Search (3 results, page 1 of 1)

  • × theme_ss:"Automatisches Indexieren"
  • × theme_ss:"Informetrie"
  1. Pulgarin, A.; Gil-Leiva, I.: Bibliometric analysis of the automatic indexing literature : 1956-2000 (2004) 0.01
    0.013601301 = sum of:
      0.010616262 = product of:
        0.0849301 = sum of:
          0.0849301 = weight(_text_:authors in 2566) [ClassicSimilarity], result of:
            0.0849301 = score(doc=2566,freq=4.0), product of:
              0.17033021 = queryWeight, product of:
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.037362833 = queryNorm
              0.49862027 = fieldWeight in 2566, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2566)
        0.125 = coord(1/8)
      0.0029850388 = product of:
        0.0059700776 = sum of:
          0.0059700776 = weight(_text_:e in 2566) [ClassicSimilarity], result of:
            0.0059700776 = score(doc=2566,freq=2.0), product of:
              0.053704213 = queryWeight, product of:
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.037362833 = queryNorm
              0.1111659 = fieldWeight in 2566, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2566)
        0.5 = coord(1/2)
    
    Abstract
    We present a bibliometric study of a corpus of 839 bibliographic references about automatic indexing, covering the period 1956-2000. We analyse the distribution of authors and works, the obsolescence and its dispersion, and the distribution of the literature by topic, year, and source type. We conclude that: (i) there has been a constant interest on the part of researchers; (ii) the most studied topics were the techniques and methods employed and the general aspects of automatic indexing; (iii) the productivity of the authors does fit a Lotka distribution (Dmax=0.02 and critical value=0.054); (iv) the annual aging factor is 95%; and (v) the dispersion of the literature is low.
    Language
    e
  2. Gomez, I.: Coping with the problem of subject classification diversity (1996) 0.00
    0.0014925194 = product of:
      0.0029850388 = sum of:
        0.0029850388 = product of:
          0.0059700776 = sum of:
            0.0059700776 = weight(_text_:e in 5074) [ClassicSimilarity], result of:
              0.0059700776 = score(doc=5074,freq=2.0), product of:
                0.053704213 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.037362833 = queryNorm
                0.1111659 = fieldWeight in 5074, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5074)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  3. Tavakolizadeh-Ravari, M.: Analysis of the long term dynamics in thesaurus developments and its consequences (2017) 0.00
    8.528682E-4 = product of:
      0.0017057364 = sum of:
        0.0017057364 = product of:
          0.0034114728 = sum of:
            0.0034114728 = weight(_text_:e in 3081) [ClassicSimilarity], result of:
              0.0034114728 = score(doc=3081,freq=2.0), product of:
                0.053704213 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.037362833 = queryNorm
                0.063523374 = fieldWeight in 3081, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.03125 = fieldNorm(doc=3081)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e