.0034826214 = sum of:
    0.0034826214 = product of:
      0.006965243 = sum of:
        0.006965243 = weight(_text_:s in 1926) [ClassicSimilarity], result of:
          0.006965243 = score(doc=1926,freq=4.0), product of:
            0.04100075 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.03771094 = queryNorm
            0.16988087 = fieldWeight in 1926, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.078125 = fieldNorm(doc=1926)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.21-24.
    Pages
    S.1021-1028