Document (#21691)

Author
Su, Y.
Han, L.-F.
Title
¬A new literature growth model : variable exponential growth law of literature
Source
Scientometrics. 42(1998) no.2, S.259-265
Year
1998
Abstract
Derives a 'literature variable exponential growth model' from Price's literature growth model. The research shows that the new model is more convincing than the former ones. Gives detailed calculation procedure, examples, parameter values and mean square errors
Theme
Informetrie

Similar documents (content)

  1. Winter, C.E.: Quantitative analysis of indexed publications on seventeen model organisms in nine countries, from 1974 to 2006 (2008) 0.24
    0.23829947 = sum of:
      0.23829947 = product of:
        0.85106957 = sum of:
          0.005223831 = weight(abstract_txt:from in 3003) [ClassicSimilarity], result of:
            0.005223831 = score(doc=3003,freq=1.0), product of:
              0.02423174 = queryWeight, product of:
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.008781528 = queryNorm
              0.21557805 = fieldWeight in 3003, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.0078421375 = weight(abstract_txt:research in 3003) [ClassicSimilarity], result of:
            0.0078421375 = score(doc=3003,freq=1.0), product of:
              0.031769823 = queryWeight, product of:
                1.1450254 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.008781528 = queryNorm
              0.24684234 = fieldWeight in 3003, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.046760034 = weight(abstract_txt:shows in 3003) [ClassicSimilarity], result of:
            0.046760034 = score(doc=3003,freq=2.0), product of:
              0.08291474 = queryWeight, product of:
                1.8497949 = boost
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.008781528 = queryNorm
              0.5639532 = fieldWeight in 3003, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.09252546 = weight(abstract_txt:mean in 3003) [ClassicSimilarity], result of:
            0.09252546 = score(doc=3003,freq=2.0), product of:
              0.13068408 = queryWeight, product of:
                2.3223038 = boost
                6.4081626 = idf(docFreq=198, maxDocs=44421)
                0.008781528 = queryNorm
              0.70800865 = fieldWeight in 3003, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.4081626 = idf(docFreq=198, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.23501474 = weight(abstract_txt:exponential in 3003) [ClassicSimilarity], result of:
            0.23501474 = score(doc=3003,freq=1.0), product of:
              0.38618782 = queryWeight, product of:
                5.6457543 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.008781528 = queryNorm
              0.60855037 = fieldWeight in 3003, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.15390082 = weight(abstract_txt:model in 3003) [ClassicSimilarity], result of:
            0.15390082 = score(doc=3003,freq=6.0), product of:
              0.20192437 = queryWeight, product of:
                5.7734056 = boost
                3.9827821 = idf(docFreq=2249, maxDocs=44421)
                0.008781528 = queryNorm
              0.7621706 = fieldWeight in 3003, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.9827821 = idf(docFreq=2249, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
          0.30980256 = weight(abstract_txt:growth in 3003) [ClassicSimilarity], result of:
            0.30980256 = score(doc=3003,freq=3.0), product of:
              0.40559703 = queryWeight, product of:
                8.182483 = boost
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.008781528 = queryNorm
              0.7638186 = fieldWeight in 3003, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.078125 = fieldNorm(doc=3003)
        0.28 = coord(7/25)
    
  2. Gupta, B.M.; Sharma, P.; Karisiddappa, C.R.: Growth of research literature in scientific specialities : a modelling perspective (1997) 0.18
    0.18464878 = sum of:
      0.18464878 = product of:
        0.9232439 = sum of:
          0.068162225 = weight(abstract_txt:values in 2040) [ClassicSimilarity], result of:
            0.068162225 = score(doc=2040,freq=1.0), product of:
              0.10731712 = queryWeight, product of:
                2.1044674 = boost
                5.807065 = idf(docFreq=362, maxDocs=44421)
                0.008781528 = queryNorm
              0.63514775 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.807065 = idf(docFreq=362, maxDocs=44421)
                0.109375 = fieldNorm(doc=2040)
          0.151254 = weight(abstract_txt:parameter in 2040) [ClassicSimilarity], result of:
            0.151254 = score(doc=2040,freq=1.0), product of:
              0.1825763 = queryWeight, product of:
                2.7449214 = boost
                7.574333 = idf(docFreq=61, maxDocs=44421)
                0.008781528 = queryNorm
              0.8284427 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.574333 = idf(docFreq=61, maxDocs=44421)
                0.109375 = fieldNorm(doc=2040)
          0.32902062 = weight(abstract_txt:exponential in 2040) [ClassicSimilarity], result of:
            0.32902062 = score(doc=2040,freq=1.0), product of:
              0.38618782 = queryWeight, product of:
                5.6457543 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.008781528 = queryNorm
              0.8519705 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.109375 = fieldNorm(doc=2040)
          0.124396555 = weight(abstract_txt:model in 2040) [ClassicSimilarity], result of:
            0.124396555 = score(doc=2040,freq=2.0), product of:
              0.20192437 = queryWeight, product of:
                5.7734056 = boost
                3.9827821 = idf(docFreq=2249, maxDocs=44421)
                0.008781528 = queryNorm
              0.6160552 = fieldWeight in 2040, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9827821 = idf(docFreq=2249, maxDocs=44421)
                0.109375 = fieldNorm(doc=2040)
          0.25041044 = weight(abstract_txt:growth in 2040) [ClassicSimilarity], result of:
            0.25041044 = score(doc=2040,freq=1.0), product of:
              0.40559703 = queryWeight, product of:
                8.182483 = boost
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.008781528 = queryNorm
              0.61738724 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.109375 = fieldNorm(doc=2040)
        0.2 = coord(5/25)
    
