Search (4 results, page 1 of 1)

  • × author_ss:"Cooper, W.S."
  • × year_i:[1970 TO 1980}
  1. Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973) 0.00 
    0.0025524131 = product of:
  0.0051048263 = sum of:
    0.0051048263 = product of:
      0.010209653 = sum of:
        0.010209653 = weight(_text_:s in 1930) [ClassicSimilarity], result of:
          0.010209653 = score(doc=1930,freq=4.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.20385705 = fieldWeight in 1930, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.09375 = fieldNorm(doc=1930)
      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.191-204.
    Source
    Journal of the American Society for Information Science. 24(1973), S.87-100
  2. Cooper, W.S.: ¬A definition for relevance in information retrieval (1971) 0.00 
    0.002406438 = product of:
  0.004812876 = sum of:
    0.004812876 = product of:
      0.009625752 = sum of:
        0.009625752 = weight(_text_:s in 842) [ClassicSimilarity], result of:
          0.009625752 = score(doc=842,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.19219826 = fieldWeight in 842, 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=842)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Information storage and retrieval. 7(1971), S.19-37
  3. Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976) 0.00 
    0.002406438 = product of:
  0.004812876 = sum of:
    0.004812876 = product of:
      0.009625752 = sum of:
        0.009625752 = weight(_text_:s in 2186) [ClassicSimilarity], result of:
          0.009625752 = score(doc=2186,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.19219826 = fieldWeight in 2186, 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=2186)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Information processing and management. 12(1976), S.367-375
  4. Cooper, W.S.: Indexing documents by Gedanken experimentation (1978) 0.00 
    9.0241426E-4 = product of:
  0.0018048285 = sum of:
    0.0018048285 = product of:
      0.003609657 = sum of:
        0.003609657 = weight(_text_:s in 412) [ClassicSimilarity], result of:
          0.003609657 = score(doc=412,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.072074346 = fieldWeight in 412, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=412)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of the American Society for Information Science. 29(1978), S.107-119