Document (#34934)

Author

Archambault, E.
Campbell, D
Gingras, Y.
Larivière, V.

Title

Comparing bibliometric statistics obtained from the Web of Science and Scopus

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.7, S.1320-1326

Year

2009

Abstract

For more than 40 years, the Institute for Scientific Information (ISI, now part of Thomson Reuters) produced the only available bibliographic databases from which bibliometricians could compile large-scale bibliometric indicators. ISI's citation indexes, now regrouped under the Web of Science (WoS), were the major sources of bibliometric data until 2004, when Scopus was launched by the publisher Reed Elsevier. For those who perform bibliometric analyses and comparisons of countries or institutions, the existence of these two major databases raises the important question of the comparability and stability of statistics obtained from different data sources. This paper uses macrolevel bibliometric indicators to compare results obtained from the WoS and Scopus. It shows that the correlations between the measures obtained with both databases for the number of papers and the number of citations received by countries, as well as for their ranks, are extremely high. There is also a very high correlation when countries' papers are broken down by field. The paper thus provides evidence that indicators of scientific production and citations at the country level are stable and largely independent of the database.

Theme

Informetrie

Object

Web of Science
Scopus

Similar documents (author)

1. Larivière, V.; Archambault, E.; Gingras, Y.: Long-term variations in the aging of scientific literature : from exponential growth to steady-state science (1900-2004) (2008) 4.04

   4.041319 = sum of:
     4.041319 = product of:
       5.388425 = sum of:
         1.3102514 = weight(author_txt:larivière in 2357) [ClassicSimilarity], result of:
           1.3102514 = score(doc=2357,freq=1.0), product of:
             0.42739543 = queryWeight, product of:
               1.0412399 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.050209474 = queryNorm
             3.0656652 = fieldWeight in 2357, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.375 = fieldNorm(doc=2357)
         1.74441 = weight(author_txt:gingras in 2357) [ClassicSimilarity], result of:
           1.74441 = score(doc=2357,freq=1.0), product of:
             0.5172405 = queryWeight, product of:
               1.1454657 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.050209474 = queryNorm
             3.3725317 = fieldWeight in 2357, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.375 = fieldNorm(doc=2357)
         2.3337636 = weight(author_txt:archambault in 2357) [ClassicSimilarity], result of:
           2.3337636 = score(doc=2357,freq=1.0), product of:
             0.62800735 = queryWeight, product of:
               1.262171 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.050209474 = queryNorm
             3.7161405 = fieldWeight in 2357, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.375 = fieldNorm(doc=2357)
       0.75 = coord(3/4)
   

2. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 4.04

   4.041319 = sum of:
     4.041319 = product of:
       5.388425 = sum of:
         1.3102514 = weight(author_txt:larivière in 3763) [ClassicSimilarity], result of:
           1.3102514 = score(doc=3763,freq=1.0), product of:
             0.42739543 = queryWeight, product of:
               1.0412399 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.050209474 = queryNorm
             3.0656652 = fieldWeight in 3763, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.375 = fieldNorm(doc=3763)
         1.74441 = weight(author_txt:gingras in 3763) [ClassicSimilarity], result of:
           1.74441 = score(doc=3763,freq=1.0), product of:
             0.5172405 = queryWeight, product of:
               1.1454657 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.050209474 = queryNorm
             3.3725317 = fieldWeight in 3763, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.375 = fieldNorm(doc=3763)
         2.3337636 = weight(author_txt:archambault in 3763) [ClassicSimilarity], result of:
           2.3337636 = score(doc=3763,freq=1.0), product of:
             0.62800735 = queryWeight, product of:
               1.262171 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.050209474 = queryNorm
             3.7161405 = fieldWeight in 3763, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.375 = fieldNorm(doc=3763)
       0.75 = coord(3/4)
   

3. Larivière, V.; Archambault, V.; Gingras, Y.; Vignola-Gagné, E.: ¬The place of serials in referencing practices : comparing natural sciences and engineering with social sciences and humanities (2006) 3.37

