Document (#35701)

Author
Costas, R.
Leeuwen, T.N. van
Bordons, M.
Title
¬A bibliometric classificatory approach for the study and assessment of research performance at the individual level : the effects of age on productivity and impact
Source
Journal of the American Society for Information Science and Technology. 61(2010) no.8, S.1564-1581
Year
2010
Abstract
The authors set forth a general methodology for conducting bibliometric analyses at the micro level. It combines several indicators grouped into three factors or dimensions, which characterize different aspects of scientific performance. Different profiles or classes of scientists are described according to their research performance in each dimension. A series of results based on the findings from the application of this methodology to the study of Spanish National Research Council scientists in Spain in three thematic areas are presented. Special emphasis is made on the identification and description of top scientists from structural and bibliometric perspectives. The effects of age on the productivity and impact of the different classes of scientists are analyzed. The classificatory approach proposed herein may prove a useful tool in support of research assessment at the individual level and for exploring potential determinants of research success.
Theme
Informetrie

Similar documents (author)

  1. Costas, R.; Leeuwen, T.N. van; Bordons, M.: Referencing patterns of individual researchers : do top scientists rely on more extensive information sources? (2012) 6.02
    6.0194235 = sum of:
      6.0194235 = sum of:
        1.6791197 = weight(author_txt:costas in 1516) [ClassicSimilarity], result of:
          1.6791197 = score(doc=1516,freq=1.0), product of:
            0.511321 = queryWeight, product of:
              8.757029 = idf(docFreq=18, maxDocs=44421)
              0.058389787 = queryNorm
            3.2838857 = fieldWeight in 1516, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.757029 = idf(docFreq=18, maxDocs=44421)
              0.375 = fieldNorm(doc=1516)
        1.9070128 = weight(author_txt:leeuwen in 1516) [ClassicSimilarity], result of:
          1.9070128 = score(doc=1516,freq=1.0), product of:
            0.55659795 = queryWeight, product of:
              1.0433354 = boost
              9.1365185 = idf(docFreq=12, maxDocs=44421)
              0.058389787 = queryNorm
            3.4261944 = fieldWeight in 1516, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.1365185 = idf(docFreq=12, maxDocs=44421)
              0.375 = fieldNorm(doc=1516)
        2.4332907 = weight(author_txt:bordons in 1516) [ClassicSimilarity], result of:
          2.4332907 = score(doc=1516,freq=1.0), product of:
            0.65478975 = queryWeight, product of:
              1.1316291 = boost
              9.909708 = idf(docFreq=5, maxDocs=44421)
              0.058389787 = queryNorm
            3.7161405 = fieldWeight in 1516, 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=1516)
    
  2. Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009) 5.02
    5.0161858 = sum of:
      5.0161858 = sum of:
        1.3992664 = weight(author_txt:costas in 3759) [ClassicSimilarity], result of:
          1.3992664 = score(doc=3759,freq=1.0), product of:
            0.511321 = queryWeight, product of:
              8.757029 = idf(docFreq=18, maxDocs=44421)
              0.058389787 = queryNorm
            2.7365713 = fieldWeight in 3759, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.757029 = idf(docFreq=18, maxDocs=44421)
              0.3125 = fieldNorm(doc=3759)
        1.5891774 = weight(author_txt:leeuwen in 3759) [ClassicSimilarity], result of:
          1.5891774 = score(doc=3759,freq=1.0), product of:
            0.55659795 = queryWeight, product of:
              1.0433354 = boost
              9.1365185 = idf(docFreq=12, maxDocs=44421)
              0.058389787 = queryNorm
            2.8551621 = fieldWeight in 3759, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.1365185 = idf(docFreq=12, maxDocs=44421)
              0.3125 = fieldNorm(doc=3759)
        2.0277421 = weight(author_txt:bordons in 3759) [ClassicSimilarity], result of:
          2.0277421 = score(doc=3759,freq=1.0), product of:
            0.65478975 = queryWeight, product of:
              1.1316291 = boost
              9.909708 = idf(docFreq=5, maxDocs=44421)
              0.058389787 = queryNorm
            3.0967836 = fieldWeight in 3759, 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=3759)
    
