Document (#36918)

Author

Leydesdorff, L.
Bornmann, L.

Title

Integrated impact indicators compared with impact factors : an alternative research design with policy implications

Source

Journal of the American Society for Information Science and Technology. 62(2011) no.11, S.2133-2146

Year

2011

Abstract

In bibliometrics, the association of "impact" with central-tendency statistics is mistaken. Impacts add up, and citation curves therefore should be integrated instead of averaged. For example, the journals MIS Quarterly and Journal of the American Society for Information Science and Technology differ by a factor of 2 in terms of their respective impact factors (IF), but the journal with the lower IF has the higher impact. Using percentile ranks (e.g., top-1%, top-10%, etc.), an Integrated Impact Indicator (I3) can be based on integration of the citation curves, but after normalization of the citation curves to the same scale. The results across document sets can be compared as percentages of the total impact of a reference set. Total number of citations, however, should not be used instead because the shape of the citation curves is then not appreciated. I3 can be applied to any document set and any citation window. The results of the integration (summation) are fully decomposable in terms of journals or institutional units such as nations, universities, and so on because percentile ranks are determined at the paper level. In this study, we first compare I3 with IFs for the journals in two Institute for Scientific Information subject categories ("Information Science & Library Science" and "Multidisciplinary Sciences"). The library and information science set is additionally decomposed in terms of nations. Policy implications of this possible paradigm shift in citation impact analysis are specified.

Theme

Informetrie

Similar documents (author)

1. Leydesdorff, L.; Bornmann, L.: How fractional counting of citations affects the impact factor : normalization in terms of differences in citation potentials among fields of science (2011) 5.22

   5.218148 = sum of:
     5.218148 = sum of:
       2.4236293 = weight(author_txt:leydesdorff in 1184) [ClassicSimilarity], result of:
         2.4236293 = score(doc=1184,freq=1.0), product of:
           0.67281306 = queryWeight, product of:
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.093388334 = queryNorm
           3.602233 = fieldWeight in 1184, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.5 = fieldNorm(doc=1184)
       2.7945192 = weight(author_txt:bornmann in 1184) [ClassicSimilarity], result of:
         2.7945192 = score(doc=1184,freq=1.0), product of:
           0.73981255 = queryWeight, product of:
             1.0486091 = boost
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.093388334 = queryNorm
           3.7773342 = fieldWeight in 1184, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.5 = fieldNorm(doc=1184)
   

2. Bornmann, L.; Leydesdorff, L.: Which cities produce more excellent papers than can be expected? : a new mapping approach, using Google Maps, based on statistical significance testing (2011) 5.22

   5.218148 = sum of:
     5.218148 = sum of:
       2.4236293 = weight(author_txt:leydesdorff in 1765) [ClassicSimilarity], result of:
         2.4236293 = score(doc=1765,freq=1.0), product of:
           0.67281306 = queryWeight, product of:
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.093388334 = queryNorm
           3.602233 = fieldWeight in 1765, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.5 = fieldNorm(doc=1765)
       2.7945192 = weight(author_txt:bornmann in 1765) [ClassicSimilarity], result of:
         2.7945192 = score(doc=1765,freq=1.0), product of:
           0.73981255 = queryWeight, product of:
             1.0486091 = boost
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.093388334 = queryNorm
           3.7773342 = fieldWeight in 1765, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.5 = fieldNorm(doc=1765)
   

3. Leydesdorff, L.; Bornmann, L.: Mapping (USPTO) patent data using overlays to Google Maps (2012) 5.22

   5.218148 = sum of:
     5.218148 = sum of:
       2.4236293 = weight(author_txt:leydesdorff in 2286) [ClassicSimilarity], result of:
         2.4236293 = score(doc=2286,freq=1.0), product of:
           0.67281306 = queryWeight, product of:
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.093388334 = queryNorm
           3.602233 = fieldWeight in 2286, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.5 = fieldNorm(doc=2286)
       2.7945192 = weight(author_txt:bornmann in 2286) [ClassicSimilarity], result of:
         2.7945192 = score(doc=2286,freq=1.0), product of:
           0.73981255 = queryWeight, product of:
             1.0486091 = boost
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.093388334 = queryNorm
           3.7773342 = fieldWeight in 2286, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.5 = fieldNorm(doc=2286)
   

