Document (#12370)

Author
Persson, O.
Beckmann, M.
Title
Locating the network of interacting authors in scientific specialities
Source
Scientometrics. 33(1995) no.3, S.351-366
Year
1995
Abstract
Seeks to describe the social networks, or invisible colleges, that make up a scientific speciality, in terms of mathematically precise sets generated by document citations and accessible through the Social Science Citation Index. The document and author sets that encompass a scientific specialty are the basis for some interdependent citation matrices. The method of construction of these sets and matrices is illustrated through an application to the literature on invisible colleges
Theme
Citation indexing
Informetrie

Similar documents (author)

  1. Persson, O.; Melin, G.: Equalization, growth and integration of science (1996) 1.75
    1.7473463 = sum of:
      1.7473463 = product of:
        3.4946926 = sum of:
          3.4946926 = weight(author_txt:persson in 6698) [ClassicSimilarity], result of:
            3.4946926 = score(doc=6698,freq=1.0), product of:
              0.7167882 = queryWeight, product of:
                1.0138843 = boost
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.07250272 = queryNorm
              4.8754888 = fieldWeight in 6698, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.5 = fieldNorm(doc=6698)
        0.5 = coord(1/2)
    
  2. Melin, G.; Persson, O.: Hotel cosmopolitan : a bibliometric study of collaboration at some European universities (1998) 1.75
    1.7473463 = sum of:
      1.7473463 = product of:
        3.4946926 = sum of:
          3.4946926 = weight(author_txt:persson in 329) [ClassicSimilarity], result of:
            3.4946926 = score(doc=329,freq=1.0), product of:
              0.7167882 = queryWeight, product of:
                1.0138843 = boost
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.07250272 = queryNorm
              4.8754888 = fieldWeight in 329, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.5 = fieldNorm(doc=329)
        0.5 = coord(1/2)
    
  3. Järvelin, K.; Persson, O.: ¬The DCI-index : discounted cumulated impact-based research evaluation (2008) 1.75
    1.7473463 = sum of:
      1.7473463 = product of:
        3.4946926 = sum of:
          3.4946926 = weight(author_txt:persson in 2332) [ClassicSimilarity], result of:
            3.4946926 = score(doc=2332,freq=1.0), product of:
              0.7167882 = queryWeight, product of:
                1.0138843 = boost
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.07250272 = queryNorm
              4.8754888 = fieldWeight in 2332, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.5 = fieldNorm(doc=2332)
        0.5 = coord(1/2)
    
  4. Järvelin, K.; Persson, O.: ¬The DCI index : discounted cumulated impact-based research evaluation (2008) 1.75
    1.7473463 = sum of:
      1.7473463 = product of:
        3.4946926 = sum of:
          3.4946926 = weight(author_txt:persson in 2694) [ClassicSimilarity], result of:
            3.4946926 = score(doc=2694,freq=1.0), product of:
              0.7167882 = queryWeight, product of:
                1.0138843 = boost
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.07250272 = queryNorm
              4.8754888 = fieldWeight in 2694, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.5 = fieldNorm(doc=2694)
        0.5 = coord(1/2)
    
  5. Leydesdorff, L.; Persson, O.: Mapping the geography of science : distribution patterns and networks of relations among cities and institutes (2010) 1.75
    1.7473463 = sum of:
      1.7473463 = product of:
        3.4946926 = sum of:
          3.4946926 = weight(author_txt:persson in 3704) [ClassicSimilarity], result of:
            3.4946926 = score(doc=3704,freq=1.0), product of:
              0.7167882 = queryWeight, product of:
                1.0138843 = boost
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.07250272 = queryNorm
              4.8754888 = fieldWeight in 3704, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.7509775 = idf(docFreq=6, maxDocs=44218)
                0.5 = fieldNorm(doc=3704)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Milard, B.: ¬The social circles behind scientific references : relationships between citing and cited authors in chemistry publications (2014) 0.17
    0.16609827 = sum of:
      0.16609827 = product of:
        0.69207615 = sum of:
          0.03227609 = weight(abstract_txt:networks in 1539) [ClassicSimilarity], result of:
            0.03227609 = score(doc=1539,freq=1.0), product of:
              0.08048537 = queryWeight, product of:
                1.0054489 = boost
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.015594914 = queryNorm
              0.4010181 = fieldWeight in 1539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
          0.06202146 = weight(abstract_txt:social in 1539) [ClassicSimilarity], result of:
            0.06202146 = score(doc=1539,freq=3.0), product of:
              0.10867439 = queryWeight, product of:
                1.6522667 = boost
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.015594914 = queryNorm
              0.57070905 = fieldWeight in 1539, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
          0.05604077 = weight(abstract_txt:citation in 1539) [ClassicSimilarity], result of:
            0.05604077 = score(doc=1539,freq=1.0), product of:
              0.14649037 = queryWeight, product of:
                1.9183202 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.015594914 = queryNorm
              0.38255602 = fieldWeight in 1539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
          0.10124912 = weight(abstract_txt:scientific in 1539) [ClassicSimilarity], result of:
            0.10124912 = score(doc=1539,freq=2.0), product of:
              0.19743353 = queryWeight, product of:
                2.7275496 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.015594914 = queryNorm
              0.5128264 = fieldWeight in 1539, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
          0.2170164 = weight(abstract_txt:invisible in 1539) [ClassicSimilarity], result of:
            0.2170164 = score(doc=1539,freq=1.0), product of:
              0.36124462 = queryWeight, product of:
                3.0124319 = boost
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.015594914 = queryNorm
              0.6007464 = fieldWeight in 1539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
          0.22347231 = weight(abstract_txt:colleges in 1539) [ClassicSimilarity], result of:
            0.22347231 = score(doc=1539,freq=1.0), product of:
              0.36837387 = queryWeight, product of:
                3.0420122 = boost
                7.7650614 = idf(docFreq=50, maxDocs=44218)
                0.015594914 = queryNorm
              0.6066454 = fieldWeight in 1539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7650614 = idf(docFreq=50, maxDocs=44218)
                0.078125 = fieldNorm(doc=1539)
        0.24 = coord(6/25)
    
