-
Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009)
0.06
0.061262563 = product of:
0.122525126 = sum of:
0.122525126 = sum of:
0.07079144 = weight(_text_:v in 2763) [ClassicSimilarity], result of:
0.07079144 = score(doc=2763,freq=2.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.32293302 = fieldWeight in 2763, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=2763)
0.051733684 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
0.051733684 = score(doc=2763,freq=4.0), product of:
0.15758218 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044999957 = queryNorm
0.32829654 = fieldWeight in 2763, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=2763)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:22:35
-
Larivière, V.; Archambault, V.; Gingras, Y.; Vignola-Gagné, E.: ¬The place of serials in referencing practices : comparing natural sciences and engineering with social sciences and humanities (2006)
0.02
0.020857131 = product of:
0.041714262 = sum of:
0.041714262 = product of:
0.083428524 = sum of:
0.083428524 = weight(_text_:v in 5107) [ClassicSimilarity], result of:
0.083428524 = score(doc=5107,freq=4.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.38058025 = fieldWeight in 5107, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=5107)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
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)
0.01
0.014748218 = product of:
0.029496435 = sum of:
0.029496435 = product of:
0.05899287 = sum of:
0.05899287 = weight(_text_:v in 1357) [ClassicSimilarity], result of:
0.05899287 = score(doc=1357,freq=2.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.26911086 = fieldWeight in 1357, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=1357)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Wallace, M.L.; Gingras, Y.; Duhon, R.: ¬A new approach for detecting scientific specialties from raw cocitation networks (2009)
0.01
0.014748218 = product of:
0.029496435 = sum of:
0.029496435 = product of:
0.05899287 = sum of:
0.05899287 = weight(_text_:v in 2709) [ClassicSimilarity], result of:
0.05899287 = score(doc=2709,freq=2.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.26911086 = fieldWeight in 2709, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=2709)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- We use a technique recently developed by V. Blondel, J.-L. Guillaume, R. Lambiotte, and E. Lefebvre (2008) to detect scientific specialties from author cocitation networks. This algorithm has distinct advantages over most previous methods used to obtain cocitation clusters since it avoids the use of similarity measures, relies entirely on the topology of the weighted network, and can be applied to relatively large networks. Most importantly, it requires no subjective interpretation of the cocitation data or of the communities found. Using two examples, we show that the resulting specialties are the smallest coherent groups of researchers (within a hierarchy of cluster sizes) and can thus be identified unambiguously. Furthermore, we confirm that these communities are indeed representative of what we know about the structure of a given scientific discipline and that as specialties, they can be accurately characterized by a few keywords (from the publication titles). We argue that this robust and efficient algorithm is particularly well-suited to cocitation networks and that the results generated can be of great use to researchers studying various facets of the structure and evolution of science.
-
Archambault, E.; Campbell, D; Gingras, Y.; Larivière, V.: Comparing bibliometric statistics obtained from the Web of Science and Scopus (2009)
0.01
0.014748218 = product of:
0.029496435 = sum of:
0.029496435 = product of:
0.05899287 = sum of:
0.05899287 = weight(_text_:v in 2933) [ClassicSimilarity], result of:
0.05899287 = score(doc=2933,freq=2.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.26911086 = fieldWeight in 2933, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=2933)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Larivière, V.; Gingras, Y.: On the relationship between interdisciplinarity and scientific impact (2009)
0.01
0.014748218 = product of:
0.029496435 = sum of:
0.029496435 = product of:
0.05899287 = sum of:
0.05899287 = weight(_text_:v in 3316) [ClassicSimilarity], result of:
0.05899287 = score(doc=3316,freq=2.0), product of:
0.219214 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044999957 = queryNorm
0.26911086 = fieldWeight in 3316, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=3316)
0.5 = coord(1/2)
0.5 = coord(1/2)
