Document (#32584)

Author
Waltman, L.
Eck, N.J. van
Title
Some comments on the question whether co-occurrence data should be normalized
Source
Journal of the American Society for Information Science and Technology. 58(2007) no.11, S.1701-1703
Year
2007
Abstract
In a recent article in JASIST, L. Leydesdorff and L. Vaughan (2006) asserted that raw cocitation data should be analyzed directly, without first applying a normalization such as the Pearson correlation. In this communication, it is argued that there is nothing wrong with the widely adopted practice of normalizing cocitation data. One of the arguments put forward by Leydesdorff and Vaughan turns out to depend crucially on incorrect multidimensional scaling maps that are due to an error in the PROXSCAL program in SPSS.

Similar documents (author)

  1. Waltman, L.; Schreiber, M.: On the calculation of percentile-based bibliometric indicators (2013) 4.49
    4.4944186 = sum of:
      4.4944186 = weight(author_txt:waltman in 616) [ClassicSimilarity], result of:
        4.4944186 = fieldWeight in 616, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.988837 = idf(docFreq=14, maxDocs=44218)
          0.5 = fieldNorm(doc=616)
    
  2. Waltman, L.; Costas, R.: F1000 Recommendations as a potential new data source for research evaluation : a comparison with citations (2014) 4.49
    4.4944186 = sum of:
      4.4944186 = weight(author_txt:waltman in 1212) [ClassicSimilarity], result of:
        4.4944186 = fieldWeight in 1212, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.988837 = idf(docFreq=14, maxDocs=44218)
          0.5 = fieldNorm(doc=1212)
    
  3. Eck, N.J. van; Waltman, L.: Appropriate similarity measures for author co-citation analysis (2008) 3.93
    3.9326162 = sum of:
      3.9326162 = weight(author_txt:waltman in 2008) [ClassicSimilarity], result of:
        3.9326162 = fieldWeight in 2008, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.988837 = idf(docFreq=14, maxDocs=44218)
          0.4375 = fieldNorm(doc=2008)
    
  4. Eck, N.J. van; Waltman, L.: How to normalize cooccurrence data? : an analysis of some well-known similarity measures (2009) 3.93
    3.9326162 = sum of:
      3.9326162 = weight(author_txt:waltman in 2942) [ClassicSimilarity], result of:
        3.9326162 = fieldWeight in 2942, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.988837 = idf(docFreq=14, maxDocs=44218)
          0.4375 = fieldNorm(doc=2942)
    
  5. Waltman, L.; Eck, N.J. van: ¬The relation between eigenfactor, audience factor, and influence weight (2010) 3.93
    3.9326162 = sum of:
      3.9326162 = weight(author_txt:waltman in 3596) [ClassicSimilarity], result of:
        3.9326162 = fieldWeight in 3596, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.988837 = idf(docFreq=14, maxDocs=44218)
          0.4375 = fieldNorm(doc=3596)
    

Similar documents (content)

