-
Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007)
0.10
0.1012257 = product of:
0.2024514 = sum of:
0.2024514 = sum of:
0.024412844 = weight(_text_:h in 1144) [ClassicSimilarity], result of:
0.024412844 = score(doc=1144,freq=2.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.21959636 = fieldWeight in 1144, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=1144)
0.12953784 = weight(_text_:y in 1144) [ClassicSimilarity], result of:
0.12953784 = score(doc=1144,freq=4.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.60155004 = fieldWeight in 1144, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0625 = fieldNorm(doc=1144)
0.04850072 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
0.04850072 = score(doc=1144,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.30952093 = fieldWeight in 1144, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=1144)
0.5 = coord(1/2)
- Date
- 30.12.2007 11:22:39
- Source
- ¬La interdisciplinariedad y la transdisciplinariedad en la organización del conocimiento científico : actas del VIII Congreso ISKO-España, León, 18, 19 y 20 de Abril de 2007 : Interdisciplinarity and transdisciplinarity in the organization of scientific knowledge. Ed.: B. Rodriguez Bravo u. M.L Alvite Diez
-
Su, Y.; Han, L.-F.: ¬A new literature growth model : variable exponential growth law of literature (1998)
0.07
0.066744775 = product of:
0.13348955 = sum of:
0.13348955 = product of:
0.20023432 = sum of:
0.11449636 = weight(_text_:y in 3690) [ClassicSimilarity], result of:
0.11449636 = score(doc=3690,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.53170013 = fieldWeight in 3690, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.078125 = fieldNorm(doc=3690)
0.08573797 = weight(_text_:22 in 3690) [ClassicSimilarity], result of:
0.08573797 = score(doc=3690,freq=4.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.54716086 = fieldWeight in 3690, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3690)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 5.1999 19:22:35
-
Meho, L.I.; Rogers, Y.: Citation counting, citation ranking, and h-index of human-computer interaction researchers : a comparison of Scopus and Web of Science (2008)
0.06
0.062467754 = product of:
0.12493551 = sum of:
0.12493551 = sum of:
0.03737438 = weight(_text_:h in 2352) [ClassicSimilarity], result of:
0.03737438 = score(doc=2352,freq=12.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.3361869 = fieldWeight in 2352, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=2352)
0.05724818 = weight(_text_:y in 2352) [ClassicSimilarity], result of:
0.05724818 = score(doc=2352,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.26585007 = fieldWeight in 2352, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=2352)
0.030312952 = weight(_text_:22 in 2352) [ClassicSimilarity], result of:
0.030312952 = score(doc=2352,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.19345059 = fieldWeight in 2352, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2352)
0.5 = coord(1/2)
- Abstract
- This study examines the differences between Scopus and Web of Science in the citation counting, citation ranking, and h-index of 22 top human-computer interaction (HCI) researchers from EQUATOR - a large British Interdisciplinary Research Collaboration project. Results indicate that Scopus provides significantly more coverage of HCI literature than Web of Science, primarily due to coverage of relevant ACM and IEEE peer-reviewed conference proceedings. No significant differences exist between the two databases if citations in journals only are compared. Although broader coverage of the literature does not significantly alter the relative citation ranking of individual researchers, Scopus helps distinguish between the researchers in a more nuanced fashion than Web of Science in both citation counting and h-index. Scopus also generates significantly different maps of citation networks of individual scholars than those generated by Web of Science. The study also presents a comparison of h-index scores based on Google Scholar with those based on the union of Scopus and Web of Science. The study concludes that Scopus can be used as a sole data source for citation-based research and evaluation in HCI, especially when citations in conference proceedings are sought, and that researchers should manually calculate h scores instead of relying on system calculations.