  3. Costas, R.; Leeuwen, T.N. van: Approaching the "reward triangle" : general analysis of the presence of funding acknowledgments and "peer interactive communication" in scientific publications (2012) 2.79
    2.7892141 = sum of:
      2.7892141 = product of:
        4.183821 = sum of:
          1.958973 = weight(author_txt:costas in 1363) [ClassicSimilarity], result of:
            1.958973 = score(doc=1363,freq=1.0), product of:
              0.511321 = queryWeight, product of:
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.058389787 = queryNorm
              3.8312001 = fieldWeight in 1363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.4375 = fieldNorm(doc=1363)
          2.2248483 = weight(author_txt:leeuwen in 1363) [ClassicSimilarity], result of:
            2.2248483 = score(doc=1363,freq=1.0), product of:
              0.55659795 = queryWeight, product of:
                1.0433354 = boost
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.058389787 = queryNorm
              3.9972267 = fieldWeight in 1363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.4375 = fieldNorm(doc=1363)
        0.6666667 = coord(2/3)
    
  4. Costas, R.; Leeuwen, T.N. van; Raan, A.F.J. van: Is scientific literature subject to a 'Sell-By-Date'? : a general methodology to analyze the 'durability' of scientific documents (2010) 1.99
    1.992296 = sum of:
      1.992296 = product of:
        2.9884439 = sum of:
          1.3992664 = weight(author_txt:costas in 320) [ClassicSimilarity], result of:
            1.3992664 = score(doc=320,freq=1.0), product of:
              0.511321 = queryWeight, product of:
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.058389787 = queryNorm
              2.7365713 = fieldWeight in 320, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.3125 = fieldNorm(doc=320)
          1.5891774 = weight(author_txt:leeuwen in 320) [ClassicSimilarity], result of:
            1.5891774 = score(doc=320,freq=1.0), product of:
              0.55659795 = queryWeight, product of:
                1.0433354 = boost
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.058389787 = queryNorm
              2.8551621 = fieldWeight in 320, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.1365185 = idf(docFreq=12, maxDocs=44421)
                0.3125 = fieldNorm(doc=320)
        0.6666667 = coord(2/3)
    
  5. Díaz-Faes, A.A.; Bordons, M.: Acknowledgments in scientific publications : presence in Spanish science and text patterns across disciplines (2014) 0.95
    0.94627976 = sum of:
      0.94627976 = product of:
        2.8388393 = sum of:
          2.8388393 = weight(author_txt:bordons in 2351) [ClassicSimilarity], result of:
            2.8388393 = score(doc=2351,freq=1.0), product of:
              0.65478975 = queryWeight, product of:
                1.1316291 = boost
                9.909708 = idf(docFreq=5, maxDocs=44421)
                0.058389787 = queryNorm
              4.3354974 = fieldWeight in 2351, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.909708 = idf(docFreq=5, maxDocs=44421)
                0.4375 = fieldNorm(doc=2351)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Nah, I.W.; Kang, D.-S.; Lee, D.-H.; Chung, Y.-C.: ¬A bibliometric evaluation of research performance in different subject categories (2009) 0.27
    0.26872373 = sum of:
      0.26872373 = product of:
        0.8397617 = sum of:
          0.052728157 = weight(abstract_txt:impact in 3772) [ClassicSimilarity], result of:
            0.052728157 = score(doc=3772,freq=1.0), product of:
              0.12299084 = queryWeight, product of:
                1.2995036 = boost
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.020696493 = queryNorm
              0.42871612 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.06392049 = weight(abstract_txt:individual in 3772) [ClassicSimilarity], result of:
            0.06392049 = score(doc=3772,freq=1.0), product of:
              0.13983132 = queryWeight, product of:
                1.3856174 = boost
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.020696493 = queryNorm
              0.45712572 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.057332568 = weight(abstract_txt:different in 3772) [ClassicSimilarity], result of:
            0.057332568 = score(doc=3772,freq=2.0), product of:
              0.118158706 = queryWeight, product of:
                1.5599821 = boost
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.020696493 = queryNorm
              0.48521662 = fieldWeight in 3772, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.07511965 = weight(abstract_txt:level in 3772) [ClassicSimilarity], result of:
            0.07511965 = score(doc=3772,freq=1.0), product of:
              0.17825587 = queryWeight, product of:
                1.9160581 = boost
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.020696493 = queryNorm
              0.42141473 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.0815448 = weight(abstract_txt:performance in 3772) [ClassicSimilarity], result of:
            0.0815448 = score(doc=3772,freq=1.0), product of:
              0.18828064 = queryWeight, product of:
                1.9691988 = boost
                4.619759 = idf(docFreq=1189, maxDocs=44421)
                0.020696493 = queryNorm
              0.43310243 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.619759 = idf(docFreq=1189, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.09722118 = weight(abstract_txt:research in 3772) [ClassicSimilarity], result of:
            0.09722118 = score(doc=3772,freq=5.0), product of:
              0.14678274 = queryWeight, product of:
                2.24465 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.020696493 = queryNorm
              0.6623475 = fieldWeight in 3772, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.19408314 = weight(abstract_txt:bibliometric in 3772) [ClassicSimilarity], result of:
            0.19408314 = score(doc=3772,freq=1.0), product of:
              0.33563456 = queryWeight, product of:
                2.6291785 = boost
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.020696493 = queryNorm
              0.5782573 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
          0.21781164 = weight(abstract_txt:scientists in 3772) [ClassicSimilarity], result of:
            0.21781164 = score(doc=3772,freq=1.0), product of:
              0.3989408 = queryWeight, product of:
                3.3098655 = boost
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.020696493 = queryNorm
              0.54597485 = fieldWeight in 3772, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.09375 = fieldNorm(doc=3772)
        0.32 = coord(8/25)
    
