Search (3 results, page 1 of 1)

  • × author_ss:"Gil-Leiva, I."
  • × theme_ss:"Automatisches Indexieren"
  1. Pulgarin, A.; Gil-Leiva, I.: Bibliometric analysis of the automatic indexing literature : 1956-2000 (2004) 0.01
    0.014158833 = sum of:
      0.011051434 = product of:
        0.08841147 = sum of:
          0.08841147 = weight(_text_:authors in 2566) [ClassicSimilarity], result of:
            0.08841147 = score(doc=2566,freq=4.0), product of:
              0.17731223 = queryWeight, product of:
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.038894374 = 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)
      0.0031073985 = product of:
        0.006214797 = sum of:
          0.006214797 = weight(_text_:e in 2566) [ClassicSimilarity], result of:
            0.006214797 = score(doc=2566,freq=2.0), product of:
              0.055905603 = queryWeight, product of:
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.038894374 = 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. Souza, R.R.; Gil-Leiva, I.: Automatic indexing of scientific texts : a methodological comparison (2016) 0.00
    0.0017756562 = product of:
      0.0035513125 = sum of:
        0.0035513125 = product of:
          0.007102625 = sum of:
            0.007102625 = weight(_text_:e in 4913) [ClassicSimilarity], result of:
              0.007102625 = score(doc=4913,freq=2.0), product of:
                0.055905603 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.038894374 = queryNorm
                0.12704675 = fieldWeight in 4913, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0625 = fieldNorm(doc=4913)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  3. Gil-Leiva, I.: SISA-automatic indexing system for scientific articles : experiments with location heuristics rules versus TF-IDF rules (2017) 0.00
    0.0013317422 = product of:
      0.0026634843 = sum of:
        0.0026634843 = product of:
          0.0053269686 = sum of:
            0.0053269686 = weight(_text_:e in 3622) [ClassicSimilarity], result of:
              0.0053269686 = score(doc=3622,freq=2.0), product of:
                0.055905603 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.038894374 = queryNorm
                0.09528506 = fieldWeight in 3622, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3622)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e