Search (593 results, page 1 of 30)

  • × year_i:[2010 TO 2020}
  • × theme_ss:"Informetrie"
  1. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.04 
    0.0410558 = product of:
  0.0821116 = sum of:
    0.0821116 = sum of:
      0.007219314 = weight(_text_:s in 1239) [ClassicSimilarity], result of:
        0.007219314 = score(doc=1239,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.14414869 = fieldWeight in 1239, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.09375 = fieldNorm(doc=1239)
      0.07489228 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
        0.07489228 = score(doc=1239,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.46428138 = fieldWeight in 1239, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.09375 = fieldNorm(doc=1239)
  0.5 = coord(1/2)
    Date
    18. 3.2014 19:13:22
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.4, S.866-867
  2. Scholarly metrics under the microscope : from citation analysis to academic auditing (2015) 0.03 
    0.029132169 = product of:
  0.058264337 = sum of:
    0.058264337 = sum of:
      0.008336147 = weight(_text_:s in 4654) [ClassicSimilarity], result of:
        0.008336147 = score(doc=4654,freq=6.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.1664486 = fieldWeight in 4654, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0625 = fieldNorm(doc=4654)
      0.04992819 = weight(_text_:22 in 4654) [ClassicSimilarity], result of:
        0.04992819 = score(doc=4654,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.30952093 = fieldWeight in 4654, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=4654)
  0.5 = coord(1/2)
    Date
    22. 1.2017 17:12:50
    Footnote
    Rez. in JASIST 67(2017) no.2, S.537-538 (Ronald Rousseau).
    Pages
    976 S
    Type
    s
  3. Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014) 0.03 
    0.027370533 = product of:
  0.054741066 = sum of:
    0.054741066 = sum of:
      0.004812876 = weight(_text_:s in 1431) [ClassicSimilarity], result of:
        0.004812876 = score(doc=1431,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.09609913 = fieldWeight in 1431, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0625 = fieldNorm(doc=1431)
      0.04992819 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
        0.04992819 = score(doc=1431,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.30952093 = fieldWeight in 1431, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=1431)
  0.5 = coord(1/2)
    Date
    22. 8.2014 17:05:18
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.9, S.1939-1943
  4. Ohly, P.: Dimensions of globality : a bibliometric analysis (2016) 0.03 
    0.027370533 = product of:
  0.054741066 = sum of:
    0.054741066 = sum of:
      0.004812876 = weight(_text_:s in 4942) [ClassicSimilarity], result of:
        0.004812876 = score(doc=4942,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.09609913 = fieldWeight in 4942, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0625 = fieldNorm(doc=4942)
      0.04992819 = weight(_text_:22 in 4942) [ClassicSimilarity], result of:
        0.04992819 = score(doc=4942,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.30952093 = fieldWeight in 4942, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=4942)
  0.5 = coord(1/2)
    Date
    20. 1.2019 11:22:31
    Pages
    S.460-468
  5. Zhu, Q.; Kong, X.; Hong, S.; Li, J.; He, Z.: Global ontology research progress : a bibliometric analysis (2015) 0.02 
    0.024192361 = product of:
  0.048384722 = sum of:
    0.048384722 = sum of:
      0.0042540217 = weight(_text_:s in 2590) [ClassicSimilarity], result of:
        0.0042540217 = score(doc=2590,freq=4.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.08494043 = fieldWeight in 2590, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2590)
      0.0441307 = weight(_text_:22 in 2590) [ClassicSimilarity], result of:
        0.0441307 = score(doc=2590,freq=4.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.27358043 = fieldWeight in 2590, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2590)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
    17. 9.2018 18:22:23
    Source
    Aslib journal of information management. 67(2015) no.1, S.27-54
  6. Campanario, J.M.: Large increases and decreases in journal impact factors in only one year : the effect of journal self-citations (2011) 0.02 
    0.023949215 = product of:
  0.04789843 = sum of:
    0.04789843 = sum of:
      0.0042112665 = weight(_text_:s in 4187) [ClassicSimilarity], result of:
        0.0042112665 = score(doc=4187,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.08408674 = fieldWeight in 4187, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0546875 = fieldNorm(doc=4187)
      0.043687165 = weight(_text_:22 in 4187) [ClassicSimilarity], result of:
        0.043687165 = score(doc=4187,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.2708308 = fieldWeight in 4187, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=4187)