  2. Abramo, G.; D'Angelo, C.A.; Costa, F. Di: Identifying interdisciplinarity through the disciplinary classification of coauthors of scientific publications (2012) 0.24
    0.24021785 = sum of:
      0.24021785 = product of:
        0.7506808 = sum of:
          0.09102661 = weight(abstract_txt:grouped in 1491) [ClassicSimilarity], result of:
            0.09102661 = score(doc=1491,freq=1.0), product of:
              0.15863566 = queryWeight, product of:
                1.0435818 = boost
                7.344759 = idf(docFreq=77, maxDocs=44421)
                0.020696493 = queryNorm
              0.57380927 = fieldWeight in 1491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.344759 = idf(docFreq=77, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.024059076 = weight(abstract_txt:approach in 1491) [ClassicSimilarity], result of:
            0.024059076 = score(doc=1491,freq=1.0), product of:
              0.08231605 = queryWeight, product of:
                1.0631226 = boost
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.020696493 = queryNorm
              0.29227686 = fieldWeight in 1491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.04403281 = weight(abstract_txt:methodology in 1491) [ClassicSimilarity], result of:
            0.04403281 = score(doc=1491,freq=1.0), product of:
              0.123163715 = queryWeight, product of:
                1.3004166 = boost
                4.5761847 = idf(docFreq=1242, maxDocs=44421)
                0.020696493 = queryNorm
              0.35751444 = fieldWeight in 1491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5761847 = idf(docFreq=1242, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.04777714 = weight(abstract_txt:different in 1491) [ClassicSimilarity], result of:
            0.04777714 = score(doc=1491,freq=2.0), product of:
              0.118158706 = queryWeight, product of:
                1.5599821 = boost
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.020696493 = queryNorm
              0.40434718 = fieldWeight in 1491, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.06259971 = weight(abstract_txt:level in 1491) [ClassicSimilarity], result of:
            0.06259971 = score(doc=1491,freq=1.0), product of:
              0.17825587 = queryWeight, product of:
                1.9160581 = boost
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.020696493 = queryNorm
              0.35117894 = fieldWeight in 1491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.062756 = weight(abstract_txt:research in 1491) [ClassicSimilarity], result of:
            0.062756 = score(doc=1491,freq=3.0), product of:
              0.14678274 = queryWeight, product of:
                2.24465 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.020696493 = queryNorm
              0.42754346 = fieldWeight in 1491, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.16173595 = weight(abstract_txt:bibliometric in 1491) [ClassicSimilarity], result of:
            0.16173595 = score(doc=1491,freq=1.0), product of:
              0.33563456 = queryWeight, product of:
                2.6291785 = boost
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.020696493 = queryNorm
              0.48188108 = fieldWeight in 1491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
          0.25669348 = weight(abstract_txt:scientists in 1491) [ClassicSimilarity], result of:
            0.25669348 = score(doc=1491,freq=2.0), product of:
              0.3989408 = queryWeight, product of:
                3.3098655 = boost
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.020696493 = queryNorm
              0.6434375 = fieldWeight in 1491, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.078125 = fieldNorm(doc=1491)
        0.32 = coord(8/25)
    