- Object
- h-index
-
Chang, Y.-W.; Huang, M.-H.: ¬A study of the evolution of interdisciplinarity in library and information science : using three bibliometric methods (2012)
0.05
0.05140958 = product of:
0.10281916 = sum of:
0.10281916 = sum of:
0.015258028 = weight(_text_:h in 4959) [ClassicSimilarity], result of:
0.015258028 = score(doc=4959,freq=2.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.13724773 = fieldWeight in 4959, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=4959)
0.05724818 = weight(_text_:y in 4959) [ClassicSimilarity], result of:
0.05724818 = score(doc=4959,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.26585007 = fieldWeight in 4959, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=4959)
0.030312952 = weight(_text_:22 in 4959) [ClassicSimilarity], result of:
0.030312952 = score(doc=4959,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.19345059 = fieldWeight in 4959, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=4959)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.1, S.22-33
-
Ye, F.Y.; Leydesdorff, L.: ¬The "academic trace" of the performance matrix : a mathematical synthesis of the h-index and the integrated impact indicator (I3) (2014)
0.04
0.042245083 = product of:
0.084490165 = sum of:
0.084490165 = product of:
0.12673524 = sum of:
0.045774084 = weight(_text_:h in 1237) [ClassicSimilarity], result of:
0.045774084 = score(doc=1237,freq=18.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.41174316 = fieldWeight in 1237, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=1237)
0.08096115 = weight(_text_:y in 1237) [ClassicSimilarity], result of:
0.08096115 = score(doc=1237,freq=4.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.37596878 = fieldWeight in 1237, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=1237)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- The h-index provides us with 9 natural classes which can be written as a matrix of 3 vectors. The 3 vectors are: X = (X1, X2, X3) and indicates publication distribution in the h-core, the h-tail, and the uncited ones, respectively; Y = (Y1, Y2, Y3) denotes the citation distribution of the h-core, the h-tail and the so-called "excess" citations (above the h-threshold), respectively; and Z = (Z1, Z2, Z3) = (Y1-X1, Y2-X2, Y3-X3). The matrix V = (X,Y,Z)T constructs a measure of academic performance, in which the 9 numbers can all be provided with meanings in different dimensions. The "academic trace" tr(V) of this matrix follows naturally, and contributes a unique indicator for total academic achievements by summarizing and weighting the accumulation of publications and citations. This measure can also be used to combine the advantages of the h-index and the integrated impact indicator (I3) into a single number with a meaningful interpretation of the values. We illustrate the use of tr(V) for the cases of 2 journal sets, 2 universities, and ourselves as 2 individual authors.
- Object
- h-index
-
Ding, Y.: Applying weighted PageRank to author citation networks (2011)
0.04
0.04086186 = product of:
0.08172372 = sum of:
0.08172372 = product of:
0.12258558 = sum of:
0.080147445 = weight(_text_:y in 4188) [ClassicSimilarity], result of:
0.080147445 = score(doc=4188,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3721901 = fieldWeight in 4188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0546875 = fieldNorm(doc=4188)
0.04243813 = weight(_text_:22 in 4188) [ClassicSimilarity], result of:
0.04243813 = score(doc=4188,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.2708308 = fieldWeight in 4188, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4188)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 1.2011 13:02:21
-
Bu, Y.; Ding, Y.; Xu, J.; Liang, X.; Gao, G.; Zhao, Y.: Understanding success through the diversity of collaborators and the milestone of career (2018)
0.04
0.04024496 = product of:
0.08048992 = sum of:
0.08048992 = product of:
0.12073487 = sum of:
0.02157811 = weight(_text_:h in 4012) [ClassicSimilarity], result of:
0.02157811 = score(doc=4012,freq=4.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.1940976 = fieldWeight in 4012, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=4012)
0.09915676 = weight(_text_:y in 4012) [ClassicSimilarity], result of:
0.09915676 = score(doc=4012,freq=6.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.46046585 = fieldWeight in 4012, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=4012)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- Scientific collaboration is vital to many fields, and it is common to see scholars seek out experienced researchers or experts in a domain with whom they can share knowledge, experience, and resources. To explore the diversity of research collaborations, this article performs a temporal analysis on the scientific careers of researchers in the field of computer science. Specifically, we analyze collaborators using 2 indicators: the research topic diversity, measured by the Author-Conference-Topic model and cosine, and the impact diversity, measured by the normalized standard deviation of h-indices. We find that the collaborators of high-impact researchers tend to study diverse research topics and have diverse h-indices. Moreover, by setting PhD graduation as an important milestone in researchers' careers, we examine several indicators related to scientific collaboration and their effects on a career. The results show that collaborating with authoritative authors plays an important role prior to a researcher's PhD graduation, but working with non-authoritative authors carries more weight after PhD graduation.
-
Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009)
0.04
0.04004687 = product of:
0.08009374 = sum of:
0.08009374 = product of:
0.120140605 = sum of:
0.06869782 = weight(_text_:y in 2763) [ClassicSimilarity], result of:
0.06869782 = score(doc=2763,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 2763, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=2763)
0.051442787 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
0.051442787 = score(doc=2763,freq=4.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = 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)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:22:35
-
Yan, E.; Ding, Y.: Discovering author impact : a PageRank perspective (2011)
0.04
0.03866998 = product of:
0.07733996 = sum of:
0.07733996 = product of:
0.116009936 = sum of:
0.024412844 = weight(_text_:h in 2704) [ClassicSimilarity], result of:
0.024412844 = score(doc=2704,freq=2.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.21959636 = fieldWeight in 2704, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0625 = fieldNorm(doc=2704)
0.09159709 = weight(_text_:y in 2704) [ClassicSimilarity], result of:
0.09159709 = score(doc=2704,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.4253601 = fieldWeight in 2704, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0625 = fieldNorm(doc=2704)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- This article provides an alternative perspective for measuring author impact by applying PageRank algorithm to a coauthorship network. A weighted PageRank algorithm considering citation and coauthorship network topology is proposed. We test this algorithm under different damping factors by evaluating author impact in the informetrics research community. In addition, we also compare this weighted PageRank with the h-index, citation, and program committee (PC) membership of the International Society for Scientometrics and Informetrics (ISSI) conferences. Findings show that this weighted PageRank algorithm provides reliable results in measuring author impact.
