Document (#36370)

Author
Zhao, D.
Strotmann, A.
Title
Counting first, last, or all authors in citation analysis : a comprehensive comparison in the highly collaborative stem cell research field
Source
Journal of the American Society for Information Science and Technology. 62(2011) no.4, S.654-676
Year
2011
Abstract
How can citation analysis take into account the highly collaborative nature and unique research and publication culture of biomedical research fields? This study explores this question by introducing last-author citation counting and comparing it with traditional first-author counting and theoretically optimal all-author counting in the stem cell research field for the years 2004-2009. For citation ranking, last-author counting, which is directly supported by Scopus but not by ISI databases, appears to approximate all-author counting quite well in a field where heads of research labs are traditionally listed as last authors; however, first author counting does not. For field mapping, we find that author co-citation analyses based on different counting methods all produce similar overall intellectual structures of a research field, but detailed structures and minor specialties revealed differ to various degrees and thus require great caution to interpret. This is true especially when authors are selected into the analysis based on citedness, because author selection is found to have a greater effect on mapping results than does choice of co-citation counting method. Findings are based on a comprehensive, high-quality dataset extracted in several steps from PubMed and Scopus and subjected to automatic reference and author name disambiguation.
Theme
Informetrie
Field
Molekularbiologie

Similar documents (author)

  1. Zhao, D.; Strotmann, A.: Can citation analysis of Web publications better detect research fronts? (2007) 6.02
    6.0204773 = sum of:
      6.0204773 = sum of:
        2.1204646 = weight(author_txt:zhao in 2472) [ClassicSimilarity], result of:
          2.1204646 = score(doc=2472,freq=1.0), product of:
            0.5544065 = queryWeight, product of:
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.072476245 = queryNorm
            3.8247466 = fieldWeight in 2472, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.5 = fieldNorm(doc=2472)
        3.9000127 = weight(author_txt:strotmann in 2472) [ClassicSimilarity], result of:
          3.9000127 = score(doc=2472,freq=1.0), product of:
            0.83224595 = queryWeight, product of:
              1.2252132 = boost
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.072476245 = queryNorm
            4.68613 = fieldWeight in 2472, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.5 = fieldNorm(doc=2472)
    
  2. Zhao, D.; Strotmann, A.: Information science during the first decade of the web : an enriched author cocitation analysis (2008) 6.02
    6.0204773 = sum of:
      6.0204773 = sum of:
        2.1204646 = weight(author_txt:zhao in 3721) [ClassicSimilarity], result of:
          2.1204646 = score(doc=3721,freq=1.0), product of:
            0.5544065 = queryWeight, product of:
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.072476245 = queryNorm
            3.8247466 = fieldWeight in 3721, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.5 = fieldNorm(doc=3721)
        3.9000127 = weight(author_txt:strotmann in 3721) [ClassicSimilarity], result of:
          3.9000127 = score(doc=3721,freq=1.0), product of:
            0.83224595 = queryWeight, product of:
              1.2252132 = boost
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.072476245 = queryNorm
            4.68613 = fieldWeight in 3721, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.5 = fieldNorm(doc=3721)
    
  3. Zhao, D.; Strotmann, A.: Evolution of research activities and intellectual influences in information science 1996-2005 : introducing author bibliographic-coupling analysis (2008) 6.02
    6.0204773 = sum of:
      6.0204773 = sum of:
        2.1204646 = weight(author_txt:zhao in 4385) [ClassicSimilarity], result of:
          2.1204646 = score(doc=4385,freq=1.0), product of:
            0.5544065 = queryWeight, product of:
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.072476245 = queryNorm
            3.8247466 = fieldWeight in 4385, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.5 = fieldNorm(doc=4385)
        3.9000127 = weight(author_txt:strotmann in 4385) [ClassicSimilarity], result of:
          3.9000127 = score(doc=4385,freq=1.0), product of:
            0.83224595 = queryWeight, product of:
              1.2252132 = boost
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.072476245 = queryNorm
            4.68613 = fieldWeight in 4385, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.5 = fieldNorm(doc=4385)
    
