Document (#35337)

Author

Egghe, L.

Title

Influence of adding or deleting items and sources on the h-index

Source

Journal of the American Society for Information Science and Technology. 61(2010) no.2, S.370-373

Year

2010

Abstract

Adding or deleting items such as self-citations has an influence on the h-index of an author. This influence will be proved mathematically in this article. We hereby prove the experimental finding in E. Gianoli and M.A. Molina-Montenegro ([2009]) that the influence of adding or deleting self-citations on the h-index is greater for low values of the h-index. Why this is logical also is shown by a simple theoretical example. Adding or deleting sources such as adding or deleting minor contributions of an author also has an influence on the h-index of this author; this influence is modeled in this article. This model explains some practical examples found in X. Hu, R. Rousseau, and J. Chen (in press).

Theme

Informetrie

Object

h-index

Similar documents (author)

1. Egghe, L.: Little science, big science and beyond (1994) 4.74

   4.744121 = sum of:
     4.744121 = weight(author_txt:egghe in 6882) [ClassicSimilarity], result of:
       4.744121 = fieldWeight in 6882, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.590594 = idf(docFreq=60, maxDocs=44421)
         0.625 = fieldNorm(doc=6882)
   

2. Egghe, L.: Expansion of the field of informetrics : the second special issue (2006) 4.74

   4.744121 = sum of:
     4.744121 = weight(author_txt:egghe in 7118) [ClassicSimilarity], result of:
       4.744121 = fieldWeight in 7118, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.590594 = idf(docFreq=60, maxDocs=44421)
         0.625 = fieldNorm(doc=7118)
   

3. Egghe, L.: Expansion of the field of informetrics : origins and consequences (2005) 4.74

   4.744121 = sum of:
     4.744121 = weight(author_txt:egghe in 1978) [ClassicSimilarity], result of:
       4.744121 = fieldWeight in 1978, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.590594 = idf(docFreq=60, maxDocs=44421)
         0.625 = fieldNorm(doc=1978)
   

4. Egghe, L.: ¬The amount of actions needed for shelving and reshelving (1996) 4.74

   4.744121 = sum of:
     4.744121 = weight(author_txt:egghe in 4462) [ClassicSimilarity], result of:
       4.744121 = fieldWeight in 4462, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.590594 = idf(docFreq=60, maxDocs=44421)
         0.625 = fieldNorm(doc=4462)
   

5. Egghe, L.: Special features of the author - publication relationship and a new explanation of Lotka's law based on convolution theory (1994) 4.74

   4.744121 = sum of:
     4.744121 = weight(author_txt:egghe in 5136) [ClassicSimilarity], result of:
       4.744121 = fieldWeight in 5136, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.590594 = idf(docFreq=60, maxDocs=44421)
         0.625 = fieldNorm(doc=5136)
   

Similar documents (content)

1. Liu, X.; Qin, J.: ¬An interactive metadata model for structural, descriptive, and referential representation of scholarly output (2014) 0.21

