Search (121 results, page 1 of 7)

  • × theme_ss:"Informetrie"
  1. Craven, T.C.: Determining authorship of Web pages (2006) 0.05 
    0.046261583 = product of:
  0.092523165 = sum of:
    0.092523165 = product of:
      0.18504633 = sum of:
        0.18504633 = weight(_text_:1000 in 1498) [ClassicSimilarity], result of:
          0.18504633 = score(doc=1498,freq=2.0), product of:
            0.34459716 = queryWeight, product of:
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.04963019 = queryNorm
            0.5369932 = fieldWeight in 1498, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1498)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Assignability of authors to Web pages using either normal browsing procedures or browsing assisted by simple automatic extraction was investigated. Candidate strings for 1000 pages were extracted automatically from title elements, meta-tags, and address-like and copyright-like passages; 539 of the pages produced at least one candidate: 310 candidates from titles, 66 from meta-tags, 91 from address-like passages, and 259 from copyright-like passages. An assistant attempted to identify personal authors for 943 pages by examining the pages themselves and related pages; this added 90 pages with authors to the pages from which no candidate strings were extracted. Specific problems are noted and some refinements to the extraction methods are suggested.
  2. Abt, H.A.; Garfield, E.: Is the relationship between numbers of references and paper lengths the same for all sciences? (2002) 0.04 
    0.039652783 = product of:
  0.07930557 = sum of:
    0.07930557 = product of:
      0.15861113 = sum of:
        0.15861113 = weight(_text_:1000 in 5223) [ClassicSimilarity], result of:
          0.15861113 = score(doc=5223,freq=2.0), product of:
            0.34459716 = queryWeight, product of:
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.04963019 = queryNorm
            0.46027988 = fieldWeight in 5223, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.046875 = fieldNorm(doc=5223)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    It has been shown in the physical sciences that a paper's length is related to its number of references in a linear manner. Abt and Garfield here look at the life and social sciences with the thought that if the relation holds the citation counts will provide a measure of relative importance across these disciplines. In the life sciences 200 research papers from 1999-2000 were scanned in each of 10 journals to produce counts of 1000 word normalized pages. In the social sciences an average of 70 research papers in nine journals were scanned for the two-year period. Papers of average length in the various sciences have the same average number of references within plus or minus 17%. A look at the 30 to 60 papers over the two years in 18 review journals indicates twice the references of research papers of the same length.
  3. Janssens, F.; Leta, J.; Glänzel, W.; Moor, B. de: Towards mapping library and information science (2006) 0.04 
    0.039652783 = product of:
  0.07930557 = sum of:
    0.07930557 = product of:
      0.15861113 = sum of:
        0.15861113 = weight(_text_:1000 in 992) [ClassicSimilarity], result of:
          0.15861113 = score(doc=992,freq=2.0), product of:
            0.34459716 = queryWeight, product of:
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.04963019 = queryNorm
            0.46027988 = fieldWeight in 992, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.046875 = fieldNorm(doc=992)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    In an earlier study by the authors, full-text analysis and traditional bibliometric methods were combined to map research papers published in the journal Scientometrics. The main objective was to develop appropriate techniques of full-text analysis and to improve the efficiency of the individual methods in the mapping of science. The number of papers was, however, rather limited. In the present study, we extend the quantitative linguistic part of the previous studies to a set of five journals representing the field of Library and Information Science (LIS). Almost 1000 articles and notes published in the period 2002-2004 have been selected for this exercise. The optimum solution for clustering LIS is found for six clusters. The combination of different mapping techniques, applied to the full text of scientific publications, results in a characteristic tripod pattern. Besides two clusters in bibliometrics, one cluster in information retrieval and one containing general issues, webometrics and patent studies are identified as small but emerging clusters within LIS. The study is concluded with the analysis of cluster representations by the selected journals.
  4. Yoshikane, F.; Kageura, K.; Tsuji, K.: ¬A method for the comparative analysis of concentration of author productivity, giving consideration to the effect of sample size dependency of statistical measures (2003) 0.03 
    0.033043988 = product of:
  0.066087976 = sum of:
    0.066087976 = product of:
      0.13217595 = sum of:
        0.13217595 = weight(_text_:1000 in 5123) [ClassicSimilarity], result of:
          0.13217595 = score(doc=5123,freq=2.0), product of:
            0.34459716 = queryWeight, product of:
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.04963019 = queryNorm
            0.3835666 = fieldWeight in 5123, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.943297 = idf(docFreq=115, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5123)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Studies of the concentration of author productivity based upon counts of papers by individual authors will produce measures that change systematically with sample size. Yoshikane, Kageura, and Tsuji seek a statistical framework which will avoid this scale effect problem. Using the number of authors in a field as an absolute concentration measure, and Gini's index as a relative concentration measure, they describe four literatures form both viewpoints with measures insensitive to one another. Both measures will increase with sample size. They then plot profiles of the two measures on the basis of a Monte-Carlo simulation of 1000 trials for 20 equally spaced intervals and compare the characteristics of the literatures. Using data from conferences hosted by four academic societies between 1992 and 1997, they find a coefficient of loss exceeding 0.15 indicating measures will depend highly on sample size. The simulation shows that a larger sample size leads to lower absolute concentration and higher relative concentration. Comparisons made at the same sample size present quite different results than the original data and allow direct comparison of population characteristics.
  5. Nicholls, P.T.: Empirical validation of Lotka's law (1986) 0.03 
    0.026896823 = product of:
  0.053793646 = sum of:
    0.053793646 = product of:
      0.10758729 = sum of:
        0.10758729 = weight(_text_:22 in 5509) [ClassicSimilarity], result of:
          0.10758729 = score(doc=5509,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.61904186 = fieldWeight in 5509, 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=5509)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Information processing and management. 22(1986), S.417-419
  6. Nicolaisen, J.: Citation analysis (2007) 0.03 
    0.026896823 = product of:
  0.053793646 = sum of:
    0.053793646 = product of:
      0.10758729 = sum of:
        0.10758729 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
          0.10758729 = score(doc=6091,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = 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
  7. Fiala, J.: Information flood : fiction and reality (1987) 0.03 
    0.026896823 = product of:
  0.053793646 = sum of:
    0.053793646 = product of:
      0.10758729 = sum of:
        0.10758729 = weight(_text_:22 in 1080) [ClassicSimilarity], result of:
          0.10758729 = score(doc=1080,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.61904186 = fieldWeight in 1080, 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=1080)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Thermochimica acta. 110(1987), S.11-22
  8. Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998) 0.02 
    0.023773657 = product of:
  0.047547314 = sum of:
    0.047547314 = product of:
      0.09509463 = sum of:
        0.09509463 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
          0.09509463 = score(doc=3690,freq=4.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.54716086 = fieldWeight in 3690, 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=3690)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 5.1999 19:22:35
  9. Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001) 0.02 
    0.023773657 = product of:
  0.047547314 = sum of:
    0.047547314 = product of:
      0.09509463 = sum of:
        0.09509463 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
          0.09509463 = score(doc=3925,freq=4.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = 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
  10. Diodato, V.: Dictionary of bibliometrics (1994) 0.02 
    0.02353472 = product of:
  0.04706944 = sum of:
    0.04706944 = product of:
      0.09413888 = sum of:
        0.09413888 = weight(_text_:22 in 5666) [ClassicSimilarity], result of:
          0.09413888 = score(doc=5666,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.5416616 = fieldWeight in 5666, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=5666)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Rez. in: Journal of library and information science 22(1996) no.2, S.116-117 (L.C. Smith)
  11. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.02 
    0.02353472 = product of:
  0.04706944 = sum of:
    0.04706944 = product of:
      0.09413888 = sum of:
        0.09413888 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
          0.09413888 = score(doc=6902,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.5416616 = fieldWeight in 6902, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=6902)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 18:55:29
  12. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.02 
    0.02353472 = product of:
  0.04706944 = sum of:
    0.04706944 = product of:
      0.09413888 = sum of:
        0.09413888 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