  4. Strotmann, A.; Zhao, D.: Author name disambiguation : what difference does it make in author-based citation analysis? (2012) 6.02
    6.0204773 = sum of:
      6.0204773 = sum of:
        2.1204646 = weight(author_txt:zhao in 1854) [ClassicSimilarity], result of:
          2.1204646 = score(doc=1854,freq=1.0), product of:
            0.5544065 = queryWeight, product of:
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.072476245 = queryNorm
            3.8247466 = fieldWeight in 1854, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.5 = fieldNorm(doc=1854)
        3.9000127 = weight(author_txt:strotmann in 1854) [ClassicSimilarity], result of:
          3.9000127 = score(doc=1854,freq=1.0), product of:
            0.83224595 = queryWeight, product of:
              1.2252132 = boost
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.072476245 = queryNorm
            4.68613 = fieldWeight in 1854, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.5 = fieldNorm(doc=1854)
    
  5. Zhao, D.; Strotmann, A.: ¬The knowledge base and research front of information science 2006-2010 : an author cocitation and bibliographic coupling analysis (2014) 6.02
    6.0204773 = sum of:
      6.0204773 = sum of:
        2.1204646 = weight(author_txt:zhao in 2724) [ClassicSimilarity], result of:
          2.1204646 = score(doc=2724,freq=1.0), product of:
            0.5544065 = queryWeight, product of:
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.072476245 = queryNorm
            3.8247466 = fieldWeight in 2724, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.649493 = idf(docFreq=55, maxDocs=43254)
              0.5 = fieldNorm(doc=2724)
        3.9000127 = weight(author_txt:strotmann in 2724) [ClassicSimilarity], result of:
          3.9000127 = score(doc=2724,freq=1.0), product of:
            0.83224595 = queryWeight, product of:
              1.2252132 = boost
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.072476245 = queryNorm
            4.68613 = fieldWeight in 2724, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.37226 = idf(docFreq=9, maxDocs=43254)
              0.5 = fieldNorm(doc=2724)
    

Similar documents (content)

