Search (2 results, page 1 of 1)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[1970 TO 1980}
  1. Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973) 0.01 
    0.013311978 = product of:
  0.026623957 = sum of:
    0.026623957 = product of:
      0.053247914 = sum of:
        0.053247914 = weight(_text_:u in 1930) [ClassicSimilarity], result of:
          0.053247914 = score(doc=1930,freq=2.0), product of:
            0.12265316 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0374577 = queryNorm
            0.43413407 = fieldWeight in 1930, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, 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.
  2. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01 
    0.010150002 = product of:
  0.020300005 = sum of:
    0.020300005 = product of:
      0.04060001 = sum of:
        0.04060001 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.04060001 = score(doc=5002,freq=2.0), product of:
            0.13117048 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0374577 = queryNorm
            0.30952093 = fieldWeight in 5002, 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=5002)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    19. 3.1996 11:22:12

Authors