   3.3677652 = sum of:
     3.3677652 = product of:
       4.4903536 = sum of:
         1.091876 = weight(author_txt:larivière in 107) [ClassicSimilarity], result of:
           1.091876 = score(doc=107,freq=1.0), product of:
             0.42739543 = queryWeight, product of:
               1.0412399 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.050209474 = queryNorm
             2.5547209 = fieldWeight in 107, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.3125 = fieldNorm(doc=107)
         1.4536749 = weight(author_txt:gingras in 107) [ClassicSimilarity], result of:
           1.4536749 = score(doc=107,freq=1.0), product of:
             0.5172405 = queryWeight, product of:
               1.1454657 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.050209474 = queryNorm
             2.810443 = fieldWeight in 107, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.3125 = fieldNorm(doc=107)
         1.9448029 = weight(author_txt:archambault in 107) [ClassicSimilarity], result of:
           1.9448029 = score(doc=107,freq=1.0), product of:
             0.62800735 = queryWeight, product of:
               1.262171 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.050209474 = queryNorm
             3.0967836 = fieldWeight in 107, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.3125 = fieldNorm(doc=107)
       0.75 = coord(3/4)
   

4. Larivière, V.; Gingras, Y.: On the relationship between interdisciplinarity and scientific impact (2009) 2.04

   2.0364408 = sum of:
     2.0364408 = product of:
       4.0728817 = sum of:
         1.7470016 = weight(author_txt:larivière in 303) [ClassicSimilarity], result of:
           1.7470016 = score(doc=303,freq=1.0), product of:
             0.42739543 = queryWeight, product of:
               1.0412399 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.050209474 = queryNorm
             4.0875535 = fieldWeight in 303, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.5 = fieldNorm(doc=303)
         2.32588 = weight(author_txt:gingras in 303) [ClassicSimilarity], result of:
           2.32588 = score(doc=303,freq=1.0), product of:
             0.5172405 = queryWeight, product of:
               1.1454657 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.050209474 = queryNorm
             4.496709 = fieldWeight in 303, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.5 = fieldNorm(doc=303)
       0.5 = coord(2/4)
   

5. Larivière, V.; Gingras, Y.: ¬The impact factor's Matthew Effect : a natural experiment in bibliometrics (2010) 2.04

   2.0364408 = sum of:
     2.0364408 = product of:
       4.0728817 = sum of:
         1.7470016 = weight(author_txt:larivière in 325) [ClassicSimilarity], result of:
           1.7470016 = score(doc=325,freq=1.0), product of:
             0.42739543 = queryWeight, product of:
               1.0412399 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.050209474 = queryNorm
             4.0875535 = fieldWeight in 325, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.5 = fieldNorm(doc=325)
         2.32588 = weight(author_txt:gingras in 325) [ClassicSimilarity], result of:
           2.32588 = score(doc=325,freq=1.0), product of:
             0.5172405 = queryWeight, product of:
               1.1454657 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.050209474 = queryNorm
             4.496709 = fieldWeight in 325, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.5 = fieldNorm(doc=325)
       0.5 = coord(2/4)
   

Similar documents (content)

1. Zuccala, A.; Guns, R.; Cornacchia, R.; Bod, R.: Can we rank scholarly book publishers? : a bibliometric experiment with the field of history (2015) 0.24

   0.23570846 = sum of:
     0.23570846 = product of:
       0.73658895 = sum of:
         0.070777 = weight(abstract_txt:elsevier in 3037) [ClassicSimilarity], result of:
           0.070777 = score(doc=3037,freq=1.0), product of:
             0.14575087 = queryWeight, product of:
               1.0257856 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.018287467 = queryNorm
             0.48560262 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.021348048 = weight(abstract_txt:number in 3037) [ClassicSimilarity], result of:
           0.021348048 = score(doc=3037,freq=1.0), product of:
             0.082590826 = queryWeight, product of:
               1.0920234 = boost
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.018287467 = queryNorm
             0.25847965 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.13442771 = weight(abstract_txt:bibliometricians in 3037) [ClassicSimilarity], result of:
           0.13442771 = score(doc=3037,freq=1.0), product of:
             0.2235333 = queryWeight, product of:
               1.2703463 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.018287467 = queryNorm
             0.60137665 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.06468427 = weight(abstract_txt:citations in 3037) [ClassicSimilarity], result of:
           0.06468427 = score(doc=3037,freq=2.0), product of:
             0.13726154 = queryWeight, product of:
               1.4077983 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.018287467 = queryNorm
             0.47124836 = fieldWeight in 3037, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.025364285 = weight(abstract_txt:from in 3037) [ClassicSimilarity], result of:
           0.025364285 = score(doc=3037,freq=4.0), product of:
             0.07353568 = queryWeight, product of:
               1.4572366 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.018287467 = queryNorm
             0.34492487 = fieldWeight in 3037, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.07462345 = weight(abstract_txt:statistics in 3037) [ClassicSimilarity], result of:
           0.07462345 = score(doc=3037,freq=1.0), product of:
             0.19022894 = queryWeight, product of:
               1.6573122 = boost
               6.2765174 = idf(docFreq=226, maxDocs=44421)
               0.018287467 = queryNorm
             0.39228234 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2765174 = idf(docFreq=226, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.16830896 = weight(abstract_txt:scopus in 3037) [ClassicSimilarity], result of:
           0.16830896 = score(doc=3037,freq=1.0), product of:
             0.37450844 = queryWeight, product of:
               2.848016 = boost
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.018287467 = queryNorm
             0.449413 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
         0.17705521 = weight(abstract_txt:bibliometric in 3037) [ClassicSimilarity], result of:
           0.17705521 = score(doc=3037,freq=1.0), product of:
             0.45928138 = queryWeight, product of:
               4.0716968 = boost
               6.168078 = idf(docFreq=252, maxDocs=44421)
               0.018287467 = queryNorm
             0.38550487 = fieldWeight in 3037, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.168078 = idf(docFreq=252, maxDocs=44421)
               0.0625 = fieldNorm(doc=3037)
       0.32 = coord(8/25)
   

