-
Li, X.; Thelwall, M.; Kousha, K.: ¬The role of arXiv, RePEc, SSRN and PMC in formal scholarly communication (2015)
0.03
0.02864049 = product of:
0.05728098 = sum of:
0.05728098 = sum of:
0.02183863 = weight(_text_:20 in 2593) [ClassicSimilarity], result of:
0.02183863 = score(doc=2593,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.15185234 = fieldWeight in 2593, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0390625 = fieldNorm(doc=2593)
0.03544235 = weight(_text_:22 in 2593) [ClassicSimilarity], result of:
0.03544235 = score(doc=2593,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 2593, 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=2593)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
-
Thelwall, M.: Are Mendeley reader counts high enough for research evaluations when articles are published? (2017)
0.03
0.02864049 = product of:
0.05728098 = sum of:
0.05728098 = sum of:
0.02183863 = weight(_text_:20 in 3806) [ClassicSimilarity], result of:
0.02183863 = score(doc=3806,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.15185234 = fieldWeight in 3806, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0390625 = fieldNorm(doc=3806)
0.03544235 = weight(_text_:22 in 3806) [ClassicSimilarity], result of:
0.03544235 = score(doc=3806,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 3806, 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=3806)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
-
Thelwall, M.; Thelwall, S.: ¬A thematic analysis of highly retweeted early COVID-19 tweets : consensus, information, dissent and lockdown life (2020)
0.03
0.02864049 = product of:
0.05728098 = sum of:
0.05728098 = sum of:
0.02183863 = weight(_text_:20 in 178) [ClassicSimilarity], result of:
0.02183863 = score(doc=178,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.15185234 = fieldWeight in 178, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0390625 = fieldNorm(doc=178)
0.03544235 = weight(_text_:22 in 178) [ClassicSimilarity], result of:
0.03544235 = score(doc=178,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 178, 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=178)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
-
Thelwall, M.; Kousha, K.; Abdoli, M.; Stuart, E.; Makita, M.; Wilson, P.; Levitt, J.: Why are coauthored academic articles more cited : higher quality or larger audience? (2023)
0.03
0.02864049 = product of:
0.05728098 = sum of:
0.05728098 = sum of:
0.02183863 = weight(_text_:20 in 995) [ClassicSimilarity], result of:
0.02183863 = score(doc=995,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.15185234 = fieldWeight in 995, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0390625 = fieldNorm(doc=995)
0.03544235 = weight(_text_:22 in 995) [ClassicSimilarity], result of:
0.03544235 = score(doc=995,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 995, 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=995)
0.5 = coord(1/2)
- Abstract
- Collaboration is encouraged because it is believed to improve academic research, supported by indirect evidence in the form of more coauthored articles being more cited. Nevertheless, this might not reflect quality but increased self-citations or the "audience effect": citations from increased awareness through multiple author networks. We address this with the first science wide investigation into whether author numbers associate with journal article quality, using expert peer quality judgments for 122,331 articles from the 2014-20 UK national assessment. Spearman correlations between author numbers and quality scores show moderately strong positive associations (0.2-0.4) in the health, life, and physical sciences, but weak or no positive associations in engineering and social sciences, with weak negative/positive or no associations in various arts and humanities, and a possible negative association for decision sciences. This gives the first systematic evidence that greater numbers of authors associates with higher quality journal articles in the majority of academia outside the arts and humanities, at least for the UK. Positive associations between team size and citation counts in areas with little association between team size and quality also show that audience effects or other nonquality factors account for the higher citation rates of coauthored articles in some fields.
