Search (6 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02
    0.024179084 = product of:
      0.04835817 = sum of:
        0.04835817 = product of:
          0.09671634 = sum of:
            0.09671634 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.09671634 = score(doc=2134,freq=2.0), product of:
                0.1785549 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05098903 = queryNorm
                0.5416616 = fieldWeight in 2134, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2134)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    30. 3.2001 13:32:22
  2. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.01381662 = product of:
      0.02763324 = sum of:
        0.02763324 = product of:
          0.05526648 = sum of:
            0.05526648 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.05526648 = score(doc=5002,freq=2.0), product of:
                0.1785549 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05098903 = 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
  3. Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996) 0.01
    0.010362465 = product of:
      0.02072493 = sum of:
        0.02072493 = product of:
          0.04144986 = sum of:
            0.04144986 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
              0.04144986 = score(doc=6967,freq=2.0), product of:
                0.1785549 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05098903 = 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)
      0.5 = coord(1/2)
    
    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
  4. 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) 0.01
    0.0087212585 = product of:
      0.017442517 = sum of:
        0.017442517 = product of:
          0.034885034 = sum of:
            0.034885034 = weight(_text_:m in 7522) [ClassicSimilarity], result of:
              0.034885034 = score(doc=7522,freq=2.0), product of:
                0.12688358 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.05098903 = queryNorm
                0.27493733 = fieldWeight in 7522, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.078125 = fieldNorm(doc=7522)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Rijsbergen, C.J. van: Information retrieval (1979) 0.01
    0.0061048805 = product of:
      0.012209761 = sum of:
        0.012209761 = product of:
          0.024419522 = sum of:
            0.024419522 = weight(_text_:m in 856) [ClassicSimilarity], result of:
              0.024419522 = score(doc=856,freq=2.0), product of:
                0.12688358 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.05098903 = queryNorm
                0.19245613 = fieldWeight in 856, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=856)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    m
  6. Rijsbergen, C.J. van; Lalmas, M.: Information calculus for information retrieval (1996) 0.00
    0.0043606292 = product of:
      0.0087212585 = sum of:
        0.0087212585 = product of:
          0.017442517 = sum of:
            0.017442517 = weight(_text_:m in 4201) [ClassicSimilarity], result of:
              0.017442517 = score(doc=4201,freq=2.0), product of:
                0.12688358 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.05098903 = queryNorm
                0.13746867 = fieldWeight in 4201, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4201)
          0.5 = coord(1/2)
      0.5 = coord(1/2)