Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.02
0.023157682 = product of:
0.09263073 = sum of:
0.075659566 = weight(_text_:case in 7659) [ClassicSimilarity], result of:
0.075659566 = score(doc=7659,freq=4.0), product of:
0.18356672 = queryWeight, product of:
4.3964143 = idf(docFreq=1480, maxDocs=44218)
0.041753735 = queryNorm
0.41216385 = fieldWeight in 7659, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.3964143 = idf(docFreq=1480, maxDocs=44218)
0.046875 = fieldNorm(doc=7659)
0.016971163 = product of:
0.033942327 = sum of:
0.033942327 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.033942327 = score(doc=7659,freq=2.0), product of:
0.14621447 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041753735 = queryNorm
0.23214069 = fieldWeight in 7659, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=7659)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- It is possible, using ISI's Journal Citation Report (JCR), to calculate average impact factors (AIF) for LCR's subject categories but it can be more useful to know the global Impact Factor (GIF) of a subject category and compare the 2 values. Reports results of a study to compare the relationships between AIFs and GIFs of subjects, based on the particular case of the average impact factor of a subfield versus the impact factor of this subfield as a whole, the difference being studied between an average of quotients, denoted as AQ, and a global average, obtained as a quotient of averages, and denoted as GQ. In the case of impact factors, AQ becomes the average impact factor of a field, and GQ becomes its global impact factor. Discusses a number of applications of this technique in the context of informetrics and scientometrics
- Source
- Journal of information science. 22(1996) no.3, S.165-170