  3. Larivière, V.; Sugimoto, C.R.; Cronin, B.: ¬A bibliometric chronicling of library and information science's first hundred years (2012) 0.14
    0.13730162 = sum of:
      0.13730162 = product of:
        0.42906758 = sum of:
          0.009344673 = weight(abstract_txt:from in 1244) [ClassicSimilarity], result of:
            0.009344673 = score(doc=1244,freq=5.0), product of:
              0.02423174 = queryWeight, product of:
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.008781528 = queryNorm
              0.38563773 = fieldWeight in 1244, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.0062737097 = weight(abstract_txt:research in 1244) [ClassicSimilarity], result of:
            0.0062737097 = score(doc=1244,freq=1.0), product of:
              0.031769823 = queryWeight, product of:
                1.1450254 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.008781528 = queryNorm
              0.19747387 = fieldWeight in 1244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.013495463 = weight(abstract_txt:more in 1244) [ClassicSimilarity], result of:
            0.013495463 = score(doc=1244,freq=3.0), product of:
              0.036707092 = queryWeight, product of:
                1.2307864 = boost
                3.3962307 = idf(docFreq=4044, maxDocs=44421)
                0.008781528 = queryNorm
              0.36765274 = fieldWeight in 1244, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3962307 = idf(docFreq=4044, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.016592668 = weight(abstract_txt:than in 1244) [ClassicSimilarity], result of:
            0.016592668 = score(doc=1244,freq=2.0), product of:
              0.048224308 = queryWeight, product of:
                1.4107196 = boost
                3.8927383 = idf(docFreq=2461, maxDocs=44421)
                0.008781528 = queryNorm
              0.3440727 = fieldWeight in 1244, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.8927383 = idf(docFreq=2461, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.02645147 = weight(abstract_txt:shows in 1244) [ClassicSimilarity], result of:
            0.02645147 = score(doc=1244,freq=1.0), product of:
              0.08291474 = queryWeight, product of:
                1.8497949 = boost
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.008781528 = queryNorm
              0.31902012 = fieldWeight in 1244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.14590564 = weight(abstract_txt:variable in 1244) [ClassicSimilarity], result of:
            0.14590564 = score(doc=1244,freq=1.0), product of:
              0.32612938 = queryWeight, product of:
                5.1882114 = boost
                7.1581726 = idf(docFreq=93, maxDocs=44421)
                0.008781528 = queryNorm
              0.4473858 = fieldWeight in 1244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1581726 = idf(docFreq=93, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.06791227 = weight(abstract_txt:literature in 1244) [ClassicSimilarity], result of:
            0.06791227 = score(doc=1244,freq=1.0), product of:
              0.24678421 = queryWeight, product of:
                6.3825817 = boost
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.008781528 = queryNorm
              0.2751889 = fieldWeight in 1244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
          0.14309168 = weight(abstract_txt:growth in 1244) [ClassicSimilarity], result of:
            0.14309168 = score(doc=1244,freq=1.0), product of:
              0.40559703 = queryWeight, product of:
                8.182483 = boost
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.008781528 = queryNorm
              0.3527927 = fieldWeight in 1244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.0625 = fieldNorm(doc=1244)
        0.32 = coord(8/25)
    
