-
Bar-Ilan, J.: Informetrics (2009)
0.03
0.03378243 = product of:
0.06756486 = sum of:
0.06756486 = product of:
0.13512972 = sum of:
0.13512972 = weight(_text_:encyclopedia in 3822) [ClassicSimilarity], result of:
0.13512972 = score(doc=3822,freq=4.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.49892458 = fieldWeight in 3822, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.046875 = fieldNorm(doc=3822)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Informetrics is a subfield of information science and it encompasses bibliometrics, scientometrics, cybermetrics, and webometrics. This encyclopedia entry provides an overview of informetrics and its subfields. In general, informetrics deals with quantitative aspects of information: its production, dissemination, evaluation, and use. Bibliometrics and scientometrics study scientific literature: papers, journals, patents, and citations; while in webometric studies the sources studied are Web pages and Web sites, and citations are replaced by hypertext links. The entry introduces major topics in informetrics: citation analysis and citation related studies, the journal impact factor, the recently defined h-index, citation databases, co-citation analysis, open access publications and its implications, informetric laws, techniques for mapping and visualization of informetric phenomena, the emerging subfields of webometrics, cybermetrics and link analysis, and research evaluation.
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
White, H.D.: Bibliometric overview of information science (2009)
0.03
0.03185038 = product of:
0.06370076 = sum of:
0.06370076 = product of:
0.12740152 = sum of:
0.12740152 = weight(_text_:encyclopedia in 3753) [ClassicSimilarity], result of:
0.12740152 = score(doc=3753,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.4703906 = fieldWeight in 3753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0625 = fieldNorm(doc=3753)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Rousseau, R.: Informetric laws (2009)
0.03
0.03185038 = product of:
0.06370076 = sum of:
0.06370076 = product of:
0.12740152 = sum of:
0.12740152 = weight(_text_:encyclopedia in 3795) [ClassicSimilarity], result of:
0.12740152 = score(doc=3795,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.4703906 = fieldWeight in 3795, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0625 = fieldNorm(doc=3795)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Hertzel, D.H.: Bibliometric research: history (2009)
0.03
0.03185038 = product of:
0.06370076 = sum of:
0.06370076 = product of:
0.12740152 = sum of:
0.12740152 = weight(_text_:encyclopedia in 3807) [ClassicSimilarity], result of:
0.12740152 = score(doc=3807,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.4703906 = fieldWeight in 3807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0625 = fieldNorm(doc=3807)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Brooks, T.: Citer motivations (2009)
0.03
0.027869083 = product of:
0.055738166 = sum of:
0.055738166 = product of:
0.11147633 = sum of:
0.11147633 = weight(_text_:encyclopedia in 3809) [ClassicSimilarity], result of:
0.11147633 = score(doc=3809,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.41159177 = fieldWeight in 3809, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0546875 = fieldNorm(doc=3809)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Bhavnani, S.K.; Wilson, C.S.: Information scattering (2009)
0.03
0.027869083 = product of:
0.055738166 = sum of:
0.055738166 = product of:
0.11147633 = sum of:
0.11147633 = weight(_text_:encyclopedia in 3816) [ClassicSimilarity], result of:
0.11147633 = score(doc=3816,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.41159177 = fieldWeight in 3816, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0546875 = fieldNorm(doc=3816)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Nicolaisen, J.: Citation analysis (2007)
0.03
0.027580835 = product of:
0.05516167 = sum of:
0.05516167 = product of:
0.11032334 = sum of:
0.11032334 = weight(_text_:22 in 6091) [ClassicSimilarity], result of:
0.11032334 = score(doc=6091,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
- Date
- 13. 7.2008 19:53:22
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.02
0.024378244 = product of:
0.048756488 = sum of:
0.048756488 = product of:
0.097512975 = sum of:
0.097512975 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.097512975 = score(doc=3925,freq=4.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:22:28
-
Thelwall, M.: Webometrics (2009)
0.02
0.023887785 = product of:
0.04777557 = sum of:
0.04777557 = product of:
0.09555114 = sum of:
0.09555114 = weight(_text_:encyclopedia in 3906) [ClassicSimilarity], result of:
0.09555114 = score(doc=3906,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.35279295 = fieldWeight in 3906, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.046875 = fieldNorm(doc=3906)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Lewison, G.: ¬The work of the Bibliometrics Research Group (City University) and associates (2005)
0.02
0.020685624 = product of:
0.04137125 = sum of:
0.04137125 = product of:
0.0827425 = sum of:
0.0827425 = weight(_text_:22 in 4890) [ClassicSimilarity], result of:
0.0827425 = score(doc=4890,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
- Date
- 20. 1.2007 17:02:22
-
White, H.D.: Citation analysis : history (2009)
0.02
0.01990649 = product of:
0.03981298 = sum of:
0.03981298 = product of:
0.07962596 = sum of:
0.07962596 = weight(_text_:encyclopedia in 3763) [ClassicSimilarity], result of:
0.07962596 = score(doc=3763,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.29399413 = fieldWeight in 3763, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.0390625 = fieldNorm(doc=3763)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