4. Bornmann, L.; Leydesdorff, L.: Statistical tests and research assessments : a comment on Schneider (2012) (2013) 5.22

   5.218148 = sum of:
     5.218148 = sum of:
       2.4236293 = weight(author_txt:leydesdorff in 2750) [ClassicSimilarity], result of:
         2.4236293 = score(doc=2750,freq=1.0), product of:
           0.67281306 = queryWeight, product of:
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.093388334 = queryNorm
           3.602233 = fieldWeight in 2750, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.5 = fieldNorm(doc=2750)
       2.7945192 = weight(author_txt:bornmann in 2750) [ClassicSimilarity], result of:
         2.7945192 = score(doc=2750,freq=1.0), product of:
           0.73981255 = queryWeight, product of:
             1.0486091 = boost
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.093388334 = queryNorm
           3.7773342 = fieldWeight in 2750, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.5 = fieldNorm(doc=2750)
   

5. Leydesdorff, L.; Bornmann, L.: ¬The operationalization of "fields" as WoS subject categories (WCs) in evaluative bibliometrics : the cases of "library and information science" and "science & technology studies" (2016) 5.22

   5.218148 = sum of:
     5.218148 = sum of:
       2.4236293 = weight(author_txt:leydesdorff in 4777) [ClassicSimilarity], result of:
         2.4236293 = score(doc=4777,freq=1.0), product of:
           0.67281306 = queryWeight, product of:
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.093388334 = queryNorm
           3.602233 = fieldWeight in 4777, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.204466 = idf(docFreq=87, maxDocs=43556)
             0.5 = fieldNorm(doc=4777)
       2.7945192 = weight(author_txt:bornmann in 4777) [ClassicSimilarity], result of:
         2.7945192 = score(doc=4777,freq=1.0), product of:
           0.73981255 = queryWeight, product of:
             1.0486091 = boost
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.093388334 = queryNorm
           3.7773342 = fieldWeight in 4777, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.5546684 = idf(docFreq=61, maxDocs=43556)
             0.5 = fieldNorm(doc=4777)
   

Similar documents (content)

1. Baumgartner, S.E.; Leydesdorff, L.: Group-based trajectory modeling (GBTM) of citations in scholarly literature : dynamic qualities of "transient" and "sticky knowledge claims" (2014) 0.44