   0.21279353 = sum of:
     0.21279353 = product of:
       0.6649798 = sum of:
         0.0088375015 = weight(abstract_txt:also in 2253) [ClassicSimilarity], result of:
           0.0088375015 = score(doc=2253,freq=1.0), product of:
             0.041649546 = queryWeight, product of:
               1.1283013 = boost
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.010872915 = queryNorm
             0.21218722 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.009042218 = weight(abstract_txt:such in 2253) [ClassicSimilarity], result of:
           0.009042218 = score(doc=2253,freq=1.0), product of:
             0.042290285 = queryWeight, product of:
               1.136947 = boost
               3.42101 = idf(docFreq=3945, maxDocs=44421)
               0.010872915 = queryNorm
             0.21381313 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.42101 = idf(docFreq=3945, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.017516801 = weight(abstract_txt:article in 2253) [ClassicSimilarity], result of:
           0.017516801 = score(doc=2253,freq=2.0), product of:
             0.052161552 = queryWeight, product of:
               1.2626855 = boost
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.010872915 = queryNorm
             0.33581826 = fieldWeight in 2253, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.034227602 = weight(abstract_txt:citations in 2253) [ClassicSimilarity], result of:
           0.034227602 = score(doc=2253,freq=1.0), product of:
             0.10271683 = queryWeight, product of:
               1.7719063 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.010872915 = queryNorm
             0.33322293 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.038538486 = weight(abstract_txt:self in 2253) [ClassicSimilarity], result of:
           0.038538486 = score(doc=2253,freq=1.0), product of:
             0.11116986 = queryWeight, product of:
               1.843374 = boost
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.010872915 = queryNorm
             0.3466631 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.011012704 = weight(abstract_txt:this in 2253) [ClassicSimilarity], result of:
           0.011012704 = score(doc=2253,freq=1.0), product of:
             0.07322779 = queryWeight, product of:
               2.7989292 = boost
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.010872915 = queryNorm
             0.15038967 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.16664474 = weight(abstract_txt:adding in 2253) [ClassicSimilarity], result of:
           0.16664474 = score(doc=2253,freq=1.0), product of:
             0.40046543 = queryWeight, product of:
               5.531876 = boost
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.010872915 = queryNorm
             0.41612765 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
         0.37915972 = weight(abstract_txt:deleting in 2253) [ClassicSimilarity], result of:
           0.37915972 = score(doc=2253,freq=1.0), product of:
             0.69276416 = queryWeight, product of:
               7.2758317 = boost
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.010872915 = queryNorm
             0.5473143 = fieldWeight in 2253, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.0625 = fieldNorm(doc=2253)
       0.32 = coord(8/25)
   

2. Campanario, J.M.: Self-citations that contribute to the journal impact factor : an investment-benefit-yield analysis (2010) 0.17

   0.17481136 = sum of:
     0.17481136 = product of:
       0.8740568 = sum of:
         0.09566906 = weight(abstract_txt:citations in 124) [ClassicSimilarity], result of:
           0.09566906 = score(doc=124,freq=5.0), product of:
             0.10271683 = queryWeight, product of:
               1.7719063 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.010872915 = queryNorm
             0.9313864 = fieldWeight in 124, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.078125 = fieldNorm(doc=124)
         0.10771834 = weight(abstract_txt:self in 124) [ClassicSimilarity], result of:
           0.10771834 = score(doc=124,freq=5.0), product of:
             0.11116986 = queryWeight, product of:
               1.843374 = boost
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.010872915 = queryNorm
             0.9689528 = fieldWeight in 124, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.078125 = fieldNorm(doc=124)
         0.075623915 = weight(abstract_txt:index in 124) [ClassicSimilarity], result of:
           0.075623915 = score(doc=124,freq=1.0), product of:
             0.20379964 = queryWeight, product of:
               3.946314 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.010872915 = queryNorm
             0.37106994 = fieldWeight in 124, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=124)
         0.121095866 = weight(abstract_txt:influence in 124) [ClassicSimilarity], result of:
           0.121095866 = score(doc=124,freq=1.0), product of:
             0.2964221 = queryWeight, product of:
               5.2135777 = boost
               5.229121 = idf(docFreq=646, maxDocs=44421)
               0.010872915 = queryNorm
             0.4085251 = fieldWeight in 124, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.229121 = idf(docFreq=646, maxDocs=44421)
               0.078125 = fieldNorm(doc=124)
         0.47394964 = weight(abstract_txt:deleting in 124) [ClassicSimilarity], result of:
           0.47394964 = score(doc=124,freq=1.0), product of:
             0.69276416 = queryWeight, product of:
               7.2758317 = boost
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.010872915 = queryNorm
             0.6841428 = fieldWeight in 124, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.078125 = fieldNorm(doc=124)
       0.2 = coord(5/25)
   