  1. Strotmann, A.; Zhao, D.: Author name disambiguation : what difference does it make in author-based citation analysis? (2012) 0.91
    0.9051753 = sum of:
      0.9051753 = product of:
        1.6163845 = sum of:
          0.05170824 = weight(abstract_txt:heads in 1854) [ClassicSimilarity], result of:
            0.05170824 = score(doc=1854,freq=1.0), product of:
              0.09916906 = queryWeight, product of:
                1.012351 = boost
                8.342641 = idf(docFreq=27, maxDocs=43254)
                0.011741985 = queryNorm
              0.52141505 = fieldWeight in 1854, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.342641 = idf(docFreq=27, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.01754176 = weight(abstract_txt:based in 1854) [ClassicSimilarity], result of:
            0.01754176 = score(doc=1854,freq=4.0), product of:
              0.04382671 = queryWeight, product of:
                1.1656632 = boost
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.011741985 = queryNorm
              0.40025273 = fieldWeight in 1854, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.018729316 = weight(abstract_txt:analysis in 1854) [ClassicSimilarity], result of:
            0.018729316 = score(doc=1854,freq=2.0), product of:
              0.057683025 = queryWeight, product of:
                1.3372964 = boost
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.011741985 = queryNorm
              0.3246937 = fieldWeight in 1854, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.059840064 = weight(abstract_txt:mapping in 1854) [ClassicSimilarity], result of:
            0.059840064 = score(doc=1854,freq=3.0), product of:
              0.095492065 = queryWeight, product of:
                1.4048879 = boost
                5.788741 = idf(docFreq=359, maxDocs=43254)
                0.011741985 = queryNorm
              0.6266496 = fieldWeight in 1854, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.788741 = idf(docFreq=359, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.033968356 = weight(abstract_txt:first in 1854) [ClassicSimilarity], result of:
            0.033968356 = score(doc=1854,freq=3.0), product of:
              0.07494098 = queryWeight, product of:
                1.5242751 = boost
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.011741985 = queryNorm
              0.45326808 = fieldWeight in 1854, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.054544978 = weight(abstract_txt:authors in 1854) [ClassicSimilarity], result of:
            0.054544978 = score(doc=1854,freq=4.0), product of:
              0.09336697 = queryWeight, product of:
                1.701376 = boost
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.011741985 = queryNorm
              0.5841999 = fieldWeight in 1854, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.13934204 = weight(abstract_txt:stem in 1854) [ClassicSimilarity], result of:
            0.13934204 = score(doc=1854,freq=2.0), product of:
              0.19203974 = queryWeight, product of:
                1.9922948 = boost
                8.209109 = idf(docFreq=31, maxDocs=43254)
                0.011741985 = queryNorm
              0.7255896 = fieldWeight in 1854, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.209109 = idf(docFreq=31, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.167609 = weight(abstract_txt:cell in 1854) [ClassicSimilarity], result of:
            0.167609 = score(doc=1854,freq=2.0), product of:
              0.21720405 = queryWeight, product of:
                2.11881 = boost
                8.730406 = idf(docFreq=18, maxDocs=43254)
                0.011741985 = queryNorm
              0.7716661 = fieldWeight in 1854, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.730406 = idf(docFreq=18, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.024691641 = weight(abstract_txt:research in 1854) [ClassicSimilarity], result of:
            0.024691641 = score(doc=1854,freq=2.0), product of:
              0.087379605 = queryWeight, product of:
                2.3276823 = boost
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.011741985 = queryNorm
              0.282579 = fieldWeight in 1854, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.09153023 = weight(abstract_txt:field in 1854) [ClassicSimilarity], result of:
            0.09153023 = score(doc=1854,freq=5.0), product of:
              0.14511514 = queryWeight, product of:
                2.7383213 = boost
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.011741985 = queryNorm
              0.63074213 = fieldWeight in 1854, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.13662659 = weight(abstract_txt:last in 1854) [ClassicSimilarity], result of:
            0.13662659 = score(doc=1854,freq=4.0), product of:
              0.18953663 = queryWeight, product of:
                2.7991076 = boost
                5.7667623 = idf(docFreq=367, maxDocs=43254)
                0.011741985 = queryNorm
              0.7208453 = fieldWeight in 1854, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.7667623 = idf(docFreq=367, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.15501554 = weight(abstract_txt:citation in 1854) [ClassicSimilarity], result of:
            0.15501554 = score(doc=1854,freq=6.0), product of:
              0.20618315 = queryWeight, product of:
                3.5755696 = boost
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.011741985 = queryNorm
              0.7518342 = fieldWeight in 1854, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.3137808 = weight(abstract_txt:author in 1854) [ClassicSimilarity], result of:
            0.3137808 = score(doc=1854,freq=10.0), product of:
              0.31854302 = queryWeight, product of:
                5.4431252 = boost
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.011741985 = queryNorm
              0.98505 = fieldWeight in 1854, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
          0.35145587 = weight(abstract_txt:counting in 1854) [ClassicSimilarity], result of:
            0.35145587 = score(doc=1854,freq=1.0), product of:
              0.7401693 = queryWeight, product of:
                8.297167 = boost
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.011741985 = queryNorm
              0.47483173 = fieldWeight in 1854, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.0625 = fieldNorm(doc=1854)
        0.56 = coord(14/25)
    