  0.5 = coord(1/2)
    Date
    22. 1.2011 12:53:00
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.2, S.230-235
  7. Ding, Y.: Applying weighted PageRank to author citation networks (2011) 0.02 
    0.023949215 = product of:
  0.04789843 = sum of:
    0.04789843 = sum of:
      0.0042112665 = weight(_text_:s in 4188) [ClassicSimilarity], result of:
        0.0042112665 = score(doc=4188,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.08408674 = fieldWeight in 4188, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0546875 = fieldNorm(doc=4188)
      0.043687165 = weight(_text_:22 in 4188) [ClassicSimilarity], result of:
        0.043687165 = score(doc=4188,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.2708308 = fieldWeight in 4188, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=4188)
  0.5 = coord(1/2)
    Date
    22. 1.2011 13:02:21
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.2, S.236-245
  8. Schlögl, C.: Internationale Sichtbarkeit der europäischen und insbesondere der deutschsprachigen Informationswissenschaft (2013) 0.02 
    0.023949215 = product of:
  0.04789843 = sum of:
    0.04789843 = sum of:
      0.0042112665 = weight(_text_:s in 900) [ClassicSimilarity], result of:
        0.0042112665 = score(doc=900,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.08408674 = fieldWeight in 900, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0546875 = fieldNorm(doc=900)
      0.043687165 = weight(_text_:22 in 900) [ClassicSimilarity], result of:
        0.043687165 = score(doc=900,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.2708308 = fieldWeight in 900, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=900)
  0.5 = coord(1/2)
    Date
    22. 3.2013 14:04:09
    Source
    Information - Wissenschaft und Praxis. 64(2013) H.1, S.1-8
  9. Vieira, E.S.; Cabral, J.A.S.; Gomes, J.A.N.F.: Definition of a model based on bibliometric indicators for assessing applicants to academic positions (2014) 0.02 
    0.023949215 = product of:
  0.04789843 = sum of:
    0.04789843 = sum of:
      0.0042112665 = weight(_text_:s in 1221) [ClassicSimilarity], result of:
        0.0042112665 = score(doc=1221,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.08408674 = fieldWeight in 1221, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0546875 = fieldNorm(doc=1221)
      0.043687165 = weight(_text_:22 in 1221) [ClassicSimilarity], result of:
        0.043687165 = score(doc=1221,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.2708308 = fieldWeight in 1221, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=1221)
  0.5 = coord(1/2)
    Date
    18. 3.2014 18:22:21
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.3, S.560-577
  10. Crespo, J.A.; Herranz, N.; Li, Y.; Ruiz-Castillo, J.: ¬The effect on citation inequality of differences in citation practices at the web of science subject category level (2014) 0.02 
    0.023569375 = product of:
  0.04713875 = sum of:
    0.04713875 = sum of:
      0.0030080476 = weight(_text_:s in 1291) [ClassicSimilarity], result of:
        0.0030080476 = score(doc=1291,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.060061958 = fieldWeight in 1291, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1291)
      0.0441307 = weight(_text_:22 in 1291) [ClassicSimilarity], result of:
        0.0441307 = score(doc=1291,freq=4.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.27358043 = fieldWeight in 1291, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1291)
  0.5 = coord(1/2)
    Abstract
    This article studies the impact of differences in citation practices at the subfield, or Web of Science subject category level, using the model introduced in Crespo, Li, and Ruiz-Castillo (2013a), according to which the number of citations received by an article depends on its underlying scientific influence and the field to which it belongs. We use the same Thomson Reuters data set of about 4.4 million articles used in Crespo et al. (2013a) to analyze 22 broad fields. The main results are the following: First, when the classification system goes from 22 fields to 219 subfields the effect on citation inequality of differences in citation practices increases from ?14% at the field level to 18% at the subfield level. Second, we estimate a set of exchange rates (ERs) over a wide [660, 978] citation quantile interval to express the citation counts of articles into the equivalent counts in the all-sciences case. In the fractional case, for example, we find that in 187 of 219 subfields the ERs are reliable in the sense that the coefficient of variation is smaller than or equal to 0.10. Third, in the fractional case the normalization of the raw data using the ERs (or subfield mean citations) as normalization factors reduces the importance of the differences in citation practices from 18% to 3.8% (3.4%) of overall citation inequality. Fourth, the results in the fractional case are essentially replicated when we adopt a multiplicative approach.
