Document (#34933)

Author
McCain, K.E.
Title
Using tricitation to dissect the citation image : Conrad Hal Waddington and the rise of evolutionary developmental biology
Source
Journal of the American Society for Information Science and Technology. 60(2009) no.7, S.1301-1319
Year
2009
Abstract
An author's citation image is the set of authors with whom the author is cocited. When mapped using standard author cocitation analysis methods based on cited name co-occurrence counts across the entire citation database, the original context of cocitation (the focal author cocited with others) is lost. The citation image of Conrad Hal Waddington, a developmental biologist and evolutionary theorist, is mapped using both cocitation and tricitation approaches over three successive decades, 1975-1984, 1985-1994, and 1995-2004. All authors are tagged with a subject ID based on a principal components analysis of the cocitation data. The cocitation analyses place Waddington in a general subject context. The tricitation PFNets bring the major themes in articles citing Waddington into clearer focus. The changing scholarly landscape in which Waddington's work is used is demonstrated by changes in the citation image author set. These changes are associated with a shift from a primary focus on the mechanisms of evolutionary change (Waddington's work on canalization/genetic assimilation) to a resurgence of interest in Waddington's early experimental embryological work. The latter is linked to the emergence of evolutionary developmental biology, an interdisciplinary research area that examines the role of organismal development in evolutionary change.
Theme
Informetrie

Similar documents (author)

  1. McCain, K.W.: Co-cited author mapping as a valid representation of intellectual structure (1986) 5.54
    5.5426593 = sum of:
      5.5426593 = weight(author_txt:mccain in 5504) [ClassicSimilarity], result of:
        5.5426593 = fieldWeight in 5504, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.868255 = idf(docFreq=16, maxDocs=44421)
          0.625 = fieldNorm(doc=5504)
    
  2. McCain, K.W.: Mapping authors in intellectual space : a technical overview (1990) 5.54
    5.5426593 = sum of:
      5.5426593 = weight(author_txt:mccain in 6902) [ClassicSimilarity], result of:
        5.5426593 = fieldWeight in 6902, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.868255 = idf(docFreq=16, maxDocs=44421)
          0.625 = fieldNorm(doc=6902)
    
  3. McCain, K.W.: Core journal networks and and cocitation maps (1991) 5.54
    5.5426593 = sum of:
      5.5426593 = weight(author_txt:mccain in 6903) [ClassicSimilarity], result of:
        5.5426593 = fieldWeight in 6903, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.868255 = idf(docFreq=16, maxDocs=44421)
          0.625 = fieldNorm(doc=6903)
    
  4. McCain, K.W.: Assessing an author's influence using time series historiographic mapping : the oeuvre of Conrad Hal Waddington (2008) 5.54
    5.5426593 = sum of:
      5.5426593 = weight(author_txt:mccain in 2375) [ClassicSimilarity], result of:
        5.5426593 = fieldWeight in 2375, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.868255 = idf(docFreq=16, maxDocs=44421)
          0.625 = fieldNorm(doc=2375)
    
  5. McCain, K.W.: Eponymy and obliteration by incorporation : The case of the "Nash Equilibrium" (2011) 5.54
    5.5426593 = sum of:
      5.5426593 = weight(author_txt:mccain in 479) [ClassicSimilarity], result of:
        5.5426593 = fieldWeight in 479, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.868255 = idf(docFreq=16, maxDocs=44421)
          0.625 = fieldNorm(doc=479)
    

Similar documents (content)

