Search (3 results, page 1 of 1)

  • × author_ss:"Lancaster, F.W."
  1. Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961) 0.02
    0.019713948 = product of:
      0.039427895 = sum of:
        0.039427895 = product of:
          0.07885579 = sum of:
            0.07885579 = weight(_text_:1997 in 1931) [ClassicSimilarity], result of:
              0.07885579 = score(doc=1931,freq=2.0), product of:
                0.1637463 = queryWeight, product of:
                  3.6322508 = idf(docFreq=3179, maxDocs=44218)
                  0.04508122 = queryNorm
                0.481573 = fieldWeight in 1931, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.6322508 = idf(docFreq=3179, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1931)
          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.223-246.
  2. Qin, J.; Lancaster, F.W.; Allen, B.: Types and levels of collaboration in interdisciplinary research in the sciences (1997) 0.02
    0.018182784 = product of:
      0.03636557 = sum of:
        0.03636557 = product of:
          0.07273114 = sum of:
            0.07273114 = weight(_text_:1997 in 1593) [ClassicSimilarity], result of:
              0.07273114 = score(doc=1593,freq=5.0), product of:
                0.1637463 = queryWeight, product of:
                  3.6322508 = idf(docFreq=3179, maxDocs=44218)
                  0.04508122 = queryNorm
                0.44416967 = fieldWeight in 1593, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  3.6322508 = idf(docFreq=3179, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1593)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science. 48(1997) no.10, S.893-916
    Year
    1997
  3. Lancaster, F.W.: Vocabulary control for information retrieval (1986) 0.01
    0.012215767 = product of:
      0.024431534 = sum of:
        0.024431534 = product of:
          0.04886307 = sum of:
            0.04886307 = weight(_text_:22 in 217) [ClassicSimilarity], result of:
              0.04886307 = score(doc=217,freq=2.0), product of:
                0.15786676 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04508122 = queryNorm
                0.30952093 = fieldWeight in 217, 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=217)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 4.2007 10:07:51