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.6, S.1244-1256
  11. Yan, E.: Finding knowledge paths among scientific disciplines (2014) 0.02 
    0.023569375 = product of:
  0.04713875 = sum of:
    0.04713875 = sum of:
      0.0030080476 = weight(_text_:s in 1534) [ClassicSimilarity], result of:
        0.0030080476 = score(doc=1534,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.060061958 = fieldWeight in 1534, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1534)
      0.0441307 = weight(_text_:22 in 1534) [ClassicSimilarity], result of:
        0.0441307 = score(doc=1534,freq=4.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.27358043 = fieldWeight in 1534, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1534)
  0.5 = coord(1/2)
    Date
    26.10.2014 20:22:22
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.11, S.2331-2347
  12. ¬Die deutsche Zeitschrift für Dokumentation, Informationswissenschaft und Informationspraxis von 1950 bis 2011 : eine vorläufige Bilanz in vier Abschnitten (2012) 0.02 
    0.023498198 = product of:
  0.046996396 = sum of:
    0.046996396 = sum of:
      0.009550256 = weight(_text_:s in 402) [ClassicSimilarity], result of:
        0.009550256 = score(doc=402,freq=14.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.19069082 = fieldWeight in 402, product of:
            3.7416575 = tf(freq=14.0), with freq of:
              14.0 = termFreq=14.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=402)
      0.03744614 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
        0.03744614 = score(doc=402,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 402, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=402)
  0.5 = coord(1/2)
    Date
    22. 7.2012 19:35:26
    Footnote
    Besteht aus 4 Teilen: Teil 1: Eden, D., A. Arndt, A. Hoffer, T. Raschke u. P. Schön: Die Nachrichten für Dokumentation in den Jahren 1950 bis 1962 (S.159-163). Teil 2: Brose, M., E. durst, D. Nitzsche, D. Veckenstedt u. R. Wein: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1963-1975 (S.164-170). Teil 3: Bösel, J., G. Ebert, P. Garz,, M. Iwanow u. B. Russ: Methoden und Ergebnisse einer statistischen Auswertung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1976 bis 1988 (S.171-174). Teil 4: Engelage, H., S. Jansen, R. Mertins, K. Redel u. S. Ring: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) / "Information. Wissenschaft & Praxis" (IWP) 1989-2011 (S.164-170).
    Source
    Information - Wissenschaft und Praxis. 63(2012) H.3, S.157-182
  13. Kumar, S.: Co-authorship networks : a review of the literature (2015) 0.02 
    0.021275483 = product of:
  0.042550966 = sum of:
    0.042550966 = sum of:
      0.0051048263 = weight(_text_:s in 2586) [ClassicSimilarity], result of:
        0.0051048263 = score(doc=2586,freq=4.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.101928525 = fieldWeight in 2586, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=2586)
      0.03744614 = weight(_text_:22 in 2586) [ClassicSimilarity], result of:
        0.03744614 = score(doc=2586,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 2586, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=2586)
  0.5 = coord(1/2)
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 67(2015) no.1, S.55-73
  14. Ajiferuke, I.; Lu, K.; Wolfram, D.: ¬A comparison of citer and citation-based measure outcomes for multiple disciplines (2010) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 4000) [ClassicSimilarity], result of:
        0.003609657 = score(doc=4000,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 4000, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=4000)
      0.03744614 = weight(_text_:22 in 4000) [ClassicSimilarity], result of:
        0.03744614 = score(doc=4000,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 4000, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=4000)
  0.5 = coord(1/2)
    Date
    28. 9.2010 12:54:22
    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.10, S.2086-2096
  15. Albarrán, P.; Ruiz-Castillo, J.: References made and citations received by scientific articles (2011) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 4185) [ClassicSimilarity], result of:
        0.003609657 = score(doc=4185,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 4185, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=4185)
      0.03744614 = weight(_text_:22 in 4185) [ClassicSimilarity], result of:
        0.03744614 = score(doc=4185,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 4185, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=4185)
  0.5 = coord(1/2)
    Abstract
