Search (4 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  1. Rijsbergen, C.J. van: Information retrieval (1979) 0.04
    0.043998793 = product of:
      0.087997586 = sum of:
        0.087997586 = product of:
          0.17599517 = sum of:
            0.17599517 = weight(_text_:informationssysteme in 856) [ClassicSimilarity], result of:
              0.17599517 = score(doc=856,freq=4.0), product of:
                0.28553253 = queryWeight, product of:
                  5.6354303 = idf(docFreq=428, maxDocs=44218)
                  0.050667387 = queryNorm
                0.6163752 = fieldWeight in 856, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  5.6354303 = idf(docFreq=428, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=856)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Classification
    ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
    RVK
    ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme
  2. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02
    0.02402656 = product of:
      0.04805312 = sum of:
        0.04805312 = product of:
          0.09610624 = sum of:
            0.09610624 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.09610624 = score(doc=2134,freq=2.0), product of:
                0.17742856 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050667387 = 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
  3. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.013729463 = product of:
      0.027458927 = sum of:
        0.027458927 = product of:
          0.054917853 = sum of:
            0.054917853 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.054917853 = score(doc=5002,freq=2.0), product of:
                0.17742856 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050667387 = 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
  4. Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996) 0.01
    0.010297097 = product of:
      0.020594195 = sum of:
        0.020594195 = product of:
          0.04118839 = sum of:
            0.04118839 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
              0.04118839 = score(doc=6967,freq=2.0), product of:
                0.17742856 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050667387 = 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