   0.44095492 = sum of:
     0.44095492 = product of:
       1.1023873 = sum of:
         0.028407678 = weight(abstract_txt:because in 3239) [ClassicSimilarity], result of:
           0.028407678 = score(doc=3239,freq=1.0), product of:
             0.09332048 = queryWeight, product of:
               1.085512 = boost
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.017650766 = queryNorm
             0.3044099 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.030318247 = weight(abstract_txt:factors in 3239) [ClassicSimilarity], result of:
           0.030318247 = score(doc=3239,freq=1.0), product of:
             0.09745913 = queryWeight, product of:
               1.1093215 = boost
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.017650766 = queryNorm
             0.31108677 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9773884 = idf(docFreq=815, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.033860344 = weight(abstract_txt:journal in 3239) [ClassicSimilarity], result of:
           0.033860344 = score(doc=3239,freq=1.0), product of:
             0.104909316 = queryWeight, product of:
               1.1509414 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.017650766 = queryNorm
             0.32275823 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.02457678 = weight(abstract_txt:terms in 3239) [ClassicSimilarity], result of:
           0.02457678 = score(doc=3239,freq=1.0), product of:
             0.09699147 = queryWeight, product of:
               1.3553722 = boost
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.017650766 = queryNorm
             0.25339115 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.009704142 = weight(abstract_txt:with in 3239) [ClassicSimilarity], result of:
           0.009704142 = score(doc=3239,freq=1.0), product of:
             0.06189248 = queryWeight, product of:
               1.397768 = boost
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.017650766 = queryNorm
             0.15679032 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.10106121 = weight(abstract_txt:journals in 3239) [ClassicSimilarity], result of:
           0.10106121 = score(doc=3239,freq=4.0), product of:
             0.15682666 = queryWeight, product of:
               1.7234621 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.017650766 = queryNorm
             0.6444135 = fieldWeight in 3239, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.028850432 = weight(abstract_txt:science in 3239) [ClassicSimilarity], result of:
           0.028850432 = score(doc=3239,freq=1.0), product of:
             0.11879496 = queryWeight, product of:
               1.732049 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.017650766 = queryNorm
             0.24285905 = fieldWeight in 3239, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.21399797 = weight(abstract_txt:citation in 3239) [ClassicSimilarity], result of:
           0.21399797 = score(doc=3239,freq=6.0), product of:
             0.28463146 = queryWeight, product of:
               3.2835848 = boost
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.017650766 = queryNorm
             0.7518423 = fieldWeight in 3239, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.4957775 = weight(abstract_txt:curves in 3239) [ClassicSimilarity], result of:
           0.4957775 = score(doc=3239,freq=3.0), product of:
             0.548505 = queryWeight, product of:
               3.7217865 = boost
               8.349598 = idf(docFreq=27, maxDocs=43556)
               0.017650766 = queryNorm
             0.90387046 = fieldWeight in 3239, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               8.349598 = idf(docFreq=27, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
         0.13583304 = weight(abstract_txt:impact in 3239) [ClassicSimilarity], result of:
           0.13583304 = score(doc=3239,freq=2.0), product of:
             0.3337081 = queryWeight, product of:
               4.105438 = boost
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.017650766 = queryNorm
             0.4070415 = fieldWeight in 3239, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.0625 = fieldNorm(doc=3239)
       0.4 = coord(10/25)
   

2. Leydesdorff, L.; Bornmann, L.; Mutz, R.; Opthof, T.: Turning the tables on citation analysis one more time : principles for comparing sets of documents (2011) 0.32

   0.31779334 = sum of:
     0.31779334 = product of:
       0.9931042 = sum of:
         0.093154624 = weight(abstract_txt:averaged in 1483) [ClassicSimilarity], result of:
           0.093154624 = score(doc=1483,freq=1.0), product of:
             0.16348557 = queryWeight, product of:
               1.0159466 = boost
               9.116854 = idf(docFreq=12, maxDocs=43556)
               0.017650766 = queryNorm
             0.56980336 = fieldWeight in 1483, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.116854 = idf(docFreq=12, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.028407678 = weight(abstract_txt:because in 1483) [ClassicSimilarity], result of:
           0.028407678 = score(doc=1483,freq=1.0), product of:
             0.09332048 = queryWeight, product of:
               1.085512 = boost
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.017650766 = queryNorm
             0.3044099 = fieldWeight in 1483, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.02457678 = weight(abstract_txt:terms in 1483) [ClassicSimilarity], result of:
           0.02457678 = score(doc=1483,freq=1.0), product of:
             0.09699147 = queryWeight, product of:
               1.3553722 = boost
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.017650766 = queryNorm
             0.25339115 = fieldWeight in 1483, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.009704142 = weight(abstract_txt:with in 1483) [ClassicSimilarity], result of:
           0.009704142 = score(doc=1483,freq=1.0), product of:
             0.06189248 = queryWeight, product of:
               1.397768 = boost
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.017650766 = queryNorm
             0.15679032 = fieldWeight in 1483, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.18601546 = weight(abstract_txt:ranks in 1483) [ClassicSimilarity], result of:
           0.18601546 = score(doc=1483,freq=3.0), product of:
             0.22647072 = queryWeight, product of:
               1.6910335 = boost
               7.587458 = idf(docFreq=59, maxDocs=43556)
               0.017650766 = queryNorm
             0.8213664 = fieldWeight in 1483, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.587458 = idf(docFreq=59, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.34068385 = weight(abstract_txt:percentile in 1483) [ClassicSimilarity], result of:
           0.34068385 = score(doc=1483,freq=4.0), product of:
             0.30801192 = queryWeight, product of:
               1.9721044 = boost
               8.848589 = idf(docFreq=16, maxDocs=43556)
               0.017650766 = queryNorm
             1.1060736 = fieldWeight in 1483, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               8.848589 = idf(docFreq=16, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.1747286 = weight(abstract_txt:citation in 1483) [ClassicSimilarity], result of:
           0.1747286 = score(doc=1483,freq=4.0), product of:
             0.28463146 = queryWeight, product of:
               3.2835848 = boost
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.017650766 = queryNorm
             0.61387664 = fieldWeight in 1483, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
         0.13583304 = weight(abstract_txt:impact in 1483) [ClassicSimilarity], result of:
           0.13583304 = score(doc=1483,freq=2.0), product of:
             0.3337081 = queryWeight, product of:
               4.105438 = boost
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.017650766 = queryNorm
             0.4070415 = fieldWeight in 1483, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.0625 = fieldNorm(doc=1483)
       0.32 = coord(8/25)
   