  4. Larivière, V.; Archambault, E.; Gingras, Y.: Long-term variations in the aging of scientific literature : from exponential growth to steady-state science (1900-2004) (2008) 0.13
    0.13042313 = sum of:
      0.13042313 = product of:
        0.54342973 = sum of:
          0.0077916095 = weight(abstract_txt:more in 2357) [ClassicSimilarity], result of:
            0.0077916095 = score(doc=2357,freq=1.0), product of:
              0.036707092 = queryWeight, product of:
                1.2307864 = boost
                3.3962307 = idf(docFreq=4044, maxDocs=44421)
                0.008781528 = queryNorm
              0.21226442 = fieldWeight in 2357, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3962307 = idf(docFreq=4044, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
          0.011732788 = weight(abstract_txt:than in 2357) [ClassicSimilarity], result of:
            0.011732788 = score(doc=2357,freq=1.0), product of:
              0.048224308 = queryWeight, product of:
                1.4107196 = boost
                3.8927383 = idf(docFreq=2461, maxDocs=44421)
                0.008781528 = queryNorm
              0.24329615 = fieldWeight in 2357, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8927383 = idf(docFreq=2461, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
          0.02645147 = weight(abstract_txt:shows in 2357) [ClassicSimilarity], result of:
            0.02645147 = score(doc=2357,freq=1.0), product of:
              0.08291474 = queryWeight, product of:
                1.8497949 = boost
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.008781528 = queryNorm
              0.31902012 = fieldWeight in 2357, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
          0.18801178 = weight(abstract_txt:exponential in 2357) [ClassicSimilarity], result of:
            0.18801178 = score(doc=2357,freq=1.0), product of:
              0.38618782 = queryWeight, product of:
                5.6457543 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.008781528 = queryNorm
              0.48684028 = fieldWeight in 2357, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
          0.16635042 = weight(abstract_txt:literature in 2357) [ClassicSimilarity], result of:
            0.16635042 = score(doc=2357,freq=6.0), product of:
              0.24678421 = queryWeight, product of:
                6.3825817 = boost
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.008781528 = queryNorm
              0.6740724 = fieldWeight in 2357, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.4030223 = idf(docFreq=1477, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
          0.14309168 = weight(abstract_txt:growth in 2357) [ClassicSimilarity], result of:
            0.14309168 = score(doc=2357,freq=1.0), product of:
              0.40559703 = queryWeight, product of:
                8.182483 = boost
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.008781528 = queryNorm
              0.3527927 = fieldWeight in 2357, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.0625 = fieldNorm(doc=2357)
        0.24 = coord(6/25)
    
  5. Henderson, A.: Information science and information policy : the use of constant dollars and other indicators to manage research investments (1999) 0.13
    0.12500142 = sum of:
      0.12500142 = product of:
        0.7812589 = sum of:
          0.01882113 = weight(abstract_txt:research in 4459) [ClassicSimilarity], result of:
            0.01882113 = score(doc=4459,freq=4.0), product of:
              0.031769823 = queryWeight, product of:
                1.1450254 = boost
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.008781528 = queryNorm
              0.5924216 = fieldWeight in 4459, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.159582 = idf(docFreq=5124, maxDocs=44421)
                0.09375 = fieldNorm(doc=4459)
          0.26578256 = weight(abstract_txt:price's in 4459) [ClassicSimilarity], result of:
            0.26578256 = score(doc=4459,freq=1.0), product of:
              0.29463795 = queryWeight, product of:
                3.487001 = boost
                9.622026 = idf(docFreq=7, maxDocs=44421)
                0.008781528 = queryNorm
              0.902065 = fieldWeight in 4459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.622026 = idf(docFreq=7, maxDocs=44421)
                0.09375 = fieldNorm(doc=4459)
          0.28201768 = weight(abstract_txt:exponential in 4459) [ClassicSimilarity], result of:
            0.28201768 = score(doc=4459,freq=1.0), product of:
              0.38618782 = queryWeight, product of:
                5.6457543 = boost
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.008781528 = queryNorm
              0.73026043 = fieldWeight in 4459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7894444 = idf(docFreq=49, maxDocs=44421)
                0.09375 = fieldNorm(doc=4459)
          0.2146375 = weight(abstract_txt:growth in 4459) [ClassicSimilarity], result of:
            0.2146375 = score(doc=4459,freq=1.0), product of:
              0.40559703 = queryWeight, product of:
                8.182483 = boost
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.008781528 = queryNorm
              0.52918905 = fieldWeight in 4459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6446834 = idf(docFreq=426, maxDocs=44421)
                0.09375 = fieldNorm(doc=4459)
        0.16 = coord(4/25)