- Date
- 22. 6.2023 18:11:50
-
Thelwall, M.; Ruschenburg, T.: Grundlagen und Forschungsfelder der Webometrie (2006)
0.01
0.01417694 = product of:
0.02835388 = sum of:
0.02835388 = product of:
0.05670776 = sum of:
0.05670776 = weight(_text_:22 in 77) [ClassicSimilarity], result of:
0.05670776 = score(doc=77,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = 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
-
Levitt, J.M.; Thelwall, M.: Citation levels and collaboration within library and information science (2009)
0.01
0.012530763 = product of:
0.025061525 = sum of:
0.025061525 = product of:
0.05012305 = sum of:
0.05012305 = weight(_text_:22 in 2734) [ClassicSimilarity], result of:
0.05012305 = score(doc=2734,freq=4.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = 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
-
Thelwall, M.; Buckley, K.; Paltoglou, G.: Sentiment in Twitter events (2011)
0.01
0.010632704 = product of:
0.021265408 = sum of:
0.021265408 = product of:
0.042530816 = sum of:
0.042530816 = weight(_text_:22 in 4345) [ClassicSimilarity], result of:
0.042530816 = score(doc=4345,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.23214069 = fieldWeight in 4345, 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=4345)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 1.2011 14:27:06
-
Thelwall, M.; Maflahi, N.: Guideline references and academic citations as evidence of the clinical value of health research (2016)
0.01
0.010632704 = product of:
0.021265408 = sum of:
0.021265408 = product of:
0.042530816 = sum of:
0.042530816 = weight(_text_:22 in 2856) [ClassicSimilarity], result of:
0.042530816 = score(doc=2856,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.23214069 = fieldWeight in 2856, 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=2856)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 19. 3.2016 12:22:00
-
Thelwall, M.; Sud, P.: Mendeley readership counts : an investigation of temporal and disciplinary differences (2016)
0.01
0.010632704 = product of:
0.021265408 = sum of:
0.021265408 = product of:
0.042530816 = sum of:
0.042530816 = weight(_text_:22 in 3211) [ClassicSimilarity], result of:
0.042530816 = score(doc=3211,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.23214069 = fieldWeight in 3211, 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=3211)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 16.11.2016 11:07:22
-
Didegah, F.; Thelwall, M.: Co-saved, co-tweeted, and co-cited networks (2018)
0.01
0.010632704 = product of:
0.021265408 = sum of:
0.021265408 = product of:
0.042530816 = sum of:
0.042530816 = weight(_text_:22 in 4291) [ClassicSimilarity], result of:
0.042530816 = score(doc=4291,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.23214069 = fieldWeight in 4291, 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=4291)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 28. 7.2018 10:00:22
-
Thelwall, M.; Vaughan, L.: New versions of PageRank employing alternative Web document models (2004)
0.01
0.0092653455 = product of:
0.018530691 = sum of:
0.018530691 = product of:
0.037061382 = sum of:
0.037061382 = weight(_text_:20 in 674) [ClassicSimilarity], result of:
0.037061382 = score(doc=674,freq=4.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.25770196 = fieldWeight in 674, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.046875 = fieldNorm(doc=674)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 12. 3.2001 11:34:20
20. 1.2007 18:32:28
-
Kousha, K.; Thelwall, M.: How is science cited on the Web? : a classification of google unique Web citations (2007)
0.01
0.008860587 = product of:
0.017721174 = sum of:
0.017721174 = product of:
0.03544235 = sum of:
0.03544235 = weight(_text_:22 in 586) [ClassicSimilarity], result of:
0.03544235 = score(doc=586,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 586, 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=586)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Although the analysis of citations in the scholarly literature is now an established and relatively well understood part of information science, not enough is known about citations that can be found on the Web. In particular, are there new Web types, and if so, are these trivial or potentially useful for studying or evaluating research communication? We sought evidence based upon a sample of 1,577 Web citations of the URLs or titles of research articles in 64 open-access journals from biology, physics, chemistry, and computing. Only 25% represented intellectual impact, from references of Web documents (23%) and other informal scholarly sources (2%). Many of the Web/URL citations were created for general or subject-specific navigation (45%) or for self-publicity (22%). Additional analyses revealed significant disciplinary differences in the types of Google unique Web/URL citations as well as some characteristics of scientific open-access publishing on the Web. We conclude that the Web provides access to a new and different type of citation information, one that may therefore enable us to measure different aspects of research, and the research process in particular; but to obtain good information, the different types should be separated.