  2. Rousseau, R.; Zuccala, A.: ¬A classification of author co-citations : definitions and search strategies (2004) 0.44
    0.43782112 = sum of:
      0.43782112 = product of:
        1.0945528 = sum of:
          0.07581358 = weight(abstract_txt:citedness in 4267) [ClassicSimilarity], result of:
            0.07581358 = score(doc=4267,freq=1.0), product of:
              0.12798753 = queryWeight, product of:
                1.1500769 = boost
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.011741985 = queryNorm
              0.59235126 = fieldWeight in 4267, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.012403898 = weight(abstract_txt:based in 4267) [ClassicSimilarity], result of:
            0.012403898 = score(doc=4267,freq=2.0), product of:
              0.04382671 = queryWeight, product of:
                1.1656632 = boost
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.011741985 = queryNorm
              0.28302142 = fieldWeight in 4267, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.025512809 = weight(abstract_txt:does in 4267) [ClassicSimilarity], result of:
            0.025512809 = score(doc=4267,freq=1.0), product of:
              0.07801627 = queryWeight, product of:
                1.2698448 = boost
                5.232305 = idf(docFreq=627, maxDocs=43254)
                0.011741985 = queryNorm
              0.32701907 = fieldWeight in 4267, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.232305 = idf(docFreq=627, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.033968356 = weight(abstract_txt:first in 4267) [ClassicSimilarity], result of:
            0.033968356 = score(doc=4267,freq=3.0), product of:
              0.07494098 = queryWeight, product of:
                1.5242751 = boost
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.011741985 = queryNorm
              0.45326808 = fieldWeight in 4267, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.027272489 = weight(abstract_txt:authors in 4267) [ClassicSimilarity], result of:
            0.027272489 = score(doc=4267,freq=1.0), product of:
              0.09336697 = queryWeight, product of:
                1.701376 = boost
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.011741985 = queryNorm
              0.29209995 = fieldWeight in 4267, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.017459627 = weight(abstract_txt:research in 4267) [ClassicSimilarity], result of:
            0.017459627 = score(doc=4267,freq=1.0), product of:
              0.087379605 = queryWeight, product of:
                2.3276823 = boost
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.011741985 = queryNorm
              0.19981353 = fieldWeight in 4267, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.0578888 = weight(abstract_txt:field in 4267) [ClassicSimilarity], result of:
            0.0578888 = score(doc=4267,freq=2.0), product of:
              0.14511514 = queryWeight, product of:
                2.7383213 = boost
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.011741985 = queryNorm
              0.39891633 = fieldWeight in 4267, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.17899652 = weight(abstract_txt:citation in 4267) [ClassicSimilarity], result of:
            0.17899652 = score(doc=4267,freq=8.0), product of:
              0.20618315 = queryWeight, product of:
                3.5755696 = boost
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.011741985 = queryNorm
              0.8681433 = fieldWeight in 4267, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.3137808 = weight(abstract_txt:author in 4267) [ClassicSimilarity], result of:
            0.3137808 = score(doc=4267,freq=10.0), product of:
              0.31854302 = queryWeight, product of:
                5.4431252 = boost
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.011741985 = queryNorm
              0.98505 = fieldWeight in 4267, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
          0.35145587 = weight(abstract_txt:counting in 4267) [ClassicSimilarity], result of:
            0.35145587 = score(doc=4267,freq=1.0), product of:
              0.7401693 = queryWeight, product of:
                8.297167 = boost
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.011741985 = queryNorm
              0.47483173 = fieldWeight in 4267, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.0625 = fieldNorm(doc=4267)
        0.4 = coord(10/25)
    
