-
Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.02
0.020206546 = product of:
0.030309819 = sum of:
0.011945928 = weight(_text_:a in 7659) [ClassicSimilarity], result of:
0.011945928 = score(doc=7659,freq=18.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.22931081 = fieldWeight in 7659, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=7659)
0.01836389 = product of:
0.03672778 = sum of:
0.03672778 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.03672778 = score(doc=7659,freq=2.0), product of:
0.15821345 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045180224 = 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)
0.6666667 = coord(2/3)
- 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
- Type
- a
-
Rousseau, R.: ¬A table for estimating the exponent in Lotka's law (1993)
0.01
0.0050056577 = product of:
0.015016973 = sum of:
0.015016973 = weight(_text_:a in 5653) [ClassicSimilarity], result of:
0.015016973 = score(doc=5653,freq=4.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.28826174 = fieldWeight in 5653, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=5653)
0.33333334 = coord(1/3)
- Type
- a
-
Egghe, L.; Rousseau, R.: Duality in information retrieval and the hypegeometric distribution (1997)
0.00
0.0017697671 = product of:
0.0053093014 = sum of:
0.0053093014 = weight(_text_:a in 647) [ClassicSimilarity], result of:
0.0053093014 = score(doc=647,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.10191591 = fieldWeight in 647, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=647)
0.33333334 = coord(1/3)
- Type
- a