-
Costas, R.; Bordons, M.; Leeuwen, T.N. van; Raan, A.F.J. van: Scaling rules in the science system : Influence of field-specific citation characteristics on the impact of individual researchers (2009)
0.27
0.27108574 = product of:
0.40662858 = sum of:
0.2549138 = weight(_text_:a.f.j in 2759) [ClassicSimilarity], result of:
0.2549138 = score(doc=2759,freq=4.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.69247454 = fieldWeight in 2759, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.15171477 = sum of:
0.123580165 = weight(_text_:van in 2759) [ClassicSimilarity], result of:
0.123580165 = score(doc=2759,freq=6.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.5335859 = fieldWeight in 2759, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=2759)
0.028134605 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
0.028134605 = score(doc=2759,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.19345059 = fieldWeight in 2759, 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=2759)
0.6666667 = coord(2/3)
- Date
- 22. 3.2009 19:02:48
- Footnote
- Vgl. auch: Raan, A.F.J. van: Scaling rules in the science system: influence of field-specific citation characteristics on the impact of research groups. In: Journal of the American Society for Information Science and Technology. 59(2008) no.4, S.565-576.
-
Raan, A.F.J. van: Scaling rules in the science system : influence of field-specific citation characteristics on the impact of research groups (2008)
0.25
0.24743092 = product of:
0.37114638 = sum of:
0.21630153 = weight(_text_:a.f.j in 2758) [ClassicSimilarity], result of:
0.21630153 = score(doc=2758,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.58758414 = fieldWeight in 2758, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.15484487 = sum of:
0.12108334 = weight(_text_:van in 2758) [ClassicSimilarity], result of:
0.12108334 = score(doc=2758,freq=4.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.5228053 = fieldWeight in 2758, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=2758)
0.033761524 = weight(_text_:22 in 2758) [ClassicSimilarity], result of:
0.033761524 = score(doc=2758,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.23214069 = fieldWeight in 2758, 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=2758)
0.6666667 = coord(2/3)
- Date
- 22. 3.2009 19:03:12
- Footnote
- Vgl. auch: Costas, R., M. Bordons u. T.N. van Leeuwen u.a.: Scaling rules in the science system: Influence of field-specific citation characteristics on the impact of individual researchers. In: Journal of the American Society for Information Science and Technology. 60(2009) no.4, S.740-753.
-
Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006)
0.23
0.23311093 = product of:
0.3496664 = sum of:
0.21630153 = weight(_text_:a.f.j in 5275) [ClassicSimilarity], result of:
0.21630153 = score(doc=5275,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.58758414 = fieldWeight in 5275, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.046875 = fieldNorm(doc=5275)
0.13336486 = sum of:
0.085618846 = weight(_text_:van in 5275) [ClassicSimilarity], result of:
0.085618846 = score(doc=5275,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.36967915 = fieldWeight in 5275, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=5275)
0.04774601 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
0.04774601 = score(doc=5275,freq=4.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.32829654 = fieldWeight in 5275, 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=5275)
0.6666667 = coord(2/3)
- Date
- 22. 7.2006 16:20:22
-
Raan, A.F.J. van; Noyons, E.C.M.: Discovery of patterns of scientific and technological development and knowledge transfer (2002)
0.14
0.14395052 = product of:
0.21592578 = sum of:
0.18025127 = weight(_text_:a.f.j in 3603) [ClassicSimilarity], result of:
0.18025127 = score(doc=3603,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.4896534 = fieldWeight in 3603, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.0390625 = fieldNorm(doc=3603)
0.03567452 = product of:
0.07134904 = sum of:
0.07134904 = weight(_text_:van in 3603) [ClassicSimilarity], result of:
0.07134904 = score(doc=3603,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.30806595 = fieldWeight in 3603, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=3603)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Raan, A.F.J. van: Bibliometric statistical properties of the 100 largest European research universities : prevalent scaling rules in the science system (2008)
0.14
0.14395052 = product of:
0.21592578 = sum of:
0.18025127 = weight(_text_:a.f.j in 1372) [ClassicSimilarity], result of:
0.18025127 = score(doc=1372,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.4896534 = fieldWeight in 1372, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.0390625 = fieldNorm(doc=1372)
0.03567452 = product of:
0.07134904 = sum of:
0.07134904 = weight(_text_:van in 1372) [ClassicSimilarity], result of:
0.07134904 = score(doc=1372,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.30806595 = fieldWeight in 1372, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=1372)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Raan, A.F.J. van: Self-citation as an impact-reinforcing mechanism in the science system (2008)
0.14
0.14395052 = product of:
0.21592578 = sum of:
0.18025127 = weight(_text_:a.f.j in 2006) [ClassicSimilarity], result of:
0.18025127 = score(doc=2006,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.4896534 = fieldWeight in 2006, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.0390625 = fieldNorm(doc=2006)
0.03567452 = product of:
0.07134904 = sum of:
0.07134904 = weight(_text_:van in 2006) [ClassicSimilarity], result of:
0.07134904 = score(doc=2006,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.30806595 = fieldWeight in 2006, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=2006)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Raan, A.F.J. van: Performance-related differences of bibliometric statistical properties of research groups : cumulative advantages and hierarchically layered networks (2006)
0.12
0.11516042 = product of:
0.17274062 = sum of:
0.14420101 = weight(_text_:a.f.j in 220) [ClassicSimilarity], result of:
0.14420101 = score(doc=220,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.39172274 = fieldWeight in 220, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.03125 = fieldNorm(doc=220)
0.028539617 = product of:
0.057079233 = sum of:
0.057079233 = weight(_text_:van in 220) [ClassicSimilarity], result of:
0.057079233 = score(doc=220,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.24645276 = fieldWeight in 220, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.03125 = fieldNorm(doc=220)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.07
0.07409158 = product of:
0.22227475 = sum of:
0.22227475 = sum of:
0.14269808 = weight(_text_:van in 3925) [ClassicSimilarity], result of:
0.14269808 = score(doc=3925,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.6161319 = fieldWeight in 3925, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.07957668 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.07957668 = score(doc=3925,freq=4.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.54716086 = fieldWeight in 3925, 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=3925)
0.33333334 = coord(1/3)
- Date
- 22. 7.2006 15:22:28
-
Eijk, C.C. van der; Mulligen, E.M. van; Kors, J.A.; Mons, B.; Berg, J. van den: Constructing an associative concept space for literature-based discovery (2004)
0.02
0.024716035 = product of:
0.0741481 = sum of:
0.0741481 = product of:
0.1482962 = sum of:
0.1482962 = weight(_text_:van in 2228) [ClassicSimilarity], result of:
0.1482962 = score(doc=2228,freq=6.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.64030313 = fieldWeight in 2228, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=2228)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Harzing, A.-W.; Wal, R. van der: ¬A Google Scholar h-index for journals : an alternative metric to measure journal impact in economics and business (2009)
0.02
0.019026412 = product of:
0.057079233 = sum of:
0.057079233 = product of:
0.11415847 = sum of:
0.11415847 = weight(_text_:van in 2630) [ClassicSimilarity], result of:
0.11415847 = score(doc=2630,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.49290553 = fieldWeight in 2630, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0625 = fieldNorm(doc=2630)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Eck, N.J. van; Waltman, L.: Appropriate similarity measures for author co-citation analysis (2008)
0.02
0.01664811 = product of:
0.049944326 = sum of:
0.049944326 = product of:
0.09988865 = sum of:
0.09988865 = weight(_text_:van in 2008) [ClassicSimilarity], result of:
0.09988865 = score(doc=2008,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.43129233 = fieldWeight in 2008, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0546875 = fieldNorm(doc=2008)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Nicolaisen, J.: Citation analysis (2007)
0.02
0.015005123 = product of:
0.04501537 = sum of:
0.04501537 = product of:
0.09003074 = sum of:
0.09003074 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
0.09003074 = score(doc=6091,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.61904186 = fieldWeight in 6091, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=6091)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 13. 7.2008 19:53:22
-
Egghe, L.; Rousseau, R.; Hooydonk, G. van: Methods for accrediting publications to authors or countries : consequences for evaluation studies (2000)
0.01
0.014269808 = product of:
0.042809423 = sum of:
0.042809423 = product of:
0.085618846 = sum of:
0.085618846 = weight(_text_:van in 4384) [ClassicSimilarity], result of:
0.085618846 = score(doc=4384,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.36967915 = fieldWeight in 4384, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=4384)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Weeber, M.; Klein, H.; Jong-van den Berg, L.T.W. de; Vos, R.: Using concepts in literature-based discovery : simulating Swanson's Raynaud-Fish Oil and Migraine-Manesium discoveries (2001)
0.01
0.014269808 = product of:
0.042809423 = sum of:
0.042809423 = product of:
0.085618846 = sum of:
0.085618846 = weight(_text_:van in 5910) [ClassicSimilarity], result of:
0.085618846 = score(doc=5910,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.36967915 = fieldWeight in 5910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=5910)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Impe, S. van; Rousseau, R.: Web-to-print citations and the humanities (2006)
0.01
0.014269808 = product of:
0.042809423 = sum of:
0.042809423 = product of:
0.085618846 = sum of:
0.085618846 = weight(_text_:van in 82) [ClassicSimilarity], result of:
0.085618846 = score(doc=82,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.36967915 = fieldWeight in 82, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.046875 = fieldNorm(doc=82)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Leydesdorff, L.; Heimeriks, G.: ¬The self-organization of the European information society : the case of "biotechnology" (2001)
0.01
0.011891507 = product of:
0.03567452 = sum of:
0.03567452 = product of:
0.07134904 = sum of:
0.07134904 = weight(_text_:van in 6524) [ClassicSimilarity], result of:
0.07134904 = score(doc=6524,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.30806595 = fieldWeight in 6524, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=6524)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Footnote
- Vgl. auch die Stellungnahme von P. van den Besselaar: Empirical evidence of self-organization? in: JASIST 54(2003) no.1, S.87-90.
-
Johan Bollen, J.; Van de Sompel, H.: Usage impact factor : the effects of sample characteristics on usage-based impact metrics (2008)
0.01
0.011891507 = product of:
0.03567452 = sum of:
0.03567452 = product of:
0.07134904 = sum of:
0.07134904 = weight(_text_:van in 1346) [ClassicSimilarity], result of:
0.07134904 = score(doc=1346,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.30806595 = fieldWeight in 1346, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0390625 = fieldNorm(doc=1346)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005)
0.01
0.011253841 = product of:
0.033761524 = sum of:
0.033761524 = product of:
0.06752305 = sum of:
0.06752305 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
0.06752305 = score(doc=4890,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.46428138 = fieldWeight in 4890, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=4890)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 20. 1.2007 17:02:22
-
Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009)
0.01
0.007957669 = product of:
0.023873005 = sum of:
0.023873005 = product of:
0.04774601 = sum of:
0.04774601 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
0.04774601 = score(doc=2763,freq=4.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = 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)
0.33333334 = coord(1/3)
- Date
- 22. 3.2009 19:22:35
-
Rostaing, H.; Barts, N.; Léveillé, V.: Bibliometrics: representation instrument of the multidisciplinary positioning of a scientific area : Implementation for an Advisory Scientific Committee (2007)
0.01
0.0075025614 = product of:
0.022507684 = sum of:
0.022507684 = product of:
0.04501537 = sum of:
0.04501537 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
0.04501537 = score(doc=1144,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = 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)
0.33333334 = coord(1/3)
- Date
- 30.12.2007 11:22:39