  1. Zhou, Q.; Leydesdorff, L.: ¬The normalization of occurrence and co-occurrence matrices in bibliometrics using Cosine similarities and Ochiai coefficients (2016) 0.33
    0.33135965 = sum of:
      0.33135965 = product of:
        0.9204434 = sum of:
          0.15122026 = weight(abstract_txt:occurrence in 3161) [ClassicSimilarity], result of:
            0.15122026 = score(doc=3161,freq=5.0), product of:
              0.12759517 = queryWeight, product of:
                1.026469 = boost
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.018322626 = queryNorm
              1.1851566 = fieldWeight in 3161, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.072768554 = weight(abstract_txt:multidimensional in 3161) [ClassicSimilarity], result of:
            0.072768554 = score(doc=3161,freq=1.0), product of:
              0.13398209 = queryWeight, product of:
                1.0518458 = boost
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.018322626 = queryNorm
              0.5431215 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.008643718 = weight(abstract_txt:that in 3161) [ClassicSimilarity], result of:
            0.008643718 = score(doc=3161,freq=1.0), product of:
              0.046693712 = queryWeight, product of:
                1.07552 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018322626 = queryNorm
              0.18511525 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.0870334 = weight(abstract_txt:scaling in 3161) [ClassicSimilarity], result of:
            0.0870334 = score(doc=3161,freq=1.0), product of:
              0.15096453 = queryWeight, product of:
                1.1165191 = boost
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.018322626 = queryNorm
              0.57651556 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.09108566 = weight(abstract_txt:normalized in 3161) [ClassicSimilarity], result of:
            0.09108566 = score(doc=3161,freq=1.0), product of:
              0.15561481 = queryWeight, product of:
                1.1335852 = boost
                7.4921947 = idf(docFreq=66, maxDocs=44218)
                0.018322626 = queryNorm
              0.5853277 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4921947 = idf(docFreq=66, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.13371454 = weight(abstract_txt:normalization in 3161) [ClassicSimilarity], result of:
            0.13371454 = score(doc=3161,freq=2.0), product of:
              0.1595365 = queryWeight, product of:
                1.1477802 = boost
                7.5860133 = idf(docFreq=60, maxDocs=44218)
                0.018322626 = queryNorm
              0.83814394 = fieldWeight in 3161, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.5860133 = idf(docFreq=60, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.14267687 = weight(abstract_txt:pearson in 3161) [ClassicSimilarity], result of:
            0.14267687 = score(doc=3161,freq=1.0), product of:
              0.20988753 = queryWeight, product of:
                1.3165035 = boost
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.018322626 = queryNorm
              0.67977774 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.0377315 = weight(abstract_txt:should in 3161) [ClassicSimilarity], result of:
            0.0377315 = score(doc=3161,freq=1.0), product of:
              0.108950764 = queryWeight, product of:
                1.3414017 = boost
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.018322626 = queryNorm
              0.34631696 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
          0.1955689 = weight(abstract_txt:cocitation in 3161) [ClassicSimilarity], result of:
            0.1955689 = score(doc=3161,freq=1.0), product of:
              0.3263078 = queryWeight, product of:
                2.3214397 = boost
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.018322626 = queryNorm
              0.5993387 = fieldWeight in 3161, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.078125 = fieldNorm(doc=3161)
        0.36 = coord(9/25)
    
  2. White, H.D.: Pathfinder networks and author cocitation analysis : a remapping of paradigmatic information scientists (2003) 0.16
    0.16084252 = sum of:
      0.16084252 = product of:
        0.57443756 = sum of:
          0.058214843 = weight(abstract_txt:multidimensional in 1459) [ClassicSimilarity], result of:
            0.058214843 = score(doc=1459,freq=1.0), product of:
              0.13398209 = queryWeight, product of:
                1.0518458 = boost
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.018322626 = queryNorm
              0.4344972 = fieldWeight in 1459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.011977087 = weight(abstract_txt:that in 1459) [ClassicSimilarity], result of:
            0.011977087 = score(doc=1459,freq=3.0), product of:
              0.046693712 = queryWeight, product of:
                1.07552 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018322626 = queryNorm
              0.2565032 = fieldWeight in 1459, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.06962672 = weight(abstract_txt:scaling in 1459) [ClassicSimilarity], result of:
            0.06962672 = score(doc=1459,freq=1.0), product of:
              0.15096453 = queryWeight, product of:
                1.1165191 = boost
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.018322626 = queryNorm
              0.46121246 = fieldWeight in 1459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.114141494 = weight(abstract_txt:pearson in 1459) [ClassicSimilarity], result of:
            0.114141494 = score(doc=1459,freq=1.0), product of:
              0.20988753 = queryWeight, product of:
                1.3165035 = boost
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.018322626 = queryNorm
              0.54382217 = fieldWeight in 1459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.030185198 = weight(abstract_txt:should in 1459) [ClassicSimilarity], result of:
            0.030185198 = score(doc=1459,freq=1.0), product of:
              0.108950764 = queryWeight, product of:
                1.3414017 = boost
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.018322626 = queryNorm
              0.27705356 = fieldWeight in 1459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.019304033 = weight(abstract_txt:data in 1459) [ClassicSimilarity], result of:
            0.019304033 = score(doc=1459,freq=1.0), product of:
              0.09257564 = queryWeight, product of:
                1.5143899 = boost
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.018322626 = queryNorm
              0.20852174 = fieldWeight in 1459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
          0.2709882 = weight(abstract_txt:cocitation in 1459) [ClassicSimilarity], result of:
            0.2709882 = score(doc=1459,freq=3.0), product of:
              0.3263078 = queryWeight, product of:
                2.3214397 = boost
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.018322626 = queryNorm
              0.83046806 = fieldWeight in 1459, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.0625 = fieldNorm(doc=1459)
        0.28 = coord(7/25)
    