2. Kousha, K.; Thelwall, M.: Patent citation analysis with Google (2017) 0.23

   0.22782272 = sum of:
     0.22782272 = product of:
       0.6328409 = sum of:
         0.017230557 = weight(abstract_txt:science in 4317) [ClassicSimilarity], result of:
           0.017230557 = score(doc=4317,freq=1.0), product of:
             0.07159663 = queryWeight, product of:
               1.0167456 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.018287467 = queryNorm
             0.24066156 = fieldWeight in 4317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.021509683 = weight(abstract_txt:when in 4317) [ClassicSimilarity], result of:
           0.021509683 = score(doc=4317,freq=1.0), product of:
             0.08300719 = queryWeight, product of:
               1.0947725 = boost
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.018287467 = queryNorm
             0.25913036 = fieldWeight in 4317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.030001972 = weight(abstract_txt:scientific in 4317) [ClassicSimilarity], result of:
           0.030001972 = score(doc=4317,freq=1.0), product of:
             0.103623815 = queryWeight, product of:
               1.2231953 = boost
               4.6324444 = idf(docFreq=1174, maxDocs=44421)
               0.018287467 = queryNorm
             0.28952777 = fieldWeight in 4317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6324444 = idf(docFreq=1174, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.030490149 = weight(abstract_txt:major in 4317) [ClassicSimilarity], result of:
           0.030490149 = score(doc=4317,freq=1.0), product of:
             0.10474486 = queryWeight, product of:
               1.229794 = boost
               4.657435 = idf(docFreq=1145, maxDocs=44421)
               0.018287467 = queryNorm
             0.29108968 = fieldWeight in 4317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.657435 = idf(docFreq=1145, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.04405476 = weight(abstract_txt:papers in 4317) [ClassicSimilarity], result of:
           0.04405476 = score(doc=4317,freq=1.0), product of:
             0.13387154 = queryWeight, product of:
               1.3903052 = boost
               5.2653174 = idf(docFreq=623, maxDocs=44421)
               0.018287467 = queryNorm
             0.32908234 = fieldWeight in 4317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2653174 = idf(docFreq=623, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.1210132 = weight(abstract_txt:citations in 4317) [ClassicSimilarity], result of:
           0.1210132 = score(doc=4317,freq=7.0), product of:
             0.13726154 = queryWeight, product of:
               1.4077983 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.018287467 = queryNorm
             0.881625 = fieldWeight in 4317, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.021966115 = weight(abstract_txt:from in 4317) [ClassicSimilarity], result of:
           0.021966115 = score(doc=4317,freq=3.0), product of:
             0.07353568 = queryWeight, product of:
               1.4572366 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.018287467 = queryNorm
             0.29871368 = fieldWeight in 4317, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.055054773 = weight(abstract_txt:databases in 4317) [ClassicSimilarity], result of:
           0.055054773 = score(doc=4317,freq=2.0), product of:
             0.14111617 = queryWeight, product of:
               1.748236 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.018287467 = queryNorm
             0.39013794 = fieldWeight in 4317, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
         0.29151967 = weight(abstract_txt:scopus in 4317) [ClassicSimilarity], result of:
           0.29151967 = score(doc=4317,freq=3.0), product of:
             0.37450844 = queryWeight, product of:
               2.848016 = boost
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.018287467 = queryNorm
             0.77840614 = fieldWeight in 4317, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.0625 = fieldNorm(doc=4317)
       0.36 = coord(9/25)
   

