Search (9 results, page 1 of 1)

  • × theme_ss:"Citation indexing"
  • × theme_ss:"Informetrie"
  1. Leydesdorff, L.; Opthof, T.: Citation analysis with medical subject Headings (MeSH) using the Web of Knowledge : a new routine (2013) 0.03
    0.028232787 = product of:
      0.056465574 = sum of:
        0.056465574 = product of:
          0.11293115 = sum of:
            0.11293115 = weight(_text_:headings in 943) [ClassicSimilarity], result of:
              0.11293115 = score(doc=943,freq=4.0), product of:
                0.24837378 = queryWeight, product of:
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.051211677 = queryNorm
                0.45468226 = fieldWeight in 943, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.046875 = fieldNorm(doc=943)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Citation analysis of documents retrieved from the Medline database (at the Web of Knowledge) has been possible only on a case-by-case basis. A technique is presented here for citation analysis in batch mode using both Medical Subject Headings (MeSH) at the Web of Knowledge and the Science Citation Index at the Web of Science (WoS). This freeware routine is applied to the case of "Brugada Syndrome," a specific disease and field of research (since 1992). The journals containing these publications, for example, are attributed to WoS categories other than "cardiac and cardiovascular systems", perhaps because of the possibility of genetic testing for this syndrome in the clinic. With this routine, all the instruments available for citation analysis can now be used on the basis of MeSH terms. Other options for crossing between Medline, WoS, and Scopus are also reviewed.
  2. Nicolaisen, J.: Citation analysis (2007) 0.03
    0.0277539 = product of:
      0.0555078 = sum of:
        0.0555078 = product of:
          0.1110156 = sum of:
            0.1110156 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
              0.1110156 = score(doc=6091,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.61904186 = fieldWeight in 6091, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=6091)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    13. 7.2008 19:53:22
  3. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02
    0.024531214 = product of:
      0.049062427 = sum of:
        0.049062427 = product of:
          0.098124854 = sum of:
            0.098124854 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
              0.098124854 = score(doc=3925,freq=4.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.54716086 = fieldWeight in 3925, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3925)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 15:22:28
  4. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01
    0.014718729 = product of:
      0.029437458 = sum of:
        0.029437458 = product of:
          0.058874916 = sum of:
            0.058874916 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.058874916 = score(doc=2763,freq=4.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.32829654 = fieldWeight in 2763, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2763)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 19:22:35
  5. Chan, H.C.; Kim, H.-W.; Tan, W.C.: Information systems citation patterns from International Conference on Information Systems articles (2006) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 201) [ClassicSimilarity], result of:
              0.04163085 = score(doc=201,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 201, 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=201)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    3. 1.2007 17:22:03
  6. H-Index auch im Web of Science (2008) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 590) [ClassicSimilarity], result of:
              0.04163085 = score(doc=590,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 590, 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=590)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    6. 4.2008 19:04:22
  7. Mingers, J.; Burrell, Q.L.: Modeling citation behavior in Management Science journals (2006) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 994) [ClassicSimilarity], result of:
              0.04163085 = score(doc=994,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 994, 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=994)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    26.12.2007 19:22:05
  8. Hayer, L.: Lazarsfeld zitiert : eine bibliometrische Analyse (2008) 0.01
    0.008673094 = product of:
      0.017346188 = sum of:
        0.017346188 = product of:
          0.034692377 = sum of:
            0.034692377 = weight(_text_:22 in 1934) [ClassicSimilarity], result of:
              0.034692377 = score(doc=1934,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.19345059 = fieldWeight in 1934, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1934)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 6.2008 12:54:12
  9. Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003) 0.01
    0.006938475 = product of:
      0.01387695 = sum of:
        0.01387695 = product of:
          0.0277539 = sum of:
            0.0277539 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
              0.0277539 = score(doc=5171,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.15476047 = fieldWeight in 5171, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=5171)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    9. 7.2006 10:22:35