-
Shibata, N.; Kajikawa, Y.; Takeda, Y.; Matsushima, K.: Comparative study on methods of detecting research fronts using different types of citation (2009)
0.04
0.03709137 = product of:
0.07418274 = sum of:
0.07418274 = product of:
0.11127411 = sum of:
0.08096115 = weight(_text_:y in 2743) [ClassicSimilarity], result of:
0.08096115 = score(doc=2743,freq=4.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.37596878 = fieldWeight in 2743, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=2743)
0.030312952 = weight(_text_:22 in 2743) [ClassicSimilarity], result of:
0.030312952 = score(doc=2743,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.19345059 = fieldWeight in 2743, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2743)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 17:52:50
-
Wang, S.; Ma, Y.; Mao, J.; Bai, Y.; Liang, Z.; Li, G.: Quantifying scientific breakthroughs by a novel disruption indicator based on knowledge entities : On the rise of scrape-and-report scholarship in online reviews research (2023)
0.04
0.03709137 = product of:
0.07418274 = sum of:
0.07418274 = product of:
0.11127411 = sum of:
0.08096115 = weight(_text_:y in 882) [ClassicSimilarity], result of:
0.08096115 = score(doc=882,freq=4.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.37596878 = fieldWeight in 882, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=882)
0.030312952 = weight(_text_:22 in 882) [ClassicSimilarity], result of:
0.030312952 = score(doc=882,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.19345059 = fieldWeight in 882, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=882)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 1.2023 18:37:33
-
Fassin, Y.: ¬A new qualitative rating system for scientific publications and a fame index for academics (2018)
0.04
0.036785603 = product of:
0.073571205 = sum of:
0.073571205 = product of:
0.1103568 = sum of:
0.030209353 = weight(_text_:h in 4571) [ClassicSimilarity], result of:
0.030209353 = score(doc=4571,freq=4.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.27173662 = fieldWeight in 4571, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0546875 = fieldNorm(doc=4571)
0.080147445 = weight(_text_:y in 4571) [ClassicSimilarity], result of:
0.080147445 = score(doc=4571,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3721901 = fieldWeight in 4571, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0546875 = fieldNorm(doc=4571)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- An innovative approach is proposed for a rating system for academic publications based on a categorization into ratings comparable to financial ratings such as Moody's and S&P ratings (AAA, AA, A, BA, BBB, BB, B, C). The categorization makes use of a variable percentile approach based on recently developed h-related indices. Building on this categorization, a new index is proposed for researchers, the fame-index or f2-index. This new index integrates some qualitative elements related to the influence of a researcher's articles. It better mitigates than the classic h-index.
-
Tonta, Y.: Scholarly communication and the use of networked information sources (1996)
0.04
0.035024457 = product of:
0.07004891 = sum of:
0.07004891 = product of:
0.10507336 = sum of:
0.06869782 = weight(_text_:y in 6389) [ClassicSimilarity], result of:
0.06869782 = score(doc=6389,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 6389, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=6389)
0.03637554 = weight(_text_:22 in 6389) [ClassicSimilarity], result of:
0.03637554 = score(doc=6389,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.23214069 = fieldWeight in 6389, 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=6389)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- IFLA journal. 22(1996) no.3, S.240-245
-
Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006)
0.04
0.035024457 = product of:
0.07004891 = sum of:
0.07004891 = product of:
0.10507336 = sum of:
0.06869782 = weight(_text_:y in 5270) [ClassicSimilarity], result of:
0.06869782 = score(doc=5270,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 5270, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=5270)
0.03637554 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
0.03637554 = score(doc=5270,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.23214069 = fieldWeight in 5270, 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=5270)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:26:24
-
Zhang, Y.; Jansen, B.J.; Spink, A.: Identification of factors predicting clickthrough in Web searching using neural network analysis (2009)
0.04
0.035024457 = product of:
0.07004891 = sum of:
0.07004891 = product of:
0.10507336 = sum of:
0.06869782 = weight(_text_:y in 2742) [ClassicSimilarity], result of:
0.06869782 = score(doc=2742,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 2742, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=2742)
0.03637554 = weight(_text_:22 in 2742) [ClassicSimilarity], result of:
0.03637554 = score(doc=2742,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.23214069 = fieldWeight in 2742, 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=2742)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 17:49:11
-
Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009)
0.04
0.035024457 = product of:
0.07004891 = sum of:
0.07004891 = product of:
0.10507336 = sum of:
0.06869782 = weight(_text_:y in 2761) [ClassicSimilarity], result of:
0.06869782 = score(doc=2761,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 2761, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=2761)
0.03637554 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
0.03637554 = score(doc=2761,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.23214069 = fieldWeight in 2761, 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=2761)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:07:20
-
Milard, B.; Pitarch, Y.: Egocentric cocitation networks and scientific papers destinies (2023)
0.04
0.035024457 = product of:
0.07004891 = sum of:
0.07004891 = product of:
0.10507336 = sum of:
0.06869782 = weight(_text_:y in 918) [ClassicSimilarity], result of:
0.06869782 = score(doc=918,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3190201 = fieldWeight in 918, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.046875 = fieldNorm(doc=918)
0.03637554 = weight(_text_:22 in 918) [ClassicSimilarity], result of:
0.03637554 = score(doc=918,freq=2.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.23214069 = fieldWeight in 918, 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=918)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 21. 3.2023 19:22:14
-
Nah, I.W.; Kang, D.-S.; Lee, D.-H.; Chung, Y.-C.: ¬A bibliometric evaluation of research performance in different subject categories (2009)
0.03
0.03383623 = product of:
0.06767246 = sum of:
0.06767246 = product of:
0.101508684 = sum of:
0.02136124 = weight(_text_:h in 2772) [ClassicSimilarity], result of:
0.02136124 = score(doc=2772,freq=2.0), product of:
0.11117145 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.04474692 = queryNorm
0.19214681 = fieldWeight in 2772, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0546875 = fieldNorm(doc=2772)
0.080147445 = weight(_text_:y in 2772) [ClassicSimilarity], result of:
0.080147445 = score(doc=2772,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.3721901 = fieldWeight in 2772, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0546875 = fieldNorm(doc=2772)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
-
Zhang, Y.: ¬The impact of Internet-based electronic resources on formal scholarly communication in the area of library and information science : a citation analysis (1998)
0.03
0.033372387 = product of:
0.066744775 = sum of:
0.066744775 = product of:
0.10011716 = sum of:
0.05724818 = weight(_text_:y in 2808) [ClassicSimilarity], result of:
0.05724818 = score(doc=2808,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.26585007 = fieldWeight in 2808, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=2808)
0.042868987 = weight(_text_:22 in 2808) [ClassicSimilarity], result of:
0.042868987 = score(doc=2808,freq=4.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.27358043 = fieldWeight in 2808, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2808)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 30. 1.1999 17:22:22
-
Crespo, J.A.; Herranz, N.; Li, Y.; Ruiz-Castillo, J.: ¬The effect on citation inequality of differences in citation practices at the web of science subject category level (2014)
0.03
0.033372387 = product of:
0.066744775 = sum of:
0.066744775 = product of:
0.10011716 = sum of:
0.05724818 = weight(_text_:y in 1291) [ClassicSimilarity], result of:
0.05724818 = score(doc=1291,freq=2.0), product of:
0.2153401 = queryWeight, product of:
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.04474692 = queryNorm
0.26585007 = fieldWeight in 1291, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.8124003 = idf(docFreq=976, maxDocs=44218)
0.0390625 = fieldNorm(doc=1291)
0.042868987 = weight(_text_:22 in 1291) [ClassicSimilarity], result of:
0.042868987 = score(doc=1291,freq=4.0), product of:
0.1566961 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04474692 = queryNorm
0.27358043 = fieldWeight in 1291, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=1291)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Abstract
- This article studies the impact of differences in citation practices at the subfield, or Web of Science subject category level, using the model introduced in Crespo, Li, and Ruiz-Castillo (2013a), according to which the number of citations received by an article depends on its underlying scientific influence and the field to which it belongs. We use the same Thomson Reuters data set of about 4.4 million articles used in Crespo et al. (2013a) to analyze 22 broad fields. The main results are the following: First, when the classification system goes from 22 fields to 219 subfields the effect on citation inequality of differences in citation practices increases from ?14% at the field level to 18% at the subfield level. Second, we estimate a set of exchange rates (ERs) over a wide [660, 978] citation quantile interval to express the citation counts of articles into the equivalent counts in the all-sciences case. In the fractional case, for example, we find that in 187 of 219 subfields the ERs are reliable in the sense that the coefficient of variation is smaller than or equal to 0.10. Third, in the fractional case the normalization of the raw data using the ERs (or subfield mean citations) as normalization factors reduces the importance of the differences in citation practices from 18% to 3.8% (3.4%) of overall citation inequality. Fourth, the results in the fractional case are essentially replicated when we adopt a multiplicative approach.