  1. McCain, K.W.: Assessing an author's influence using time series historiographic mapping : the oeuvre of Conrad Hal Waddington (2008) 0.37
    0.37090236 = sum of:
      0.37090236 = product of:
        1.3246512 = sum of:
          0.08046294 = weight(abstract_txt:assimilation in 2375) [ClassicSimilarity], result of:
            0.08046294 = score(doc=2375,freq=1.0), product of:
              0.13837771 = queryWeight, product of:
                1.1682332 = boost
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.012731713 = queryNorm
              0.5814733 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
          0.0062160334 = weight(abstract_txt:with in 2375) [ClassicSimilarity], result of:
            0.0062160334 = score(doc=2375,freq=1.0), product of:
              0.039844137 = queryWeight, product of:
                1.2537434 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.012731713 = queryNorm
              0.15600874 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
          0.02306736 = weight(abstract_txt:work in 2375) [ClassicSimilarity], result of:
            0.02306736 = score(doc=2375,freq=2.0), product of:
              0.06887018 = queryWeight, product of:
                1.4274888 = boost
                3.7894108 = idf(docFreq=2729, maxDocs=44421)
                0.012731713 = queryNorm
              0.33493975 = fieldWeight in 2375, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.7894108 = idf(docFreq=2729, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
          0.07171599 = weight(abstract_txt:biology in 2375) [ClassicSimilarity], result of:
            0.07171599 = score(doc=2375,freq=1.0), product of:
              0.16146913 = queryWeight, product of:
                1.784663 = boost
                7.1063476 = idf(docFreq=98, maxDocs=44421)
                0.012731713 = queryNorm
              0.44414672 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1063476 = idf(docFreq=98, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
          0.7778918 = weight(title_txt:conrad in 2375) [ClassicSimilarity], result of:
            0.7778918 = score(doc=2375,freq=1.0), product of:
              0.3139918 = queryWeight, product of:
                2.488689 = boost
                9.909708 = idf(docFreq=5, maxDocs=44421)
                0.012731713 = queryNorm
              2.477427 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.909708 = idf(docFreq=5, maxDocs=44421)
                0.25 = fieldNorm(doc=2375)
          0.16938989 = weight(abstract_txt:developmental in 2375) [ClassicSimilarity], result of:
            0.16938989 = score(doc=2375,freq=1.0), product of:
              0.3278191 = queryWeight, product of:
                3.1143987 = boost
                8.267481 = idf(docFreq=30, maxDocs=44421)
                0.012731713 = queryNorm
              0.51671755 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.267481 = idf(docFreq=30, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
          0.19590718 = weight(abstract_txt:evolutionary in 2375) [ClassicSimilarity], result of:
            0.19590718 = score(doc=2375,freq=1.0), product of:
              0.42824513 = queryWeight, product of:
                4.595446 = boost
                7.319441 = idf(docFreq=79, maxDocs=44421)
                0.012731713 = queryNorm
              0.45746505 = fieldWeight in 2375, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.319441 = idf(docFreq=79, maxDocs=44421)
                0.0625 = fieldNorm(doc=2375)
        0.28 = coord(7/25)
    
  2. Colavizza, G.; Boyack, K.W.; Eck, N.J. van; Waltman, L.: ¬The closer the better : similarity of publication pairs at different cocitation levels (2018) 0.21
    0.21484314 = sum of:
      0.21484314 = product of:
        0.89517975 = sum of:
          0.025039509 = weight(abstract_txt:authors in 214) [ClassicSimilarity], result of:
            0.025039509 = score(doc=214,freq=1.0), product of:
              0.06899581 = queryWeight, product of:
                1.1666023 = boost
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.012731713 = queryNorm
              0.36291346 = fieldWeight in 214, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
          0.010988498 = weight(abstract_txt:with in 214) [ClassicSimilarity], result of:
            0.010988498 = score(doc=214,freq=2.0), product of:
              0.039844137 = queryWeight, product of:
                1.2537434 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.012731713 = queryNorm
              0.2757871 = fieldWeight in 214, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
          0.031377405 = weight(abstract_txt:changes in 214) [ClassicSimilarity], result of:
            0.031377405 = score(doc=214,freq=1.0), product of:
              0.08019554 = queryWeight, product of:
                1.2577275 = boost
                5.008144 = idf(docFreq=806, maxDocs=44421)
                0.012731713 = queryNorm
              0.39126125 = fieldWeight in 214, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.008144 = idf(docFreq=806, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
          0.20115736 = weight(abstract_txt:cocited in 214) [ClassicSimilarity], result of:
            0.20115736 = score(doc=214,freq=1.0), product of:
              0.27675542 = queryWeight, product of:
                2.3364663 = boost
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.012731713 = queryNorm
              0.7268416 = fieldWeight in 214, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
          0.061704326 = weight(abstract_txt:author in 214) [ClassicSimilarity], result of:
            0.061704326 = score(doc=214,freq=1.0), product of:
              0.15859613 = queryWeight, product of:
                2.5013402 = boost
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.012731713 = queryNorm
              0.38906577 = fieldWeight in 214, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
          0.5649126 = weight(abstract_txt:cocitation in 214) [ClassicSimilarity], result of:
            0.5649126 = score(doc=214,freq=4.0), product of:
              0.4709987 = queryWeight, product of:
                4.8193817 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.012731713 = queryNorm
              1.1993932 = fieldWeight in 214, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.078125 = fieldNorm(doc=214)
        0.24 = coord(6/25)
    