3. Leydesdorff, L.: Caveats for the use of citation indicators in research and journal evaluations (2008) 0.31

   0.30758777 = sum of:
     0.30758777 = product of:
       0.8544104 = sum of:
         0.0087681385 = weight(abstract_txt:information in 3359) [ClassicSimilarity], result of:
           0.0087681385 = score(doc=3359,freq=1.0), product of:
             0.046276595 = queryWeight, product of:
               1.0810403 = boost
               2.425247 = idf(docFreq=10472, maxDocs=43556)
               0.017650766 = queryNorm
             0.18947242 = fieldWeight in 3359, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.425247 = idf(docFreq=10472, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.0598572 = weight(abstract_txt:journal in 3359) [ClassicSimilarity], result of:
           0.0598572 = score(doc=3359,freq=2.0), product of:
             0.104909316 = queryWeight, product of:
               1.1509414 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.017650766 = queryNorm
             0.57056135 = fieldWeight in 3359, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.055252858 = weight(abstract_txt:policy in 3359) [ClassicSimilarity], result of:
           0.055252858 = score(doc=3359,freq=1.0), product of:
             0.1253092 = queryWeight, product of:
               1.2578754 = boost
               5.643932 = idf(docFreq=418, maxDocs=43556)
               0.017650766 = queryNorm
             0.44093218 = fieldWeight in 3359, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.643932 = idf(docFreq=418, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.012130177 = weight(abstract_txt:with in 3359) [ClassicSimilarity], result of:
           0.012130177 = score(doc=3359,freq=1.0), product of:
             0.06189248 = queryWeight, product of:
               1.397768 = boost
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.017650766 = queryNorm
             0.1959879 = fieldWeight in 3359, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.13251215 = weight(abstract_txt:nations in 3359) [ClassicSimilarity], result of:
           0.13251215 = score(doc=3359,freq=1.0), product of:
             0.22451754 = queryWeight, product of:
               1.6837255 = boost
               7.5546684 = idf(docFreq=61, maxDocs=43556)
               0.017650766 = queryNorm
             0.5902085 = fieldWeight in 3359, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.5546684 = idf(docFreq=61, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.12632652 = weight(abstract_txt:journals in 3359) [ClassicSimilarity], result of:
           0.12632652 = score(doc=3359,freq=4.0), product of:
             0.15682666 = queryWeight, product of:
               1.7234621 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.017650766 = queryNorm
             0.80551684 = fieldWeight in 3359, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.06246301 = weight(abstract_txt:science in 3359) [ClassicSimilarity], result of:
           0.06246301 = score(doc=3359,freq=3.0), product of:
             0.11879496 = queryWeight, product of:
               1.732049 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.017650766 = queryNorm
             0.52580523 = fieldWeight in 3359, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.18914928 = weight(abstract_txt:citation in 3359) [ClassicSimilarity], result of:
           0.18914928 = score(doc=3359,freq=3.0), product of:
             0.28463146 = queryWeight, product of:
               3.2835848 = boost
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.017650766 = queryNorm
             0.664541 = fieldWeight in 3359, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
         0.20795104 = weight(abstract_txt:impact in 3359) [ClassicSimilarity], result of:
           0.20795104 = score(doc=3359,freq=3.0), product of:
             0.3337081 = queryWeight, product of:
               4.105438 = boost
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.017650766 = queryNorm
             0.6231525 = fieldWeight in 3359, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.078125 = fieldNorm(doc=3359)
       0.36 = coord(9/25)
   