-
Thelwall, M.; Buckley, K.; Paltoglou, G.; Cai, D.; Kappas, A.: Sentiment strength detection in short informal text (2010)
0.01
0.008860587 = product of:
0.017721174 = sum of:
0.017721174 = product of:
0.03544235 = sum of:
0.03544235 = weight(_text_:22 in 4200) [ClassicSimilarity], result of:
0.03544235 = score(doc=4200,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 4200, 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=4200)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 1.2011 14:29:23
-
Thelwall, M.; Sud, P.; Wilkinson, D.: Link and co-inlink network diagrams with URL citations or title mentions (2012)
0.01
0.008860587 = product of:
0.017721174 = sum of:
0.017721174 = product of:
0.03544235 = sum of:
0.03544235 = weight(_text_:22 in 57) [ClassicSimilarity], result of:
0.03544235 = score(doc=57,freq=2.0), product of:
0.18321139 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05231876 = queryNorm
0.19345059 = fieldWeight in 57, 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=57)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 6. 4.2012 18:16:22
-
Thelwall, M.: Web impact factors and search engine coverage (2000)
0.01
0.008735452 = product of:
0.017470904 = sum of:
0.017470904 = product of:
0.034941807 = sum of:
0.034941807 = weight(_text_:20 in 4539) [ClassicSimilarity], result of:
0.034941807 = score(doc=4539,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.24296375 = fieldWeight in 4539, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0625 = fieldNorm(doc=4539)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 10. 3.1997 20:31:13
-
Thelwall, M.; Binns, R.; Harries, G.; Page-Kennedy, T.; Price, L.; Wilkinson, D.: Custom interfaces for advanced queries in search engines (2001)
0.01
0.007721122 = product of:
0.015442244 = sum of:
0.015442244 = product of:
0.030884488 = sum of:
0.030884488 = weight(_text_:20 in 697) [ClassicSimilarity], result of:
0.030884488 = score(doc=697,freq=4.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.21475165 = fieldWeight in 697, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0390625 = fieldNorm(doc=697)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 12. 3.2001 11:34:20
20. 1.2007 19:24:48
-
Thelwall, M.: Bibliometrics to webometrics (2009)
0.01
0.0076435204 = product of:
0.015287041 = sum of:
0.015287041 = product of:
0.030574081 = sum of:
0.030574081 = weight(_text_:20 in 4239) [ClassicSimilarity], result of:
0.030574081 = score(doc=4239,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.21259327 = fieldWeight in 4239, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0546875 = fieldNorm(doc=4239)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20. 8.2009 14:17:42
-
Vaughan, L.; Thelwall, M.: ¬A modelling approach to uncover hyperlink patterns : the case of Canadian universities (2005)
0.01
0.0076435204 = product of:
0.015287041 = sum of:
0.015287041 = product of:
0.030574081 = sum of:
0.030574081 = weight(_text_:20 in 1014) [ClassicSimilarity], result of:
0.030574081 = score(doc=1014,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.21259327 = fieldWeight in 1014, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.0546875 = fieldNorm(doc=1014)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 26.12.2007 20:17:31
-
Thelwall, M.: Can Google's PageRank be used to find the most important academic Web pages? (2003)
0.01
0.0065515894 = product of:
0.013103179 = sum of:
0.013103179 = product of:
0.026206357 = sum of:
0.026206357 = weight(_text_:20 in 4457) [ClassicSimilarity], result of:
0.026206357 = score(doc=4457,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.18222281 = fieldWeight in 4457, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.046875 = fieldNorm(doc=4457)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 10. 3.1997 20:31:13
-
Thelwall, M.: ¬A comparison of sources of links for academic Web impact factor calculations (2002)
0.01
0.0065515894 = product of:
0.013103179 = sum of:
0.013103179 = product of:
0.026206357 = sum of:
0.026206357 = weight(_text_:20 in 4474) [ClassicSimilarity], result of:
0.026206357 = score(doc=4474,freq=2.0), product of:
0.1438149 = queryWeight, product of:
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.05231876 = queryNorm
0.18222281 = fieldWeight in 4474, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.748821 = idf(docFreq=7692, maxDocs=44218)
0.046875 = fieldNorm(doc=4474)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 10. 3.1997 20:31:13
