Search (3 results, page 1 of 1)

  • × author_ss:"Bollmann-Sdorra, P."
  • × year_i:[1990 TO 2000}
  1. Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990) 0.00
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = product of:
          0.006016095 = sum of:
            0.006016095 = weight(_text_:s in 5113) [ClassicSimilarity], result of:
              0.006016095 = score(doc=5113,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.120123915 = fieldWeight in 5113, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5113)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Nachrichten für Dokumentation. 41(1990) H.1, S.9-12
  2. Bollmann-Sdorra, P.; Raghavan, V.V.: On the delusiveness of adopting a common space for modelling IR objects : are queries documents? (1993) 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 6180) [ClassicSimilarity], result of:
              0.003609657 = score(doc=6180,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.072074346 = fieldWeight in 6180, 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=6180)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science. 44(1993) no.10, S.579-587
  3. Bollmann-Sdorra, P.; Raghavan, V.V.: On the necessity of term dependence in a query space for weighted retrieval (1998) 0.00
    7.520119E-4 = product of:
      0.0015040238 = sum of:
        0.0015040238 = product of:
          0.0030080476 = sum of:
            0.0030080476 = weight(_text_:s in 2158) [ClassicSimilarity], result of:
              0.0030080476 = score(doc=2158,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.060061958 = fieldWeight in 2158, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2158)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of the American Society for Information Science. 49(1998) no.13, S.1161-1168

Languages