3. Egghe, L.: ¬The influence of transformations on the h-index and the g-index (2008) 0.16

   0.16003184 = sum of:
     0.16003184 = product of:
       0.57154226 = sum of:
         0.013256252 = weight(abstract_txt:also in 2881) [ClassicSimilarity], result of:
           0.013256252 = score(doc=2881,freq=1.0), product of:
             0.041649546 = queryWeight, product of:
               1.1283013 = boost
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.010872915 = queryNorm
             0.31828082 = fieldWeight in 2881, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.026275203 = weight(abstract_txt:article in 2881) [ClassicSimilarity], result of:
           0.026275203 = score(doc=2881,freq=2.0), product of:
             0.052161552 = queryWeight, product of:
               1.2626855 = boost
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.010872915 = queryNorm
             0.5037274 = fieldWeight in 2881, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.036146626 = weight(abstract_txt:sources in 2881) [ClassicSimilarity], result of:
           0.036146626 = score(doc=2881,freq=1.0), product of:
             0.08129084 = queryWeight, product of:
               1.5763068 = boost
               4.743019 = idf(docFreq=1051, maxDocs=44421)
               0.010872915 = queryNorm
             0.44465804 = fieldWeight in 2881, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.743019 = idf(docFreq=1051, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.058825593 = weight(abstract_txt:items in 2881) [ClassicSimilarity], result of:
           0.058825593 = score(doc=2881,freq=1.0), product of:
             0.11247103 = queryWeight, product of:
               1.8541304 = boost
               5.5789747 = idf(docFreq=455, maxDocs=44421)
               0.010872915 = queryNorm
             0.52302885 = fieldWeight in 2881, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5789747 = idf(docFreq=455, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.028611843 = weight(abstract_txt:this in 2881) [ClassicSimilarity], result of:
           0.028611843 = score(doc=2881,freq=3.0), product of:
             0.07322779 = queryWeight, product of:
               2.7989292 = boost
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.010872915 = queryNorm
             0.39072382 = fieldWeight in 2881, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.20292027 = weight(abstract_txt:index in 2881) [ClassicSimilarity], result of:
           0.20292027 = score(doc=2881,freq=5.0), product of:
             0.20379964 = queryWeight, product of:
               3.946314 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.010872915 = queryNorm
             0.99568516 = fieldWeight in 2881, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
         0.20550649 = weight(abstract_txt:influence in 2881) [ClassicSimilarity], result of:
           0.20550649 = score(doc=2881,freq=2.0), product of:
             0.2964221 = queryWeight, product of:
               5.2135777 = boost
               5.229121 = idf(docFreq=646, maxDocs=44421)
               0.010872915 = queryNorm
             0.69329005 = fieldWeight in 2881, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.229121 = idf(docFreq=646, maxDocs=44421)
               0.09375 = fieldNorm(doc=2881)
       0.28 = coord(7/25)
   

4. Frandsen, T.F.; Wouters, P.: Turning working papers into journal articles : an exercise in microbibliometrics (2009) 0.15

