Document (#7399)

Author
Robertson, S.E.
Title
¬The probabilistic character of relevance
Source
Information processing and management. 13(1977), S.247-251
Year
1977

Similar documents (author)

  1. Robertson, M.A.: Windows 3.0 for the online searcher (1991) 4.57
    4.574651 = sum of:
      4.574651 = weight(author_txt:robertson in 591) [ClassicSimilarity], result of:
        4.574651 = fieldWeight in 591, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.319441 = idf(docFreq=79, maxDocs=44421)
          0.625 = fieldNorm(doc=591)
    
  2. Robertson, S.E.: Some recent theories and models in information retrieval (1980) 4.57
    4.574651 = sum of:
      4.574651 = weight(author_txt:robertson in 1325) [ClassicSimilarity], result of:
        4.574651 = fieldWeight in 1325, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.319441 = idf(docFreq=79, maxDocs=44421)
          0.625 = fieldNorm(doc=1325)
    
  3. Robertson, S.E.: Theories and models in information retrieval (1977) 4.57
    4.574651 = sum of:
      4.574651 = weight(author_txt:robertson in 1843) [ClassicSimilarity], result of:
        4.574651 = fieldWeight in 1843, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.319441 = idf(docFreq=79, maxDocs=44421)
          0.625 = fieldNorm(doc=1843)
    
  4. Robertson, S.E.: On term selection for query expansion (1990) 4.57
    4.574651 = sum of:
      4.574651 = weight(author_txt:robertson in 2649) [ClassicSimilarity], result of:
        4.574651 = fieldWeight in 2649, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.319441 = idf(docFreq=79, maxDocs=44421)
          0.625 = fieldNorm(doc=2649)
    
  5. Robertson, S.E.: On relevance weight estimation and query expansion (1986) 4.57
    4.574651 = sum of:
      4.574651 = weight(author_txt:robertson in 3874) [ClassicSimilarity], result of:
        4.574651 = fieldWeight in 3874, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.319441 = idf(docFreq=79, maxDocs=44421)
          0.625 = fieldNorm(doc=3874)
    

Similar documents (content)

  1. Dominich, S.: ¬A unified mathematical definition of classical information retrieval (2000) 0.80
    0.8011479 = sum of:
      0.8011479 = product of:
        1.2017218 = sum of:
          0.335036 = weight(abstract_txt:relevance in 5768) [ClassicSimilarity], result of:
            0.335036 = score(doc=5768,freq=1.0), product of:
              0.3624804 = queryWeight, product of:
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.07353242 = queryNorm
              0.92428726 = fieldWeight in 5768, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.1875 = fieldNorm(doc=5768)
          0.8666858 = weight(abstract_txt:probabilistic in 5768) [ClassicSimilarity], result of:
            0.8666858 = score(doc=5768,freq=1.0), product of:
              0.68306917 = queryWeight, product of:
                1.3727456 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.07353242 = queryNorm
              1.2688112 = fieldWeight in 5768, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.1875 = fieldNorm(doc=5768)
        0.6666667 = coord(2/3)
    
  2. Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995) 0.57
    0.56649715 = sum of:
      0.56649715 = product of:
        0.8497457 = sum of:
          0.23690623 = weight(abstract_txt:relevance in 33) [ClassicSimilarity], result of:
            0.23690623 = score(doc=33,freq=2.0), product of:
              0.3624804 = queryWeight, product of:
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.07353242 = queryNorm
              0.65356976 = fieldWeight in 33, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.09375 = fieldNorm(doc=33)
          0.61283946 = weight(abstract_txt:probabilistic in 33) [ClassicSimilarity], result of:
            0.61283946 = score(doc=33,freq=2.0), product of:
              0.68306917 = queryWeight, product of:
                1.3727456 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.07353242 = queryNorm
              0.8971851 = fieldWeight in 33, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.09375 = fieldNorm(doc=33)
        0.6666667 = coord(2/3)
    
  3. Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976) 0.56
    0.5627165 = sum of:
      0.5627165 = product of:
        0.8440747 = sum of:
          0.33850795 = weight(abstract_txt:relevance in 139) [ClassicSimilarity], result of:
            0.33850795 = score(doc=139,freq=3.0), product of:
              0.3624804 = queryWeight, product of:
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.07353242 = queryNorm
              0.93386555 = fieldWeight in 139, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.109375 = fieldNorm(doc=139)
          0.5055668 = weight(abstract_txt:probabilistic in 139) [ClassicSimilarity], result of:
            0.5055668 = score(doc=139,freq=1.0), product of:
              0.68306917 = queryWeight, product of:
                1.3727456 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.07353242 = queryNorm
              0.7401399 = fieldWeight in 139, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.109375 = fieldNorm(doc=139)
        0.6666667 = coord(2/3)
    
  4. Bodoff, D.; Wong, S.P.-S.: Documents and queries as random variables : history and implications (2006) 0.55
    0.548599 = sum of:
      0.548599 = product of:
        0.8228985 = sum of:
          0.19742186 = weight(abstract_txt:relevance in 318) [ClassicSimilarity], result of:
            0.19742186 = score(doc=318,freq=2.0), product of:
              0.3624804 = queryWeight, product of:
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.07353242 = queryNorm
              0.5446415 = fieldWeight in 318, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.078125 = fieldNorm(doc=318)
          0.62547666 = weight(abstract_txt:probabilistic in 318) [ClassicSimilarity], result of:
            0.62547666 = score(doc=318,freq=3.0), product of:
              0.68306917 = queryWeight, product of:
                1.3727456 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.07353242 = queryNorm
              0.91568565 = fieldWeight in 318, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.078125 = fieldNorm(doc=318)
        0.6666667 = coord(2/3)
    
  5. Wong, S.K.M.; Yao, Y.Y.: Query formulation in linear retrieval models (1990) 0.53
    0.5340986 = sum of:
      0.5340986 = product of:
        0.80114794 = sum of:
          0.22335735 = weight(abstract_txt:relevance in 3639) [ClassicSimilarity], result of:
            0.22335735 = score(doc=3639,freq=1.0), product of:
              0.3624804 = queryWeight, product of:
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.07353242 = queryNorm
              0.6161915 = fieldWeight in 3639, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.929532 = idf(docFreq=872, maxDocs=44421)
                0.125 = fieldNorm(doc=3639)
          0.57779056 = weight(abstract_txt:probabilistic in 3639) [ClassicSimilarity], result of:
            0.57779056 = score(doc=3639,freq=1.0), product of:
              0.68306917 = queryWeight, product of:
                1.3727456 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.07353242 = queryNorm
              0.8458742 = fieldWeight in 3639, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.125 = fieldNorm(doc=3639)
        0.6666667 = coord(2/3)