  2. Chen, C.: Visualizing scientific paradigms : an introduction (2003) 0.12
    0.11725864 = sum of:
      0.11725864 = product of:
        0.7328665 = sum of:
          0.055474825 = weight(abstract_txt:accessible in 1455) [ClassicSimilarity], result of:
            0.055474825 = score(doc=1455,freq=1.0), product of:
              0.10226793 = queryWeight, product of:
                1.1333688 = boost
                5.7860904 = idf(docFreq=368, maxDocs=44218)
                0.015594914 = queryNorm
              0.54244596 = fieldWeight in 1455, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7860904 = idf(docFreq=368, maxDocs=44218)
                0.09375 = fieldNorm(doc=1455)
          0.1488052 = weight(abstract_txt:scientific in 1455) [ClassicSimilarity], result of:
            0.1488052 = score(doc=1455,freq=3.0), product of:
              0.19743353 = queryWeight, product of:
                2.7275496 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.015594914 = queryNorm
              0.7536977 = fieldWeight in 1455, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.09375 = fieldNorm(doc=1455)
          0.2604197 = weight(abstract_txt:invisible in 1455) [ClassicSimilarity], result of:
            0.2604197 = score(doc=1455,freq=1.0), product of:
              0.36124462 = queryWeight, product of:
                3.0124319 = boost
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.015594914 = queryNorm
              0.7208957 = fieldWeight in 1455, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.09375 = fieldNorm(doc=1455)
          0.2681668 = weight(abstract_txt:colleges in 1455) [ClassicSimilarity], result of:
            0.2681668 = score(doc=1455,freq=1.0), product of:
              0.36837387 = queryWeight, product of:
                3.0420122 = boost
                7.7650614 = idf(docFreq=50, maxDocs=44218)
                0.015594914 = queryNorm
              0.72797453 = fieldWeight in 1455, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7650614 = idf(docFreq=50, maxDocs=44218)
                0.09375 = fieldNorm(doc=1455)
        0.16 = coord(4/25)
    
  3. Moya Anegón, F. de; López-Huertas, M.J.: ¬An automatic model for updating the conceptual structure of a scientific discipline (2000) 0.11
    0.111978896 = sum of:
      0.111978896 = product of:
        0.46657875 = sum of:
          0.022593262 = weight(abstract_txt:networks in 126) [ClassicSimilarity], result of:
            0.022593262 = score(doc=126,freq=1.0), product of:
              0.08048537 = queryWeight, product of:
                1.0054489 = boost
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.015594914 = queryNorm
              0.28071266 = fieldWeight in 126, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
          0.028113512 = weight(abstract_txt:generated in 126) [ClassicSimilarity], result of:
            0.028113512 = score(doc=126,freq=1.0), product of:
              0.09311244 = queryWeight, product of:
                1.0814474 = boost
                5.52102 = idf(docFreq=480, maxDocs=44218)
                0.015594914 = queryNorm
              0.3019308 = fieldWeight in 126, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.52102 = idf(docFreq=480, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
          0.05285437 = weight(abstract_txt:document in 126) [ClassicSimilarity], result of:
            0.05285437 = score(doc=126,freq=4.0), product of:
              0.112574905 = queryWeight, product of:
                1.6816567 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.015594914 = queryNorm
              0.46950403 = fieldWeight in 126, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
          0.06794582 = weight(abstract_txt:citation in 126) [ClassicSimilarity], result of:
            0.06794582 = score(doc=126,freq=3.0), product of:
              0.14649037 = queryWeight, product of:
                1.9183202 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.015594914 = queryNorm
              0.4638245 = fieldWeight in 126, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
          0.050115757 = weight(abstract_txt:scientific in 126) [ClassicSimilarity], result of:
            0.050115757 = score(doc=126,freq=1.0), product of:
              0.19743353 = queryWeight, product of:
                2.7275496 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.015594914 = queryNorm
              0.2538361 = fieldWeight in 126, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
          0.24495602 = weight(abstract_txt:matrices in 126) [ClassicSimilarity], result of:
            0.24495602 = score(doc=126,freq=2.0), product of:
              0.39426637 = queryWeight, product of:
                3.1471064 = boost
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.015594914 = queryNorm
              0.62129575 = fieldWeight in 126, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.0546875 = fieldNorm(doc=126)
        0.24 = coord(6/25)
    