  3. Zhao, D.; Strotmann, A.: In-text author citation analysis : feasibility, benefits, and limitations (2014) 0.21
    0.21437834 = sum of:
      0.21437834 = product of:
        0.7656369 = sum of:
          0.028328968 = weight(abstract_txt:authors in 2535) [ClassicSimilarity], result of:
            0.028328968 = score(doc=2535,freq=2.0), product of:
              0.06899581 = queryWeight, product of:
                1.1666023 = boost
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.012731713 = queryNorm
              0.4105897 = fieldWeight in 2535, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.010766486 = weight(abstract_txt:with in 2535) [ClassicSimilarity], result of:
            0.010766486 = score(doc=2535,freq=3.0), product of:
              0.039844137 = queryWeight, product of:
                1.2537434 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.012731713 = queryNorm
              0.27021506 = fieldWeight in 2535, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.024765512 = weight(abstract_txt:using in 2535) [ClassicSimilarity], result of:
            0.024765512 = score(doc=2535,freq=4.0), product of:
              0.057313133 = queryWeight, product of:
                1.3022194 = boost
                3.4568708 = idf(docFreq=3806, maxDocs=44421)
                0.012731713 = queryNorm
              0.43210885 = fieldWeight in 2535, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4568708 = idf(docFreq=3806, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.016311089 = weight(abstract_txt:work in 2535) [ClassicSimilarity], result of:
            0.016311089 = score(doc=2535,freq=1.0), product of:
              0.06887018 = queryWeight, product of:
                1.4274888 = boost
                3.7894108 = idf(docFreq=2729, maxDocs=44421)
                0.012731713 = queryNorm
              0.23683818 = fieldWeight in 2535, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7894108 = idf(docFreq=2729, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.13962094 = weight(abstract_txt:author in 2535) [ClassicSimilarity], result of:
            0.13962094 = score(doc=2535,freq=8.0), product of:
              0.15859613 = queryWeight, product of:
                2.5013402 = boost
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.012731713 = queryNorm
              0.88035536 = fieldWeight in 2535, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.22628108 = weight(abstract_txt:citation in 2535) [ClassicSimilarity], result of:
            0.22628108 = score(doc=2535,freq=15.0), product of:
              0.19115864 = queryWeight, product of:
                3.0702832 = boost
                4.890223 = idf(docFreq=907, maxDocs=44421)
                0.012731713 = queryNorm
              1.1837345 = fieldWeight in 2535, product of:
                3.8729835 = tf(freq=15.0), with freq of:
                  15.0 = termFreq=15.0
                4.890223 = idf(docFreq=907, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
          0.31956282 = weight(abstract_txt:cocitation in 2535) [ClassicSimilarity], result of:
            0.31956282 = score(doc=2535,freq=2.0), product of:
              0.4709987 = queryWeight, product of:
                4.8193817 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.012731713 = queryNorm
              0.6784792 = fieldWeight in 2535, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.0625 = fieldNorm(doc=2535)
        0.28 = coord(7/25)
    
