Search (4 results, page 1 of 1)

  • × language_ss:"e"
  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  • × year_i:[1970 TO 1980}
  1. Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973) 0.01 
    0.0052968836 = product of:
  0.021187535 = sum of:
    0.021187535 = product of:
      0.0635626 = sum of:
        0.0635626 = weight(_text_:k in 1930) [ClassicSimilarity], result of:
          0.0635626 = score(doc=1930,freq=2.0), product of:
            0.13429943 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.037621226 = queryNorm
            0.47329018 = fieldWeight in 1930, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.09375 = fieldNorm(doc=1930)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)
    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 
    0.0050971564 = product of:
  0.020388626 = sum of:
    0.020388626 = product of:
      0.04077725 = sum of:
        0.04077725 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.04077725 = score(doc=5002,freq=2.0), product of:
            0.13174312 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037621226 = 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)
  0.25 = coord(1/4)
    Date
    19. 3.1996 11:22:12
  3. Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976) 0.00 
    0.0030898487 = product of:
  0.012359395 = sum of:
    0.012359395 = product of:
      0.037078183 = sum of:
        0.037078183 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
          0.037078183 = score(doc=4161,freq=2.0), product of:
            0.13429943 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.037621226 = queryNorm
            0.27608594 = fieldWeight in 4161, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4161)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)
  4. Bhattacharyya, K.: ¬The effectiveness of natural language in science indexing and retrieval (1974) 0.00 
    0.0026484418 = product of:
  0.010593767 = sum of:
    0.010593767 = product of:
      0.0317813 = sum of:
        0.0317813 = weight(_text_:k in 2628) [ClassicSimilarity], result of:
          0.0317813 = score(doc=2628,freq=2.0), product of:
            0.13429943 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.037621226 = queryNorm
            0.23664509 = fieldWeight in 2628, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.046875 = fieldNorm(doc=2628)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)

Authors