  3. Zhao, D.; Strotmann, A.: In-text author citation analysis : feasibility, benefits, and limitations (2014) 0.39
    0.3938417 = sum of:
      0.3938417 = product of:
        1.0940048 = sum of:
          0.070482515 = weight(abstract_txt:specialties in 3000) [ClassicSimilarity], result of:
            0.070482515 = score(doc=3000,freq=2.0), product of:
              0.09676403 = queryWeight, product of:
                8.240858 = idf(docFreq=30, maxDocs=43254)
                0.011741985 = queryNorm
              0.7283958 = fieldWeight in 3000, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.240858 = idf(docFreq=30, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.00877088 = weight(abstract_txt:based in 3000) [ClassicSimilarity], result of:
            0.00877088 = score(doc=3000,freq=1.0), product of:
              0.04382671 = queryWeight, product of:
                1.1656632 = boost
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.011741985 = queryNorm
              0.20012636 = fieldWeight in 3000, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.039730877 = weight(abstract_txt:analysis in 3000) [ClassicSimilarity], result of:
            0.039730877 = score(doc=3000,freq=9.0), product of:
              0.057683025 = queryWeight, product of:
                1.3372964 = boost
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.011741985 = queryNorm
              0.68877935 = fieldWeight in 3000, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.034548678 = weight(abstract_txt:mapping in 3000) [ClassicSimilarity], result of:
            0.034548678 = score(doc=3000,freq=1.0), product of:
              0.095492065 = queryWeight, product of:
                1.4048879 = boost
                5.788741 = idf(docFreq=359, maxDocs=43254)
                0.011741985 = queryNorm
              0.36179632 = fieldWeight in 3000, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.788741 = idf(docFreq=359, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.038569123 = weight(abstract_txt:authors in 3000) [ClassicSimilarity], result of:
            0.038569123 = score(doc=3000,freq=2.0), product of:
              0.09336697 = queryWeight, product of:
                1.701376 = boost
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.011741985 = queryNorm
              0.41309172 = fieldWeight in 3000, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.024691641 = weight(abstract_txt:research in 3000) [ClassicSimilarity], result of:
            0.024691641 = score(doc=3000,freq=2.0), product of:
              0.087379605 = queryWeight, product of:
                2.3276823 = boost
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.011741985 = queryNorm
              0.282579 = fieldWeight in 3000, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.24510108 = weight(abstract_txt:citation in 3000) [ClassicSimilarity], result of:
            0.24510108 = score(doc=3000,freq=15.0), product of:
              0.20618315 = queryWeight, product of:
                3.5755696 = boost
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.011741985 = queryNorm
              1.1887542 = fieldWeight in 3000, product of:
                3.8729835 = tf(freq=15.0), with freq of:
                  15.0 = termFreq=15.0
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.28065407 = weight(abstract_txt:author in 3000) [ClassicSimilarity], result of:
            0.28065407 = score(doc=3000,freq=8.0), product of:
              0.31854302 = queryWeight, product of:
                5.4431252 = boost
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.011741985 = queryNorm
              0.8810555 = fieldWeight in 3000, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
          0.35145587 = weight(abstract_txt:counting in 3000) [ClassicSimilarity], result of:
            0.35145587 = score(doc=3000,freq=1.0), product of:
              0.7401693 = queryWeight, product of:
                8.297167 = boost
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.011741985 = queryNorm
              0.47483173 = fieldWeight in 3000, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.0625 = fieldNorm(doc=3000)
        0.36 = coord(9/25)
    
  4. Huang, M.-H.; Lin, C.-S.; Chen, D.-Z.: Counting methods, country rank changes, and counting inflation in the assessment of national research productivity and impact (2011) 0.35
    0.34594098 = sum of:
      0.34594098 = product of:
        1.4414208 = sum of:
          0.012403898 = weight(abstract_txt:based in 1407) [ClassicSimilarity], result of:
            0.012403898 = score(doc=1407,freq=2.0), product of:
              0.04382671 = queryWeight, product of:
                1.1656632 = boost
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.011741985 = queryNorm
              0.28302142 = fieldWeight in 1407, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
          0.01961164 = weight(abstract_txt:first in 1407) [ClassicSimilarity], result of:
            0.01961164 = score(doc=1407,freq=1.0), product of:
              0.07494098 = queryWeight, product of:
                1.5242751 = boost
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.011741985 = queryNorm
              0.26169446 = fieldWeight in 1407, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1871114 = idf(docFreq=1785, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
          0.034919254 = weight(abstract_txt:research in 1407) [ClassicSimilarity], result of:
            0.034919254 = score(doc=1407,freq=4.0), product of:
              0.087379605 = queryWeight, product of:
                2.3276823 = boost
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.011741985 = queryNorm
              0.39962706 = fieldWeight in 1407, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.1970165 = idf(docFreq=4806, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
          0.10961253 = weight(abstract_txt:citation in 1407) [ClassicSimilarity], result of:
            0.10961253 = score(doc=1407,freq=3.0), product of:
              0.20618315 = queryWeight, product of:
                3.5755696 = boost
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.011741985 = queryNorm
              0.531627 = fieldWeight in 1407, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
          0.0992262 = weight(abstract_txt:author in 1407) [ClassicSimilarity], result of:
            0.0992262 = score(doc=1407,freq=1.0), product of:
              0.31854302 = queryWeight, product of:
                5.4431252 = boost
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.011741985 = queryNorm
              0.31150016 = fieldWeight in 1407, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
          1.1656473 = weight(abstract_txt:counting in 1407) [ClassicSimilarity], result of:
            1.1656473 = score(doc=1407,freq=11.0), product of:
              0.7401693 = queryWeight, product of:
                8.297167 = boost
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.011741985 = queryNorm
              1.5748388 = fieldWeight in 1407, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.0625 = fieldNorm(doc=1407)
        0.24 = coord(6/25)
    