3. Chinchilla-Rodríguez, Z.; Benavent-Pérez, M.; Moya-Anegón, F.de; Miguel, S.: International collaboration in Medical Research in Latin America and the Caribbean (2003-2007) (2012) 0.21

   0.20646472 = sum of:
     0.20646472 = product of:
       0.6452023 = sum of:
         0.017230557 = weight(abstract_txt:science in 1493) [ClassicSimilarity], result of:
           0.017230557 = score(doc=1493,freq=1.0), product of:
             0.07159663 = queryWeight, product of:
               1.0167456 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.018287467 = queryNorm
             0.24066156 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.051964942 = weight(abstract_txt:scientific in 1493) [ClassicSimilarity], result of:
           0.051964942 = score(doc=1493,freq=3.0), product of:
             0.103623815 = queryWeight, product of:
               1.2231953 = boost
               4.6324444 = idf(docFreq=1174, maxDocs=44421)
               0.018287467 = queryNorm
             0.5014768 = fieldWeight in 1493, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.6324444 = idf(docFreq=1174, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.034436606 = weight(abstract_txt:high in 1493) [ClassicSimilarity], result of:
           0.034436606 = score(doc=1493,freq=1.0), product of:
             0.113598675 = queryWeight, product of:
               1.2807155 = boost
               4.8502827 = idf(docFreq=944, maxDocs=44421)
               0.018287467 = queryNorm
             0.30314267 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8502827 = idf(docFreq=944, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.045738693 = weight(abstract_txt:citations in 1493) [ClassicSimilarity], result of:
           0.045738693 = score(doc=1493,freq=1.0), product of:
             0.13726154 = queryWeight, product of:
               1.4077983 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.018287467 = queryNorm
             0.33322293 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.012682143 = weight(abstract_txt:from in 1493) [ClassicSimilarity], result of:
           0.012682143 = score(doc=1493,freq=1.0), product of:
             0.07353568 = queryWeight, product of:
               1.4572366 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.018287467 = queryNorm
             0.17246243 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.13778514 = weight(abstract_txt:countries in 1493) [ClassicSimilarity], result of:
           0.13778514 = score(doc=1493,freq=3.0), product of:
             0.2272399 = queryWeight, product of:
               2.218472 = boost
               5.6011486 = idf(docFreq=445, maxDocs=44421)
               0.018287467 = queryNorm
             0.60634214 = fieldWeight in 1493, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.6011486 = idf(docFreq=445, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.16830896 = weight(abstract_txt:scopus in 1493) [ClassicSimilarity], result of:
           0.16830896 = score(doc=1493,freq=1.0), product of:
             0.37450844 = queryWeight, product of:
               2.848016 = boost
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.018287467 = queryNorm
             0.449413 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
         0.17705521 = weight(abstract_txt:bibliometric in 1493) [ClassicSimilarity], result of:
           0.17705521 = score(doc=1493,freq=1.0), product of:
             0.45928138 = queryWeight, product of:
               4.0716968 = boost
               6.168078 = idf(docFreq=252, maxDocs=44421)
               0.018287467 = queryNorm
             0.38550487 = fieldWeight in 1493, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.168078 = idf(docFreq=252, maxDocs=44421)
               0.0625 = fieldNorm(doc=1493)
       0.32 = coord(8/25)
   

4. Meho, L.I.; Sugimoto, C.R.: Assessing the scholarly impact of information studies : a tale of two citation databases - Scopus and Web of Science (2009) 0.20