  3. Leydesdorff, L.; Vaughan, L.: Co-occurrence matrices and their applications in information science : extending ACA to the Web environment (2006) 0.13
    0.12896399 = sum of:
      0.12896399 = product of:
        0.53735 = sum of:
          0.07651207 = weight(abstract_txt:occurrence in 6113) [ClassicSimilarity], result of:
            0.07651207 = score(doc=6113,freq=2.0), product of:
              0.12759517 = queryWeight, product of:
                1.026469 = boost
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.018322626 = queryNorm
              0.59964705 = fieldWeight in 6113, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.006914974 = weight(abstract_txt:that in 6113) [ClassicSimilarity], result of:
            0.006914974 = score(doc=6113,freq=1.0), product of:
              0.046693712 = queryWeight, product of:
                1.07552 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018322626 = queryNorm
              0.1480922 = fieldWeight in 6113, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.114141494 = weight(abstract_txt:pearson in 6113) [ClassicSimilarity], result of:
            0.114141494 = score(doc=6113,freq=1.0), product of:
              0.20988753 = queryWeight, product of:
                1.3165035 = boost
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.018322626 = queryNorm
              0.54382217 = fieldWeight in 6113, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.030185198 = weight(abstract_txt:should in 6113) [ClassicSimilarity], result of:
            0.030185198 = score(doc=6113,freq=1.0), product of:
              0.108950764 = queryWeight, product of:
                1.3414017 = boost
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.018322626 = queryNorm
              0.27705356 = fieldWeight in 6113, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.038608067 = weight(abstract_txt:data in 6113) [ClassicSimilarity], result of:
            0.038608067 = score(doc=6113,freq=4.0), product of:
              0.09257564 = queryWeight, product of:
                1.5143899 = boost
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.018322626 = queryNorm
              0.41704348 = fieldWeight in 6113, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.2709882 = weight(abstract_txt:cocitation in 6113) [ClassicSimilarity], result of:
            0.2709882 = score(doc=6113,freq=3.0), product of:
              0.3263078 = queryWeight, product of:
                2.3214397 = boost
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.018322626 = queryNorm
              0.83046806 = fieldWeight in 6113, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
        0.24 = coord(6/25)
    