-
Qin, J.: Semantic patterns in bibliographically coupled documents (2002)
0.02
0.01592519 = product of:
0.03185038 = sum of:
0.03185038 = product of:
0.06370076 = sum of:
0.06370076 = weight(_text_:encyclopedia in 4266) [ClassicSimilarity], result of:
0.06370076 = score(doc=4266,freq=2.0), product of:
0.270842 = queryWeight, product of:
5.321862 = idf(docFreq=586, maxDocs=44218)
0.05089233 = queryNorm
0.2351953 = fieldWeight in 4266, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.321862 = idf(docFreq=586, maxDocs=44218)
0.03125 = fieldNorm(doc=4266)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Encyclopedia of library and information science. Vol.72, [=Suppl.35]
-
Raan, A.F.J. van: Statistical properties of bibliometric indicators : research group indicator distributions and correlations (2006)
0.01
0.014626947 = product of:
0.029253894 = sum of:
0.029253894 = product of:
0.05850779 = sum of:
0.05850779 = weight(_text_:22 in 5275) [ClassicSimilarity], result of:
0.05850779 = score(doc=5275,freq=4.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 16:20:22
-
Larivière, V.; Gingras, Y.; Archambault, E.: ¬The decline in the concentration of citations, 1900-2007 (2009)
0.01
0.014626947 = product of:
0.029253894 = sum of:
0.029253894 = product of:
0.05850779 = sum of:
0.05850779 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
0.05850779 = score(doc=2763,freq=4.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
- Date
- 22. 3.2009 19:22:35
-
Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006)
0.01
0.013790417 = product of:
0.027580835 = sum of:
0.027580835 = product of:
0.05516167 = sum of:
0.05516167 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
0.05516167 = score(doc=77,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = queryNorm
0.30952093 = fieldWeight in 77, 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=77)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 4.12.2006 12:12:22
-
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
0.013790417 = product of:
0.027580835 = sum of:
0.027580835 = product of:
0.05516167 = sum of:
0.05516167 = weight(_text_:22 in 1144) [ClassicSimilarity], result of:
0.05516167 = score(doc=1144,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
- Date
- 30.12.2007 11:22:39
-
Levitt, J.M.; Thelwall, M.: Citation levels and collaboration within library and information science (2009)
0.01
0.012189122 = product of:
0.024378244 = sum of:
0.024378244 = product of:
0.048756488 = sum of:
0.048756488 = weight(_text_:22 in 2734) [ClassicSimilarity], result of:
0.048756488 = score(doc=2734,freq=4.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = queryNorm
0.27358043 = fieldWeight in 2734, 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=2734)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Collaboration is a major research policy objective, but does it deliver higher quality research? This study uses citation analysis to examine the Web of Science (WoS) Information Science & Library Science subject category (IS&LS) to ascertain whether, in general, more highly cited articles are more highly collaborative than other articles. It consists of two investigations. The first investigation is a longitudinal comparison of the degree and proportion of collaboration in five strata of citation; it found that collaboration in the highest four citation strata (all in the most highly cited 22%) increased in unison over time, whereas collaboration in the lowest citation strata (un-cited articles) remained low and stable. Given that over 40% of the articles were un-cited, it seems important to take into account the differences found between un-cited articles and relatively highly cited articles when investigating collaboration in IS&LS. The second investigation compares collaboration for 35 influential information scientists; it found that their more highly cited articles on average were not more highly collaborative than their less highly cited articles. In summary, although collaborative research is conducive to high citation in general, collaboration has apparently not tended to be essential to the success of current and former elite information scientists.
- Date
- 22. 3.2009 12:43:51
-
Burrell, Q.L.: Predicting future citation behavior (2003)
0.01
0.012066615 = product of:
0.02413323 = sum of:
0.02413323 = product of:
0.04826646 = sum of:
0.04826646 = weight(_text_:22 in 3837) [ClassicSimilarity], result of:
0.04826646 = score(doc=3837,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = queryNorm
0.2708308 = fieldWeight in 3837, 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=3837)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 29. 3.2003 19:22:48
-
Leydesdorff, L.: Can networks of journal-journal citations be used as indicators of change in the social sciences? (2003)
0.01
0.010342812 = product of:
0.020685624 = sum of:
0.020685624 = product of:
0.04137125 = sum of:
0.04137125 = weight(_text_:22 in 4460) [ClassicSimilarity], result of:
0.04137125 = score(doc=4460,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = queryNorm
0.23214069 = fieldWeight in 4460, 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=4460)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 6.11.2005 19:02:22
-
Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006)
0.01
0.010342812 = product of:
0.020685624 = sum of:
0.020685624 = product of:
0.04137125 = sum of:
0.04137125 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
0.04137125 = score(doc=5270,freq=2.0), product of:
0.17821628 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05089233 = 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)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:26:24