4. Leydesdorff, L.; Salah, A.A.A.: Maps on the basis of the Arts & Humanities Citation Index : the journals Leonardo and Art Journal versus "digital humanities" as a topic (2010) 0.28

   0.27889848 = sum of:
     0.27889848 = product of:
       0.774718 = sum of:
         0.035509598 = weight(abstract_txt:because in 434) [ClassicSimilarity], result of:
           0.035509598 = score(doc=434,freq=1.0), product of:
             0.09332048 = queryWeight, product of:
               1.085512 = boost
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.017650766 = queryNorm
             0.38051236 = fieldWeight in 434, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705583 = idf(docFreq=907, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.038878288 = weight(abstract_txt:compared in 434) [ClassicSimilarity], result of:
           0.038878288 = score(doc=434,freq=1.0), product of:
             0.09913292 = queryWeight, product of:
               1.1188068 = boost
               5.019948 = idf(docFreq=781, maxDocs=43556)
               0.017650766 = queryNorm
             0.39218342 = fieldWeight in 434, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.019948 = idf(docFreq=781, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.10367571 = weight(abstract_txt:journal in 434) [ClassicSimilarity], result of:
           0.10367571 = score(doc=434,freq=6.0), product of:
             0.104909316 = queryWeight, product of:
               1.1509414 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.017650766 = queryNorm
             0.9882412 = fieldWeight in 434, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.04344602 = weight(abstract_txt:terms in 434) [ClassicSimilarity], result of:
           0.04344602 = score(doc=434,freq=2.0), product of:
             0.09699147 = queryWeight, product of:
               1.3553722 = boost
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.017650766 = queryNorm
             0.4479365 = fieldWeight in 434, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.01715466 = weight(abstract_txt:with in 434) [ClassicSimilarity], result of:
           0.01715466 = score(doc=434,freq=2.0), product of:
             0.06189248 = queryWeight, product of:
               1.397768 = boost
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.017650766 = queryNorm
             0.27716872 = fieldWeight in 434, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.15471777 = weight(abstract_txt:journals in 434) [ClassicSimilarity], result of:
           0.15471777 = score(doc=434,freq=6.0), product of:
             0.15682666 = queryWeight, product of:
               1.7234621 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.017650766 = queryNorm
             0.9865527 = fieldWeight in 434, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.07212608 = weight(abstract_txt:science in 434) [ClassicSimilarity], result of:
           0.07212608 = score(doc=434,freq=4.0), product of:
             0.11879496 = queryWeight, product of:
               1.732049 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.017650766 = queryNorm
             0.60714763 = fieldWeight in 434, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.18914928 = weight(abstract_txt:citation in 434) [ClassicSimilarity], result of:
           0.18914928 = score(doc=434,freq=3.0), product of:
             0.28463146 = queryWeight, product of:
               3.2835848 = boost
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.017650766 = queryNorm
             0.664541 = fieldWeight in 434, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
         0.120060585 = weight(abstract_txt:impact in 434) [ClassicSimilarity], result of:
           0.120060585 = score(doc=434,freq=1.0), product of:
             0.3337081 = queryWeight, product of:
               4.105438 = boost
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.017650766 = queryNorm
             0.35977724 = fieldWeight in 434, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.078125 = fieldNorm(doc=434)
       0.36 = coord(9/25)
   