  4. Kretschmer, H.: Similarities and dissimilarities in coauthorship networks : Gestalt theory as explanation for well-ordered collaboration structures and production of scientific literature (2002) 0.10
    0.097013146 = sum of:
      0.097013146 = product of:
        0.40422145 = sum of:
          0.04472306 = weight(abstract_txt:networks in 819) [ClassicSimilarity], result of:
            0.04472306 = score(doc=819,freq=3.0), product of:
              0.08048537 = queryWeight, product of:
                1.0054489 = boost
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.015594914 = queryNorm
              0.555667 = fieldWeight in 819, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.133032 = idf(docFreq=708, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
          0.05848355 = weight(abstract_txt:precise in 819) [ClassicSimilarity], result of:
            0.05848355 = score(doc=819,freq=1.0), product of:
              0.13881151 = queryWeight, product of:
                1.3204267 = boost
                6.7410603 = idf(docFreq=141, maxDocs=44218)
                0.015594914 = queryNorm
              0.42131627 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7410603 = idf(docFreq=141, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
          0.09458511 = weight(abstract_txt:encompass in 819) [ClassicSimilarity], result of:
            0.09458511 = score(doc=819,freq=1.0), product of:
              0.19125737 = queryWeight, product of:
                1.5499249 = boost
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.015594914 = queryNorm
              0.4945436 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
          0.028646484 = weight(abstract_txt:social in 819) [ClassicSimilarity], result of:
            0.028646484 = score(doc=819,freq=1.0), product of:
              0.10867439 = queryWeight, product of:
                1.6522667 = boost
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.015594914 = queryNorm
              0.26359922 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
          0.13295063 = weight(abstract_txt:mathematically in 819) [ClassicSimilarity], result of:
            0.13295063 = score(doc=819,freq=1.0), product of:
              0.23999192 = queryWeight, product of:
                1.7362005 = boost
                8.863674 = idf(docFreq=16, maxDocs=44218)
                0.015594914 = queryNorm
              0.55397964 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.863674 = idf(docFreq=16, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
          0.044832617 = weight(abstract_txt:citation in 819) [ClassicSimilarity], result of:
            0.044832617 = score(doc=819,freq=1.0), product of:
              0.14649037 = queryWeight, product of:
                1.9183202 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.015594914 = queryNorm
              0.30604482 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0625 = fieldNorm(doc=819)
        0.24 = coord(6/25)
    
  5. Leydesdorff, L.; Vaughan, L.: Co-occurrence matrices and their applications in information science : extending ACA to the Web environment (2006) 0.10
    0.096933916 = sum of:
      0.096933916 = product of:
        0.605837 = sum of:
          0.05689864 = weight(abstract_txt:illustrated in 6113) [ClassicSimilarity], result of:
            0.05689864 = score(doc=6113,freq=1.0), product of:
              0.13629217 = queryWeight, product of:
                1.3083894 = boost
                6.6796074 = idf(docFreq=150, maxDocs=44218)
                0.015594914 = queryNorm
              0.41747546 = fieldWeight in 6113, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6796074 = idf(docFreq=150, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.028646484 = weight(abstract_txt:social in 6113) [ClassicSimilarity], result of:
            0.028646484 = score(doc=6113,freq=1.0), product of:
              0.10867439 = queryWeight, product of:
                1.6522667 = boost
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.015594914 = queryNorm
              0.26359922 = fieldWeight in 6113, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2175875 = idf(docFreq=1770, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.077652365 = weight(abstract_txt:citation in 6113) [ClassicSimilarity], result of:
            0.077652365 = score(doc=6113,freq=3.0), product of:
              0.14649037 = queryWeight, product of:
                1.9183202 = boost
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.015594914 = queryNorm
              0.53008515 = fieldWeight in 6113, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.896717 = idf(docFreq=897, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
          0.44263947 = weight(abstract_txt:matrices in 6113) [ClassicSimilarity], result of:
            0.44263947 = score(doc=6113,freq=5.0), product of:
              0.39426637 = queryWeight, product of:
                3.1471064 = boost
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.015594914 = queryNorm
              1.1226914 = fieldWeight in 6113, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.0625 = fieldNorm(doc=6113)
        0.16 = coord(4/25)