Search (6 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × theme_ss:"Retrievalstudien"
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.03
    0.027370533 = product of:
      0.054741066 = sum of:
        0.054741066 = sum of:
          0.004812876 = weight(_text_:s in 5002) [ClassicSimilarity], result of:
            0.004812876 = score(doc=5002,freq=2.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = queryNorm
              0.09609913 = fieldWeight in 5002, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.0625 = fieldNorm(doc=5002)
          0.04992819 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
            0.04992819 = score(doc=5002,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = 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)
    
    Date
    19. 3.1996 11:22:12
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  2. Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996) 0.02
    0.0205279 = product of:
      0.0410558 = sum of:
        0.0410558 = sum of:
          0.003609657 = weight(_text_:s in 6967) [ClassicSimilarity], result of:
            0.003609657 = score(doc=6967,freq=2.0), product of:
              0.05008241 = queryWeight, product of:
                1.0872376 = idf(docFreq=40523, maxDocs=44218)
                0.046063907 = queryNorm
              0.072074346 = fieldWeight in 6967, 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=6967)
          0.03744614 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
            0.03744614 = score(doc=6967,freq=2.0), product of:
              0.16130796 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046063907 = queryNorm
              0.23214069 = fieldWeight in 6967, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046875 = fieldNorm(doc=6967)
      0.5 = coord(1/2)
    
    Pages
    S.47-76
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  3. Rijsbergen, C.J. van: Foundations of evaluation (1974) 0.00
    0.0030080476 = product of:
      0.006016095 = sum of:
        0.006016095 = product of:
          0.01203219 = sum of:
            0.01203219 = weight(_text_:s in 1078) [ClassicSimilarity], result of:
              0.01203219 = score(doc=1078,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.24024783 = fieldWeight in 1078, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.15625 = fieldNorm(doc=1078)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of documentation. 30(1974), S.365-373
  4. Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.00
    0.002406438 = product of:
      0.004812876 = sum of:
        0.004812876 = product of:
          0.009625752 = sum of:
            0.009625752 = weight(_text_:s in 3147) [ClassicSimilarity], result of:
              0.009625752 = score(doc=3147,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.19219826 = fieldWeight in 3147, 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=3147)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.32-43
  5. Crestani, F.; Ruthven, I.; Sanderson, M.; Rijsbergen, C.J. van: ¬The troubles with using a logical model of IR on a large collection of documents : experimenting retrieval by logical imaging on TREC (1996) 0.00
    0.0015040238 = product of:
      0.0030080476 = sum of:
        0.0030080476 = product of:
          0.006016095 = sum of:
            0.006016095 = weight(_text_:s in 7522) [ClassicSimilarity], result of:
              0.006016095 = score(doc=7522,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.120123915 = fieldWeight in 7522, 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=7522)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Pages
    S.509-526
  6. Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976) 0.00
    0.0010528166 = product of:
      0.0021056333 = sum of:
        0.0021056333 = product of:
          0.0042112665 = sum of:
            0.0042112665 = weight(_text_:s in 4161) [ClassicSimilarity], result of:
              0.0042112665 = score(doc=4161,freq=2.0), product of:
                0.05008241 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.046063907 = queryNorm
                0.08408674 = fieldWeight in 4161, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4161)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of documentation. 32(1976) no.1, S.59-75