          0.09413888 = score(doc=4689,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.5416616 = fieldWeight in 4689, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=4689)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 18:55:55
  13. Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005) 0.02 
    0.020172616 = product of:
  0.040345233 = sum of:
    0.040345233 = product of:
      0.080690466 = sum of:
        0.080690466 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
          0.080690466 = score(doc=4890,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.46428138 = fieldWeight in 4890, 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=4890)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    20. 1.2007 17:02:22
  14. Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014) 0.02 
    0.020172616 = product of:
  0.040345233 = sum of:
    0.040345233 = product of:
      0.080690466 = sum of:
        0.080690466 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
          0.080690466 = score(doc=1239,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = 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)
  0.5 = coord(1/2)
    Date
    18. 3.2014 19:13:22
  15. Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006) 0.01 
    0.014264195 = product of:
  0.02852839 = sum of:
    0.02852839 = product of:
      0.05705678 = sum of:
        0.05705678 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
          0.05705678 = score(doc=5275,freq=4.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.32829654 = fieldWeight in 5275, 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=5275)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 16:20:22
  16. Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009) 0.01 
    0.014264195 = product of:
  0.02852839 = sum of:
    0.02852839 = product of:
      0.05705678 = sum of:
        0.05705678 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
          0.05705678 = score(doc=2763,freq=4.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = 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
  17. Li, T.-C.: Reference sources in periodicals : research note (1995) 0.01 
    0.013448412 = product of:
  0.026896823 = sum of:
    0.026896823 = product of:
      0.053793646 = sum of:
        0.053793646 = weight(_text_:22 in 5092) [ClassicSimilarity], result of:
          0.053793646 = score(doc=5092,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.30952093 = fieldWeight in 5092, 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=5092)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Presents a list of 53 periodicals in 22 subject fields which regularly provide bibliographies of theses, research in progress and patents in their particular subject field. The fields of business, economics, history and literature have most periodical listings of dissertations and theses. Also lists 63 periodicals in 25 sub-disciplines which provide rankings or ratings. Rankings and ratings information predominates in the fields of business, sports and games, finance and banking, and library and information science
  18. Pichappan, P.; Sangaranachiyar, S.: Ageing approach to scientific eponyms (1996) 0.01 
    0.013448412 = product of:
  0.026896823 = sum of:
    0.026896823 = product of:
      0.053793646 = sum of:
        0.053793646 = weight(_text_:22 in 80) [ClassicSimilarity], result of:
          0.053793646 = score(doc=80,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.30952093 = fieldWeight in 80, 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=80)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Report presented at the 16th National Indian Association of Special Libraries and Information Centres Seminar Special Interest Group Meeting on Informatrics in Bombay, 19-22 Dec 94
  19. Mommoh, O.M.: Subject analysis of post-graduate theses in library, archival and information science at Ahmadu Bello University, Zaria (1995/96) 0.01 
    0.013448412 = product of:
  0.026896823 = sum of:
    0.026896823 = product of:
      0.053793646 = sum of:
        0.053793646 = weight(_text_:22 in 673) [ClassicSimilarity], result of:
          0.053793646 = score(doc=673,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.30952093 = fieldWeight in 673, 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=673)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Library focus. 13/14(1995/96), S.22-25
  20. Chongde, W.; Zhe, W.: Evaluation of the models for Bradford's law (1998) 0.01 
    0.013448412 = product of:
  0.026896823 = sum of:
    0.026896823 = product of:
      0.053793646 = sum of:
        0.053793646 = weight(_text_:22 in 3688) [ClassicSimilarity], result of:
          0.053793646 = score(doc=3688,freq=2.0), product of:
            0.17379647 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04963019 = queryNorm
            0.30952093 = fieldWeight in 3688, 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=3688)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 5.1999 19:12:28

Authors

Years

Languages

  • e 112
  • d 8
  • ro 1
  • More… Less…

Types

  • a 119
  • m 2
  • el 1
  • s 1
  • More… Less…

Themes

Subjects

Classifications