  4. Sugimoto, C.R.; Pratt , J.A.; Hauser, K.: Using field cocitation analysis to assess reciprocal and shared impact of LIS/MIS fields (2008) 0.12
    0.1217446 = sum of:
      0.1217446 = product of:
        0.5072692 = sum of:
          0.058214843 = weight(abstract_txt:multidimensional in 1959) [ClassicSimilarity], result of:
            0.058214843 = score(doc=1959,freq=1.0), product of:
              0.13398209 = queryWeight, product of:
                1.0518458 = boost
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.018322626 = queryNorm
              0.4344972 = fieldWeight in 1959, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9519553 = idf(docFreq=114, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
          0.006914974 = weight(abstract_txt:that in 1959) [ClassicSimilarity], result of:
            0.006914974 = score(doc=1959,freq=1.0), product of:
              0.046693712 = queryWeight, product of:
                1.07552 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018322626 = queryNorm
              0.1480922 = fieldWeight in 1959, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
          0.06962672 = weight(abstract_txt:scaling in 1959) [ClassicSimilarity], result of:
            0.06962672 = score(doc=1959,freq=1.0), product of:
              0.15096453 = queryWeight, product of:
                1.1165191 = boost
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.018322626 = queryNorm
              0.46121246 = fieldWeight in 1959, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3793993 = idf(docFreq=74, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
          0.13194767 = weight(abstract_txt:spss in 1959) [ClassicSimilarity], result of:
            0.13194767 = score(doc=1959,freq=1.0), product of:
              0.23118451 = queryWeight, product of:
                1.3816819 = boost
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.018322626 = queryNorm
              0.5707461 = fieldWeight in 1959, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
          0.019304033 = weight(abstract_txt:data in 1959) [ClassicSimilarity], result of:
            0.019304033 = score(doc=1959,freq=1.0), product of:
              0.09257564 = queryWeight, product of:
                1.5143899 = boost
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.018322626 = queryNorm
              0.20852174 = fieldWeight in 1959, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
          0.22126095 = weight(abstract_txt:cocitation in 1959) [ClassicSimilarity], result of:
            0.22126095 = score(doc=1959,freq=2.0), product of:
              0.3263078 = queryWeight, product of:
                2.3214397 = boost
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.018322626 = queryNorm
              0.67807436 = fieldWeight in 1959, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.6715355 = idf(docFreq=55, maxDocs=44218)
                0.0625 = fieldNorm(doc=1959)
        0.24 = coord(6/25)
    
  5. Leydesdorff, L.: On the normalization and visualization of author co-citation data : Salton's Cosine versus the Jaccard index (2008) 0.11
    0.10571909 = sum of:
      0.10571909 = product of:
        0.4404962 = sum of:
          0.1171347 = weight(abstract_txt:occurrence in 1341) [ClassicSimilarity], result of:
            0.1171347 = score(doc=1341,freq=3.0), product of:
              0.12759517 = queryWeight, product of:
                1.026469 = boost
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.018322626 = queryNorm
              0.9180183 = fieldWeight in 1341, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.784232 = idf(docFreq=135, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
          0.008643718 = weight(abstract_txt:that in 1341) [ClassicSimilarity], result of:
            0.008643718 = score(doc=1341,freq=1.0), product of:
              0.046693712 = queryWeight, product of:
                1.07552 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018322626 = queryNorm
              0.18511525 = fieldWeight in 1341, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
          0.09455046 = weight(abstract_txt:normalization in 1341) [ClassicSimilarity], result of:
            0.09455046 = score(doc=1341,freq=1.0), product of:
              0.1595365 = queryWeight, product of:
                1.1477802 = boost
                7.5860133 = idf(docFreq=60, maxDocs=44218)
                0.018322626 = queryNorm
              0.59265727 = fieldWeight in 1341, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5860133 = idf(docFreq=60, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
          0.14267687 = weight(abstract_txt:pearson in 1341) [ClassicSimilarity], result of:
            0.14267687 = score(doc=1341,freq=1.0), product of:
              0.20988753 = queryWeight, product of:
                1.3165035 = boost
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.018322626 = queryNorm
              0.67977774 = fieldWeight in 1341, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.701155 = idf(docFreq=19, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
          0.05336039 = weight(abstract_txt:should in 1341) [ClassicSimilarity], result of:
            0.05336039 = score(doc=1341,freq=2.0), product of:
              0.108950764 = queryWeight, product of:
                1.3414017 = boost
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.018322626 = queryNorm
              0.48976612 = fieldWeight in 1341, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.432857 = idf(docFreq=1427, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
          0.024130043 = weight(abstract_txt:data in 1341) [ClassicSimilarity], result of:
            0.024130043 = score(doc=1341,freq=1.0), product of:
              0.09257564 = queryWeight, product of:
                1.5143899 = boost
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.018322626 = queryNorm
              0.26065218 = fieldWeight in 1341, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3363478 = idf(docFreq=4274, maxDocs=44218)
                0.078125 = fieldNorm(doc=1341)
        0.24 = coord(6/25)