5. Neuhaus, C.; Marx, W.; Daniel, H.-W.: ¬The publication and citation impact profiles of Angewandte Chemie and the Journal of the American Chemical Society based on the sections of Chemical Abstracts : a case study on the limitations of the Journal Impact Factor (2009) 0.27

   0.27275664 = sum of:
     0.27275664 = product of:
       0.7576573 = sum of:
         0.0070145107 = weight(abstract_txt:information in 4705) [ClassicSimilarity], result of:
           0.0070145107 = score(doc=4705,freq=1.0), product of:
             0.046276595 = queryWeight, product of:
               1.0810403 = boost
               2.425247 = idf(docFreq=10472, maxDocs=43556)
               0.017650766 = queryNorm
             0.15157793 = fieldWeight in 4705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.425247 = idf(docFreq=10472, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.031102631 = weight(abstract_txt:compared in 4705) [ClassicSimilarity], result of:
           0.031102631 = score(doc=4705,freq=1.0), product of:
             0.09913292 = queryWeight, product of:
               1.1188068 = boost
               5.019948 = idf(docFreq=781, maxDocs=43556)
               0.017650766 = queryNorm
             0.31374675 = fieldWeight in 4705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.019948 = idf(docFreq=781, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.08958605 = weight(abstract_txt:journal in 4705) [ClassicSimilarity], result of:
           0.08958605 = score(doc=4705,freq=7.0), product of:
             0.104909316 = queryWeight, product of:
               1.1509414 = boost
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.017650766 = queryNorm
             0.853938 = fieldWeight in 4705, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.1641316 = idf(docFreq=676, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.034756817 = weight(abstract_txt:terms in 4705) [ClassicSimilarity], result of:
           0.034756817 = score(doc=4705,freq=2.0), product of:
             0.09699147 = queryWeight, product of:
               1.3553722 = boost
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.017650766 = queryNorm
             0.3583492 = fieldWeight in 4705, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.0542583 = idf(docFreq=2053, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.013723728 = weight(abstract_txt:with in 4705) [ClassicSimilarity], result of:
           0.013723728 = score(doc=4705,freq=2.0), product of:
             0.06189248 = queryWeight, product of:
               1.397768 = boost
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.017650766 = queryNorm
             0.22173499 = fieldWeight in 4705, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.508645 = idf(docFreq=9634, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.12377421 = weight(abstract_txt:journals in 4705) [ClassicSimilarity], result of:
           0.12377421 = score(doc=4705,freq=6.0), product of:
             0.15682666 = queryWeight, product of:
               1.7234621 = boost
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.017650766 = queryNorm
             0.78924215 = fieldWeight in 4705, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.155308 = idf(docFreq=682, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.028850432 = weight(abstract_txt:science in 4705) [ClassicSimilarity], result of:
           0.028850432 = score(doc=4705,freq=1.0), product of:
             0.11879496 = queryWeight, product of:
               1.732049 = boost
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.017650766 = queryNorm
             0.24285905 = fieldWeight in 4705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8857448 = idf(docFreq=2430, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.1747286 = weight(abstract_txt:citation in 4705) [ClassicSimilarity], result of:
           0.1747286 = score(doc=4705,freq=4.0), product of:
             0.28463146 = queryWeight, product of:
               3.2835848 = boost
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.017650766 = queryNorm
             0.61387664 = fieldWeight in 4705, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.911013 = idf(docFreq=871, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
         0.25412035 = weight(abstract_txt:impact in 4705) [ClassicSimilarity], result of:
           0.25412035 = score(doc=4705,freq=7.0), product of:
             0.3337081 = queryWeight, product of:
               4.105438 = boost
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.017650766 = queryNorm
             0.7615049 = fieldWeight in 4705, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               4.605149 = idf(docFreq=1183, maxDocs=43556)
               0.0625 = fieldNorm(doc=4705)
       0.36 = coord(9/25)