    This article studies massive evidence about references made and citations received after a 5-year citation window by 3.7 million articles published in 1998 to 2002 in 22 scientific fields. We find that the distributions of references made and citations received share a number of basic features across sciences. Reference distributions are rather skewed to the right while citation distributions are even more highly skewed: The mean is about 20 percentage points to the right of the median, and articles with a remarkable or an outstanding number of citations represent about 9% of the total. Moreover, the existence of a power law representing the upper tail of citation distributions cannot be rejected in 17 fields whose articles represent 74.7% of the total. Contrary to the evidence in other contexts, the value of the scale parameter is above 3.5 in 13 of the 17 cases. Finally, power laws are typically small, but capture a considerable proportion of the total citations received.
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.1, S.40-49
  16. D'Angelo, C.A.; Giuffrida, C.; Abramo, G.: ¬A heuristic approach to author name disambiguation in bibliometrics databases for large-scale research assessments (2011) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 4190) [ClassicSimilarity], result of:
        0.003609657 = score(doc=4190,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 4190, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=4190)
      0.03744614 = weight(_text_:22 in 4190) [ClassicSimilarity], result of:
        0.03744614 = score(doc=4190,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 4190, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=4190)
  0.5 = coord(1/2)
    Date
    22. 1.2011 13:06:52
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.2, S.257-269
  17. Hicks, D.; Wang, J.: Coverage and overlap of the new social sciences and humanities journal lists (2011) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 4192) [ClassicSimilarity], result of:
        0.003609657 = score(doc=4192,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 4192, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=4192)
      0.03744614 = weight(_text_:22 in 4192) [ClassicSimilarity], result of:
        0.03744614 = score(doc=4192,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 4192, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=4192)
  0.5 = coord(1/2)
    Date
    22. 1.2011 13:21:28
    Source
    Journal of the American Society for Information Science and Technology. 62(2011) no.2, S.284-294
  18. Jovanovic, M.: ¬Eine kleine Frühgeschichte der Bibliometrie (2012) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 326) [ClassicSimilarity], result of:
        0.003609657 = score(doc=326,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 326, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=326)
      0.03744614 = weight(_text_:22 in 326) [ClassicSimilarity], result of:
        0.03744614 = score(doc=326,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 326, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=326)
  0.5 = coord(1/2)
    Date
    22. 7.2012 19:23:32
    Source
    Information - Wissenschaft und Praxis. 63(2012) H.2, S.71-80
  19. Frandsen, T.F.; Nicolaisen, J.: ¬The ripple effect : citation chain reactions of a nobel prize (2013) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 654) [ClassicSimilarity], result of:
        0.003609657 = score(doc=654,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 654, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=654)
      0.03744614 = weight(_text_:22 in 654) [ClassicSimilarity], result of:
        0.03744614 = score(doc=654,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 654, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=654)
  0.5 = coord(1/2)
    Date
    22. 3.2013 16:21:09
    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.3, S.437-447
  20. Bornmann, L.: How to analyze percentile citation impact data meaningfully in bibliometrics : the statistical analysis of distributions, percentile rank classes, and top-cited papers (2013) 0.02 
    0.0205279 = product of:
  0.0410558 = sum of:
    0.0410558 = sum of:
      0.003609657 = weight(_text_:s in 656) [ClassicSimilarity], result of:
        0.003609657 = score(doc=656,freq=2.0), product of:
          0.05008241 = queryWeight, product of:
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046063907 = queryNorm
          0.072074346 = fieldWeight in 656, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            1.0872376 = idf(docFreq=40523, maxDocs=44218)
            0.046875 = fieldNorm(doc=656)
      0.03744614 = weight(_text_:22 in 656) [ClassicSimilarity], result of:
        0.03744614 = score(doc=656,freq=2.0), product of:
          0.16130796 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046063907 = queryNorm
          0.23214069 = fieldWeight in 656, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=656)
  0.5 = coord(1/2)
    Date
    22. 3.2013 19:44:17
    Source
    Journal of the American Society for Information Science and Technology. 64(2013) no.3, S.587-595

Authors

Languages

  • e 559
  • d 32
  • More… Less…

Types

  • a 582
  • el 8
  • m 8
  • s 3
  • x 1
  • More… Less…

Themes

Subjects

Classifications