Search (4 results, page 1 of 1)

  • × author_ss:"Pulgarin, A."
  • × theme_ss:"Informetrie"
  1. Pulgarin, A.; Gil-Leiva, I.: Bibliometric analysis of the automatic indexing literature : 1956-2000 (2004) 0.03
    0.03434686 = sum of:
      0.030113291 = product of:
        0.120453164 = sum of:
          0.120453164 = weight(_text_:authors in 2566) [ClassicSimilarity], result of:
            0.120453164 = score(doc=2566,freq=4.0), product of:
              0.24157293 = queryWeight, product of:
                4.558814 = idf(docFreq=1258, maxDocs=44218)
                0.052990302 = 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)
        0.25 = coord(1/4)
      0.004233568 = product of:
        0.008467136 = sum of:
          0.008467136 = weight(_text_:e in 2566) [ClassicSimilarity], result of:
            0.008467136 = score(doc=2566,freq=2.0), product of:
              0.07616667 = queryWeight, product of:
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.052990302 = 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. Alvarez, P.; Pulgarin, A.: ¬The Rasch model : measuring the impact of scientific journals: analytical chemistry (1996) 0.00
    0.0024191819 = product of:
      0.0048383637 = sum of:
        0.0048383637 = product of:
          0.0096767275 = sum of:
            0.0096767275 = weight(_text_:e in 8505) [ClassicSimilarity], result of:
              0.0096767275 = score(doc=8505,freq=2.0), product of:
                0.07616667 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.052990302 = queryNorm
                0.12704675 = fieldWeight in 8505, 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=8505)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  3. Alvarez, P.; Pulgarin, A.: ¬The diffusion of scientific journals analyzed through citations (1997) 0.00
    0.002116784 = product of:
      0.004233568 = sum of:
        0.004233568 = product of:
          0.008467136 = sum of:
            0.008467136 = weight(_text_:e in 1595) [ClassicSimilarity], result of:
              0.008467136 = score(doc=1595,freq=2.0), product of:
                0.07616667 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.052990302 = queryNorm
                0.1111659 = fieldWeight in 1595, 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=1595)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  4. Alvarez, P.; Escalona, I.; Pulgarin, A.: What is wrong with obsolescence? (2000) 0.00
    0.0018143863 = product of:
      0.0036287727 = sum of:
        0.0036287727 = product of:
          0.0072575454 = sum of:
            0.0072575454 = weight(_text_:e in 4858) [ClassicSimilarity], result of:
              0.0072575454 = score(doc=4858,freq=2.0), product of:
                0.07616667 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.052990302 = queryNorm
                0.09528506 = fieldWeight in 4858, 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=4858)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e