-
Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012)
0.01
0.010136919 = product of:
0.020273838 = sum of:
0.020273838 = product of:
0.060821515 = sum of:
0.060821515 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
0.060821515 = score(doc=4992,freq=2.0), product of:
0.15720168 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044891298 = queryNorm
0.38690117 = fieldWeight in 4992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4992)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 14. 2.2012 12:53:22
-
Egghe, L.; Rousseau, R.: ¬The Hirsch index of a shifted Lotka function and its relation with the impact factor (2012)
0.01
0.006884975 = product of:
0.01376995 = sum of:
0.01376995 = product of:
0.04130985 = sum of:
0.04130985 = weight(_text_:c in 243) [ClassicSimilarity], result of:
0.04130985 = score(doc=243,freq=2.0), product of:
0.15484828 = queryWeight, product of:
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.044891298 = queryNorm
0.2667763 = fieldWeight in 243, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.0546875 = fieldNorm(doc=243)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- Based on earlier results about the shifted Lotka function, we prove an implicit functional relation between the Hirsch index (h-index) and the total number of sources (T). It is shown that the corresponding function, h(T), is concavely increasing. Next, we construct an implicit relation between the h-index and the impact factor IF (an average number of items per source). The corresponding function h(IF) is increasing and we show that if the parameter C in the numerator of the shifted Lotka function is high, then the relation between the h-index and the impact factor is almost linear.
-
Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.01
0.006082151 = product of:
0.012164302 = sum of:
0.012164302 = product of:
0.036492907 = sum of:
0.036492907 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.036492907 = score(doc=7659,freq=2.0), product of:
0.15720168 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044891298 = 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)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of information science. 22(1996) no.3, S.165-170
-
Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004)
0.01
0.006082151 = product of:
0.012164302 = sum of:
0.012164302 = product of:
0.036492907 = sum of:
0.036492907 = weight(_text_:22 in 2558) [ClassicSimilarity], result of:
0.036492907 = score(doc=2558,freq=2.0), product of:
0.15720168 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044891298 = queryNorm
0.23214069 = fieldWeight in 2558, 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=2558)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 14. 8.2004 19:17:22
-
Rousseau, R.; Egghe, L.; Guns, R.: Becoming metric-wise : a bibliometric guide for researchers (2018)
0.01
0.0058798613 = product of:
0.011759723 = sum of:
0.011759723 = product of:
0.035279166 = sum of:
0.035279166 = weight(_text_:i in 5226) [ClassicSimilarity], result of:
0.035279166 = score(doc=5226,freq=2.0), product of:
0.16931784 = queryWeight, product of:
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.044891298 = queryNorm
0.20836058 = fieldWeight in 5226, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.7717297 = idf(docFreq=2765, maxDocs=44218)
0.0390625 = fieldNorm(doc=5226)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Footnote
- Rez. in: JASIST 70(2019) no.5, S.530-532 (I. Dorsch)