  5. Zhao, D.; Strotmann, A.: Dimensions and uncertainties of author citation rankings : lessons learned from frequency-weighted in-text citation counting (2016) 0.27
    0.2729487 = sum of:
      0.2729487 = product of:
        0.9748168 = sum of:
          0.0109636 = weight(abstract_txt:based in 4239) [ClassicSimilarity], result of:
            0.0109636 = score(doc=4239,freq=1.0), product of:
              0.04382671 = queryWeight, product of:
                1.1656632 = boost
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.011741985 = queryNorm
              0.25015795 = fieldWeight in 4239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2020218 = idf(docFreq=4782, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.016554533 = weight(abstract_txt:analysis in 4239) [ClassicSimilarity], result of:
            0.016554533 = score(doc=4239,freq=1.0), product of:
              0.057683025 = queryWeight, product of:
                1.3372964 = boost
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.011741985 = queryNorm
              0.28699142 = fieldWeight in 4239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.67349 = idf(docFreq=2984, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.048211403 = weight(abstract_txt:authors in 4239) [ClassicSimilarity], result of:
            0.048211403 = score(doc=4239,freq=2.0), product of:
              0.09336697 = queryWeight, product of:
                1.701376 = boost
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.011741985 = queryNorm
              0.51636463 = fieldWeight in 4239, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6735992 = idf(docFreq=1097, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.051166955 = weight(abstract_txt:field in 4239) [ClassicSimilarity], result of:
            0.051166955 = score(doc=4239,freq=1.0), product of:
              0.14511514 = queryWeight, product of:
                2.7383213 = boost
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.011741985 = queryNorm
              0.35259557 = fieldWeight in 4239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.513223 = idf(docFreq=1288, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.19376943 = weight(abstract_txt:citation in 4239) [ClassicSimilarity], result of:
            0.19376943 = score(doc=4239,freq=6.0), product of:
              0.20618315 = queryWeight, product of:
                3.5755696 = boost
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.011741985 = queryNorm
              0.93979275 = fieldWeight in 4239, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.91096 = idf(docFreq=865, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.21483102 = weight(abstract_txt:author in 4239) [ClassicSimilarity], result of:
            0.21483102 = score(doc=4239,freq=3.0), product of:
              0.31854302 = queryWeight, product of:
                5.4431252 = boost
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.011741985 = queryNorm
              0.6744176 = fieldWeight in 4239, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.9840026 = idf(docFreq=804, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
          0.43931982 = weight(abstract_txt:counting in 4239) [ClassicSimilarity], result of:
            0.43931982 = score(doc=4239,freq=1.0), product of:
              0.7401693 = queryWeight, product of:
                8.297167 = boost
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.011741985 = queryNorm
              0.59353966 = fieldWeight in 4239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5973077 = idf(docFreq=58, maxDocs=43254)
                0.078125 = fieldNorm(doc=4239)
        0.28 = coord(7/25)