  3. Abramo, G.; D'Angelo, C.A.; Viel, F.: Assessing the accuracy of the h- and g-indexes for measuring researchers' productivity (2013) 0.23
    0.22802609 = sum of:
      0.22802609 = product of:
        0.7125816 = sum of:
          0.039220978 = weight(abstract_txt:three in 1957) [ClassicSimilarity], result of:
            0.039220978 = score(doc=1957,freq=1.0), product of:
              0.114019066 = queryWeight, product of:
                1.2512089 = boost
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.020696493 = queryNorm
              0.34398612 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.053267077 = weight(abstract_txt:individual in 1957) [ClassicSimilarity], result of:
            0.053267077 = score(doc=1957,freq=1.0), product of:
              0.13983132 = queryWeight, product of:
                1.3856174 = boost
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.020696493 = queryNorm
              0.38093808 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.03378354 = weight(abstract_txt:different in 1957) [ClassicSimilarity], result of:
            0.03378354 = score(doc=1957,freq=1.0), product of:
              0.118158706 = queryWeight, product of:
                1.5599821 = boost
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.020696493 = queryNorm
              0.28591663 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6597328 = idf(docFreq=3107, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.06259971 = weight(abstract_txt:level in 1957) [ClassicSimilarity], result of:
            0.06259971 = score(doc=1957,freq=1.0), product of:
              0.17825587 = queryWeight, product of:
                1.9160581 = boost
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.020696493 = queryNorm
              0.35117894 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.14423239 = weight(abstract_txt:productivity in 1957) [ClassicSimilarity], result of:
            0.14423239 = score(doc=1957,freq=1.0), product of:
              0.27164835 = queryWeight, product of:
                1.9312773 = boost
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.020696493 = queryNorm
              0.5309526 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.036232196 = weight(abstract_txt:research in 1957) [ClassicSimilarity], result of:
            0.036232196 = score(doc=1957,freq=1.0), product of:
              0.14678274 = queryWeight, product of:
                2.24465 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.020696493 = queryNorm
              0.24684234 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.16173595 = weight(abstract_txt:bibliometric in 1957) [ClassicSimilarity], result of:
            0.16173595 = score(doc=1957,freq=1.0), product of:
              0.33563456 = queryWeight, product of:
                2.6291785 = boost
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.020696493 = queryNorm
              0.48188108 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
          0.18150972 = weight(abstract_txt:scientists in 1957) [ClassicSimilarity], result of:
            0.18150972 = score(doc=1957,freq=1.0), product of:
              0.3989408 = queryWeight, product of:
                3.3098655 = boost
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.020696493 = queryNorm
              0.45497906 = fieldWeight in 1957, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.078125 = fieldNorm(doc=1957)
        0.32 = coord(8/25)
    
  4. Haustein, S.; Sugimoto, C.; Larivière, V.: Social media in scholarly communication : Guest editorial (2015) 0.22
    0.22147012 = sum of:
      0.22147012 = product of:
        0.5536753 = sum of:
          0.03641065 = weight(abstract_txt:grouped in 4809) [ClassicSimilarity], result of:
            0.03641065 = score(doc=4809,freq=1.0), product of:
              0.15863566 = queryWeight, product of:
                1.0435818 = boost
                7.344759 = idf(docFreq=77, maxDocs=44421)
                0.020696493 = queryNorm
              0.22952372 = fieldWeight in 4809, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.344759 = idf(docFreq=77, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.04277978 = weight(abstract_txt:forth in 4809) [ClassicSimilarity], result of:
            0.04277978 = score(doc=4809,freq=1.0), product of:
              0.17663398 = queryWeight, product of:
                1.1011925 = boost
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.020696493 = queryNorm
              0.2421945 = fieldWeight in 4809, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.02485629 = weight(abstract_txt:impact in 4809) [ClassicSimilarity], result of:
            0.02485629 = score(doc=4809,freq=2.0), product of:
              0.12299084 = queryWeight, product of:
                1.2995036 = boost
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.020696493 = queryNorm
              0.20209871 = fieldWeight in 4809, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.03147086 = weight(abstract_txt:effects in 4809) [ClassicSimilarity], result of:
            0.03147086 = score(doc=4809,freq=1.0), product of:
              0.1813556 = queryWeight, product of:
                1.5779985 = boost
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.020696493 = queryNorm
              0.17353123 = fieldWeight in 4809, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.060380865 = weight(abstract_txt:assessment in 4809) [ClassicSimilarity], result of:
            0.060380865 = score(doc=4809,freq=3.0), product of:
              0.1941561 = queryWeight, product of:
                1.6327385 = boost
                5.7456303 = idf(docFreq=385, maxDocs=44421)
                0.020696493 = queryNorm
              0.31099135 = fieldWeight in 4809, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.7456303 = idf(docFreq=385, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.025039883 = weight(abstract_txt:level in 4809) [ClassicSimilarity], result of:
            0.025039883 = score(doc=4809,freq=1.0), product of:
              0.17825587 = queryWeight, product of:
                1.9160581 = boost
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.020696493 = queryNorm
              0.14047158 = fieldWeight in 4809, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.057692952 = weight(abstract_txt:productivity in 4809) [ClassicSimilarity], result of:
            0.057692952 = score(doc=4809,freq=1.0), product of:
              0.27164835 = queryWeight, product of:
                1.9312773 = boost
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.020696493 = queryNorm
              0.21238102 = fieldWeight in 4809, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.038344547 = weight(abstract_txt:research in 4809) [ClassicSimilarity], result of:
            0.038344547 = score(doc=4809,freq=7.0), product of:
              0.14678274 = queryWeight, product of:
                2.24465 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.020696493 = queryNorm
              0.26123336 = fieldWeight in 4809, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.09149167 = weight(abstract_txt:bibliometric in 4809) [ClassicSimilarity], result of:
            0.09149167 = score(doc=4809,freq=2.0), product of:
              0.33563456 = queryWeight, product of:
                2.6291785 = boost
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.020696493 = queryNorm
              0.2725931 = fieldWeight in 4809, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.168078 = idf(docFreq=252, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
          0.14520776 = weight(abstract_txt:scientists in 4809) [ClassicSimilarity], result of:
            0.14520776 = score(doc=4809,freq=4.0), product of:
              0.3989408 = queryWeight, product of:
                3.3098655 = boost
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.020696493 = queryNorm
              0.36398324 = fieldWeight in 4809, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.03125 = fieldNorm(doc=4809)
        0.4 = coord(10/25)
    