   0.20213775 = sum of:
     0.20213775 = product of:
       0.72192055 = sum of:
         0.030459609 = weight(abstract_txt:science in 285) [ClassicSimilarity], result of:
           0.030459609 = score(doc=285,freq=2.0), product of:
             0.07159663 = queryWeight, product of:
               1.0167456 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.018287467 = queryNorm
             0.42543355 = fieldWeight in 285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.038024105 = weight(abstract_txt:when in 285) [ClassicSimilarity], result of:
           0.038024105 = score(doc=285,freq=2.0), product of:
             0.08300719 = queryWeight, product of:
               1.0947725 = boost
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.018287467 = queryNorm
             0.45808208 = fieldWeight in 285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.057173364 = weight(abstract_txt:citations in 285) [ClassicSimilarity], result of:
           0.057173364 = score(doc=285,freq=1.0), product of:
             0.13726154 = queryWeight, product of:
               1.4077983 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.018287467 = queryNorm
             0.41652864 = fieldWeight in 285, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.02241907 = weight(abstract_txt:from in 285) [ClassicSimilarity], result of:
           0.02241907 = score(doc=285,freq=2.0), product of:
             0.07353568 = queryWeight, product of:
               1.4572366 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.018287467 = queryNorm
             0.30487338 = fieldWeight in 285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.068818465 = weight(abstract_txt:databases in 285) [ClassicSimilarity], result of:
           0.068818465 = score(doc=285,freq=2.0), product of:
             0.14111617 = queryWeight, product of:
               1.748236 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.018287467 = queryNorm
             0.48767242 = fieldWeight in 285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.14062636 = weight(abstract_txt:countries in 285) [ClassicSimilarity], result of:
           0.14062636 = score(doc=285,freq=2.0), product of:
             0.2272399 = queryWeight, product of:
               2.218472 = boost
               5.6011486 = idf(docFreq=445, maxDocs=44421)
               0.018287467 = queryNorm
             0.61884534 = fieldWeight in 285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.6011486 = idf(docFreq=445, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
         0.36439958 = weight(abstract_txt:scopus in 285) [ClassicSimilarity], result of:
           0.36439958 = score(doc=285,freq=3.0), product of:
             0.37450844 = queryWeight, product of:
               2.848016 = boost
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.018287467 = queryNorm
             0.9730077 = fieldWeight in 285, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.078125 = fieldNorm(doc=285)
       0.28 = coord(7/25)
   

5. Li, X.; Thelwall, M.; Kousha, K.: ¬The role of arXiv, RePEc, SSRN and PMC in formal scholarly communication (2015) 0.19

   0.19368118 = sum of:
     0.19368118 = product of:
       0.6052537 = sum of:
         0.017230557 = weight(abstract_txt:science in 3593) [ClassicSimilarity], result of:
           0.017230557 = score(doc=3593,freq=1.0), product of:
             0.07159663 = queryWeight, product of:
               1.0167456 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.018287467 = queryNorm
             0.24066156 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.021348048 = weight(abstract_txt:number in 3593) [ClassicSimilarity], result of:
           0.021348048 = score(doc=3593,freq=1.0), product of:
             0.082590826 = queryWeight, product of:
               1.0920234 = boost
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.018287467 = queryNorm
             0.25847965 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.021509683 = weight(abstract_txt:when in 3593) [ClassicSimilarity], result of:
           0.021509683 = score(doc=3593,freq=1.0), product of:
             0.08300719 = queryWeight, product of:
               1.0947725 = boost
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.018287467 = queryNorm
             0.25913036 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1460857 = idf(docFreq=1910, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.030490149 = weight(abstract_txt:major in 3593) [ClassicSimilarity], result of:
           0.030490149 = score(doc=3593,freq=1.0), product of:
             0.10474486 = queryWeight, product of:
               1.229794 = boost
               4.657435 = idf(docFreq=1145, maxDocs=44421)
               0.018287467 = queryNorm
             0.29108968 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.657435 = idf(docFreq=1145, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.04405476 = weight(abstract_txt:papers in 3593) [ClassicSimilarity], result of:
           0.04405476 = score(doc=3593,freq=1.0), product of:
             0.13387154 = queryWeight, product of:
               1.3903052 = boost
               5.2653174 = idf(docFreq=623, maxDocs=44421)
               0.018287467 = queryNorm
             0.32908234 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2653174 = idf(docFreq=623, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.11203646 = weight(abstract_txt:citations in 3593) [ClassicSimilarity], result of:
           0.11203646 = score(doc=3593,freq=6.0), product of:
             0.13726154 = queryWeight, product of:
               1.4077983 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.018287467 = queryNorm
             0.8162262 = fieldWeight in 3593, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.021966115 = weight(abstract_txt:from in 3593) [ClassicSimilarity], result of:
           0.021966115 = score(doc=3593,freq=3.0), product of:
             0.07353568 = queryWeight, product of:
               1.4572366 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.018287467 = queryNorm
             0.29871368 = fieldWeight in 3593, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
         0.33661792 = weight(abstract_txt:scopus in 3593) [ClassicSimilarity], result of:
           0.33661792 = score(doc=3593,freq=4.0), product of:
             0.37450844 = queryWeight, product of:
               2.848016 = boost
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.018287467 = queryNorm
             0.898826 = fieldWeight in 3593, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               7.190608 = idf(docFreq=90, maxDocs=44421)
               0.0625 = fieldNorm(doc=3593)
       0.32 = coord(8/25)