  4. White, H.D.: Author cocitation analysis and pearson's r (2003) 0.20
    0.19966705 = sum of:
      0.19966705 = product of:
        0.7130966 = sum of:
          0.03035879 = weight(abstract_txt:authors in 3119) [ClassicSimilarity], result of:
            0.03035879 = score(doc=3119,freq=3.0), product of:
              0.06899581 = queryWeight, product of:
                1.1666023 = boost
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.012731713 = queryNorm
              0.44000918 = fieldWeight in 3119, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.0076919487 = weight(abstract_txt:with in 3119) [ClassicSimilarity], result of:
            0.0076919487 = score(doc=3119,freq=2.0), product of:
              0.039844137 = queryWeight, product of:
                1.2537434 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.012731713 = queryNorm
              0.19305095 = fieldWeight in 3119, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.010834912 = weight(abstract_txt:using in 3119) [ClassicSimilarity], result of:
            0.010834912 = score(doc=3119,freq=1.0), product of:
              0.057313133 = queryWeight, product of:
                1.3022194 = boost
                3.4568708 = idf(docFreq=3806, maxDocs=44421)
                0.012731713 = queryNorm
              0.18904762 = fieldWeight in 3119, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4568708 = idf(docFreq=3806, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.06687781 = weight(abstract_txt:mapped in 3119) [ClassicSimilarity], result of:
            0.06687781 = score(doc=3119,freq=1.0), product of:
              0.16847217 = queryWeight, product of:
                1.8229533 = boost
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.012731713 = queryNorm
              0.39696652 = fieldWeight in 3119, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.14081015 = weight(abstract_txt:cocited in 3119) [ClassicSimilarity], result of:
            0.14081015 = score(doc=3119,freq=1.0), product of:
              0.27675542 = queryWeight, product of:
                2.3364663 = boost
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.012731713 = queryNorm
              0.5087891 = fieldWeight in 3119, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.061084166 = weight(abstract_txt:author in 3119) [ClassicSimilarity], result of:
            0.061084166 = score(doc=3119,freq=2.0), product of:
              0.15859613 = queryWeight, product of:
                2.5013402 = boost
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.012731713 = queryNorm
              0.38515547 = fieldWeight in 3119, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
          0.39543882 = weight(abstract_txt:cocitation in 3119) [ClassicSimilarity], result of:
            0.39543882 = score(doc=3119,freq=4.0), product of:
              0.4709987 = queryWeight, product of:
                4.8193817 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.012731713 = queryNorm
              0.8395752 = fieldWeight in 3119, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.0546875 = fieldNorm(doc=3119)
        0.28 = coord(7/25)
    
  5. White, H.D.: Pathfinder networks and author cocitation analysis : a remapping of paradigmatic information scientists (2003) 0.19
    0.18989582 = sum of:
      0.18989582 = product of:
        0.79123265 = sum of:
          0.05299865 = weight(abstract_txt:authors in 2459) [ClassicSimilarity], result of:
            0.05299865 = score(doc=2459,freq=7.0), product of:
              0.06899581 = queryWeight, product of:
                1.1666023 = boost
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.012731713 = queryNorm
              0.768143 = fieldWeight in 2459, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.6452923 = idf(docFreq=1159, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
          0.010766486 = weight(abstract_txt:with in 2459) [ClassicSimilarity], result of:
            0.010766486 = score(doc=2459,freq=3.0), product of:
              0.039844137 = queryWeight, product of:
                1.2537434 = boost
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.012731713 = queryNorm
              0.27021506 = fieldWeight in 2459, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4961398 = idf(docFreq=9949, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
          0.07643178 = weight(abstract_txt:mapped in 2459) [ClassicSimilarity], result of:
            0.07643178 = score(doc=2459,freq=1.0), product of:
              0.16847217 = queryWeight, product of:
                1.8229533 = boost
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.012731713 = queryNorm
              0.45367602 = fieldWeight in 2459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
          0.16092588 = weight(abstract_txt:cocited in 2459) [ClassicSimilarity], result of:
            0.16092588 = score(doc=2459,freq=1.0), product of:
              0.27675542 = queryWeight, product of:
                2.3364663 = boost
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.012731713 = queryNorm
              0.5814733 = fieldWeight in 2459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.303573 = idf(docFreq=10, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
          0.09872692 = weight(abstract_txt:author in 2459) [ClassicSimilarity], result of:
            0.09872692 = score(doc=2459,freq=4.0), product of:
              0.15859613 = queryWeight, product of:
                2.5013402 = boost
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.012731713 = queryNorm
              0.62250525 = fieldWeight in 2459, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.980042 = idf(docFreq=829, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
          0.39138293 = weight(abstract_txt:cocitation in 2459) [ClassicSimilarity], result of:
            0.39138293 = score(doc=2459,freq=3.0), product of:
              0.4709987 = queryWeight, product of:
                4.8193817 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.012731713 = queryNorm
              0.8309639 = fieldWeight in 2459, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.0625 = fieldNorm(doc=2459)
        0.24 = coord(6/25)