  5. Barjak, F.; Li, X.; Thelwall, M.: Which factors explain the Web impact of scientists' personal homepages? (2007) 0.20
    0.20380943 = sum of:
      0.20380943 = product of:
        0.7278908 = sum of:
          0.06151618 = weight(abstract_txt:impact in 1073) [ClassicSimilarity], result of:
            0.06151618 = score(doc=1073,freq=4.0), product of:
              0.12299084 = queryWeight, product of:
                1.2995036 = boost
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.020696493 = queryNorm
              0.5001688 = fieldWeight in 1073, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.572972 = idf(docFreq=1246, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.0645829 = weight(abstract_txt:individual in 1073) [ClassicSimilarity], result of:
            0.0645829 = score(doc=1073,freq=3.0), product of:
              0.13983132 = queryWeight, product of:
                1.3856174 = boost
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.020696493 = queryNorm
              0.4618629 = fieldWeight in 1073, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.8760076 = idf(docFreq=920, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.055074003 = weight(abstract_txt:effects in 1073) [ClassicSimilarity], result of:
            0.055074003 = score(doc=1073,freq=1.0), product of:
              0.1813556 = queryWeight, product of:
                1.5779985 = boost
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.020696493 = queryNorm
              0.30367965 = fieldWeight in 1073, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.07589811 = weight(abstract_txt:level in 1073) [ClassicSimilarity], result of:
            0.07589811 = score(doc=1073,freq=3.0), product of:
              0.17825587 = queryWeight, product of:
                1.9160581 = boost
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.020696493 = queryNorm
              0.42578185 = fieldWeight in 1073, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4950905 = idf(docFreq=1347, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.14278278 = weight(abstract_txt:productivity in 1073) [ClassicSimilarity], result of:
            0.14278278 = score(doc=1073,freq=2.0), product of:
              0.27164835 = queryWeight, product of:
                1.9312773 = boost
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.020696493 = queryNorm
              0.5256162 = fieldWeight in 1073, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.7961926 = idf(docFreq=134, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.043929197 = weight(abstract_txt:research in 1073) [ClassicSimilarity], result of:
            0.043929197 = score(doc=1073,freq=3.0), product of:
              0.14678274 = queryWeight, product of:
                2.24465 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.020696493 = queryNorm
              0.2992804 = fieldWeight in 1073, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
          0.28410763 = weight(abstract_txt:scientists in 1073) [ClassicSimilarity], result of:
            0.28410763 = score(doc=1073,freq=5.0), product of:
              0.3989408 = queryWeight, product of:
                3.3098655 = boost
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.020696493 = queryNorm
              0.71215487 = fieldWeight in 1073, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.823732 = idf(docFreq=356, maxDocs=44421)
                0.0546875 = fieldNorm(doc=1073)
        0.28 = coord(7/25)