output
20072026
most citedGoogle Scholar, Web of Science, and Scopus: a systematic comparison of citations in 252 subject categories

2k citations

Showing 2015Show all

8 papers · 1 filter

cs.DL2015★ 51 cited

The precision of the arithmetic mean, geometric mean and percentiles for citation data: An experimental simulation modelling approach

Mike Thelwall

When comparing the citation impact of nations, departments or other groups of researchers within individual fields, three approaches have been proposed: arithmetic means, geometric…

cs.DL2015★ 32 cited

National, disciplinary and temporal variations in the extent to which articles with more authors have more impact: Evidence from a geometric field normalised citation indicator

Mike Thelwall, Pardeep Sud

The importance of collaboration in research is widely accepted, as is the fact that articles with more authors tend to be more cited. Nevertheless, although previous studies have i…

cs.DL2015★ 44 cited

National research impact indicators from Mendeley readers

R. Fairclough, M. Thelwall

National research impact indicators derived from citation counts are used by governments to help assess their national research performance and to identify the effect of funding or…

cs.DL2015★ 46 cited

Distributions for cited articles from individual subjects and years

Mike Thelwall, Paul Wilson

The citations to a set of academic articles are typically unevenly shared, with many articles attracting few citations and few attracting many. It is important to know more precise…

cs.DL2015★ 135 cited

Regression for citation data: An evaluation of different methods

Mike Thelwall, Paul Wilson

Citations are increasingly used for research evaluations. It is therefore important to identify factors affecting citation scores that are unrelated to scholarly quality or usefuln…

cs.DL2015★ 68 cited

Geometric journal impact factors correcting for individual highly cited articles

Mike Thelwall, Ruth Fairclough

Journal impact factors (JIFs) are widely used and promoted but have important limitations. In particular, JIFs can be unduly influenced by individual highly cited articles and henc…