   0.14791746 = sum of:
     0.14791746 = product of:
       0.7395873 = sum of:
         0.011046877 = weight(abstract_txt:also in 3757) [ClassicSimilarity], result of:
           0.011046877 = score(doc=3757,freq=1.0), product of:
             0.041649546 = queryWeight, product of:
               1.1283013 = boost
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.010872915 = queryNorm
             0.26523402 = fieldWeight in 3757, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.078125 = fieldNorm(doc=3757)
         0.026817016 = weight(abstract_txt:article in 3757) [ClassicSimilarity], result of:
           0.026817016 = score(doc=3757,freq=3.0), product of:
             0.052161552 = queryWeight, product of:
               1.2626855 = boost
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.010872915 = queryNorm
             0.5141146 = fieldWeight in 3757, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.078125 = fieldNorm(doc=3757)
         0.019467892 = weight(abstract_txt:this in 3757) [ClassicSimilarity], result of:
           0.019467892 = score(doc=3757,freq=2.0), product of:
             0.07322779 = queryWeight, product of:
               2.7989292 = boost
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.010872915 = queryNorm
             0.26585388 = fieldWeight in 3757, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.078125 = fieldNorm(doc=3757)
         0.20830591 = weight(abstract_txt:adding in 3757) [ClassicSimilarity], result of:
           0.20830591 = score(doc=3757,freq=1.0), product of:
             0.40046543 = queryWeight, product of:
               5.531876 = boost
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.010872915 = queryNorm
             0.52015954 = fieldWeight in 3757, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.078125 = fieldNorm(doc=3757)
         0.47394964 = weight(abstract_txt:deleting in 3757) [ClassicSimilarity], result of:
           0.47394964 = score(doc=3757,freq=1.0), product of:
             0.69276416 = queryWeight, product of:
               7.2758317 = boost
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.010872915 = queryNorm
             0.6841428 = fieldWeight in 3757, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.078125 = fieldNorm(doc=3757)
       0.2 = coord(5/25)
   

5. Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003) 0.12

   0.115052 = sum of:
     0.115052 = product of:
       0.4109 = sum of:
         0.0077328137 = weight(abstract_txt:also in 171) [ClassicSimilarity], result of:
           0.0077328137 = score(doc=171,freq=1.0), product of:
             0.041649546 = queryWeight, product of:
               1.1283013 = boost
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.010872915 = queryNorm
             0.18566382 = fieldWeight in 171, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3949955 = idf(docFreq=4049, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.07187275 = weight(abstract_txt:rousseau in 171) [ClassicSimilarity], result of:
           0.07187275 = score(doc=171,freq=1.0), product of:
             0.14613405 = queryWeight, product of:
               1.4944475 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.010872915 = queryNorm
             0.49182755 = fieldWeight in 171, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.029949155 = weight(abstract_txt:citations in 171) [ClassicSimilarity], result of:
           0.029949155 = score(doc=171,freq=1.0), product of:
             0.10271683 = queryWeight, product of:
               1.7719063 = boost
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.010872915 = queryNorm
             0.29157007 = fieldWeight in 171, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.331567 = idf(docFreq=583, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.03372118 = weight(abstract_txt:self in 171) [ClassicSimilarity], result of:
           0.03372118 = score(doc=171,freq=1.0), product of:
             0.11116986 = queryWeight, product of:
               1.843374 = boost
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.010872915 = queryNorm
             0.3033302 = fieldWeight in 171, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5466094 = idf(docFreq=470, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.051775616 = weight(abstract_txt:author in 171) [ClassicSimilarity], result of:
           0.051775616 = score(doc=171,freq=2.0), product of:
             0.13442783 = queryWeight, product of:
               2.4826195 = boost
               4.980042 = idf(docFreq=829, maxDocs=44421)
               0.010872915 = queryNorm
             0.38515547 = fieldWeight in 171, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.980042 = idf(docFreq=829, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.009636116 = weight(abstract_txt:this in 171) [ClassicSimilarity], result of:
           0.009636116 = score(doc=171,freq=1.0), product of:
             0.07322779 = queryWeight, product of:
               2.7989292 = boost
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.010872915 = queryNorm
             0.13159096 = fieldWeight in 171, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4062347 = idf(docFreq=10885, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
         0.20621234 = weight(abstract_txt:adding in 171) [ClassicSimilarity], result of:
           0.20621234 = score(doc=171,freq=2.0), product of:
             0.40046543 = queryWeight, product of:
               5.531876 = boost
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.010872915 = queryNorm
             0.5149317 = fieldWeight in 171, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.6580424 = idf(docFreq=154, maxDocs=44421)
               0.0546875 = fieldNorm(doc=171)
       0.28 = coord(7/25)