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Coverage of highly-cited documents in Google Scholar, Web of Science, and Scopus: a multidisciplinary comparison

Alberto Martín-Martín, Enrique Orduna-Malea, Emilio Delgado López-Cózar
2018 Scientometrics  
The main conclusion is that the data about highly-cited documents available in the inclusive database Google Scholar does indeed reveal significant coverage deficiencies in Web of Science and Scopus in  ...  The results show that a large fraction of highly-cited documents in the Social Sciences and Humanities (8.6%-28.2%) are invisible to Web of Science and Scopus.  ...  Acknowledgements Alberto Martín-Martín enjoys a four-year doctoral fellowship (FPU2013/05863) granted by the Ministerio de Educación, Cultura, y Deportes (Spain).  ... 
doi:10.1007/s11192-018-2820-9 fatcat:n6weoriuqfbmtewb3qcmfufsve

Coverage of highly-cited documents in Google Scholar, Web of Science, and Scopus: a multidisciplinary comparison

Alberto Martín-Martín, Enrique Orduna-Malea, Emilio López-Cózar
2018
The main conclusion is that the data about highly-cited documents available in the inclusive database Google Scholar does indeed reveal significant coverage deficiencies in Web of Science and Scopus in  ...  The results show that a large fraction of highly-cited documents in the Social Sciences and Humanities (8.6%-28.2%) are invisible to Web of Science and Scopus.  ...  Acknowledgements Alberto Martín-Martín enjoys a four-year doctoral fellowship (FPU2013/05863) granted by the Ministerio de Educación, Cultura, y Deportes (Spain).  ... 
doi:10.17605/osf.io/hcx27 fatcat:wers4rknwbbvdp5zzlhhao4smy

Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations' COCI: a multidisciplinary comparison of coverage via citations [article]

Alberto Martín-Martín, Mike Thelwall, Enrique Orduna-Malea, Emilio Delgado López-Cózar
2020 Scientometrics   accepted
Although these have been compared to the Web of Science (WoS), Scopus, or Google Scholar, there is no systematic evidence of their differences across subject categories.  ...  A similar pattern held within most subject categories. Microsoft Academic is the second largest overall (60% of all citations), including 82% of Scopus citations and 86% of Web of Science citations.  ...  Figure 3 . 3 Comparison of citing document overlaps between Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and COCI (pairwise).  ... 
doi:10.1007/s11192-020-03690-4 pmid:32981987 pmcid:PMC7505221 arXiv:2004.14329v2 fatcat:74wpfemwznhkleebhipn5gmphe

Microsoft Academic: A multidisciplinary comparison of citation counts with Scopus and Mendeley for 29 journals

Mike Thelwall
2017 Journal of Informetrics  
Previous studies have found that its citation counts tend to be slightly larger than those of Scopus but smaller than Google Scholar, with disciplinary variations.  ...  This study reports the largest and most systematic analysis so far, of 172,752 articles in 29 large journals chosen from different specialisms.  ...  Given this potential it is important to compare the coverage of Microsoft Academic with that of other citation indexes, such as Google Scholar, Scopus and the Web of Science (WoS) to evaluate its suitability  ... 
doi:10.1016/j.joi.2017.10.006 fatcat:cht4dcltz5dj5kmfmshngdzyxu

Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories

Alberto Martín-Martín, Enrique Orduna-Malea, Mike Thelwall, Emilio Delgado López-Cózar
2018 Journal of Informetrics  
Despite citation counts from Google Scholar (GS), Web of Science (WoS), and Scopus being widely consulted by researchers and sometimes used in research evaluations, there is no recent or systematic evidence  ...  The results suggest that in all areas GS citation data is essentially a superset of WoS and Scopus, with substantial extra coverage.  ...  An international mobility grant from Universidad de Granada and CEI BioTic Granada funded a research stay at the University of Wolverhampton.  ... 
doi:10.1016/j.joi.2018.09.002 fatcat:qte7rp6j7jcfhedgizzunngygm

Which h-index? — A comparison of WoS, Scopus and Google Scholar

Judit Bar-Ilan
2007 Scientometrics  
This paper compares the h-indices of a list of highly-cited Israeli researchers based on citations counts retrieved from the Web of Science, Scopus and Google Scholar respectively.  ...  In several case the results obtained through Google Scholar are considerably different from the results based on the Web of Science and Scopus. Data cleansing is discussed extensively.  ...  and Google Scholar for highly cited Israeli researchers for 1996-2006  ... 
doi:10.1007/s11192-008-0216-y fatcat:jowmesseubbzfjepxl72l7mppy

The Journal Coverage of Web of Science, Scopus and Dimensions: A Comparative Analysis [article]

Vivek Kumar Singh, Prashasti Singh, Mousumi Karmakar, Jacqueline Leta, Philipp Mayr
2020 arXiv   pre-print
This article attempts to compare the journal coverage of the three databases: Web of Science, Scopus and Dimensions.  ...  About 99.11% and 96.61% of the journals indexed in Web of Science are also indexed in Scopus and Dimensions, respectively. Scopus has 96.42% of its indexed journals also covered by Dimensions.  ...  The results showed that a large fraction of highly-cited documents in the Social Sciences and Humanities were invisible to Web of Science and Scopus.  ... 
arXiv:2011.00223v1 fatcat:cmyd7ahqhzbwlop6cccxcjvofu

Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic [article]

Martijn Visser, Nees Jan van Eck, Ludo Waltman
2021 arXiv   pre-print
We present a large-scale comparison of five multidisciplinary bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic.  ...  The comparison considers scientific documents from the period 2008-2017 covered by these data sources. Scopus is compared in a pairwise manner with each of the other data sources.  ...  CWTS has commercial relationships with Clarivate Analytics, Elsevier, and Digital Science, the producers of Web of Science, Scopus, and Dimensions, respectively.  ... 
arXiv:2005.10732v2 fatcat:wyxocupbh5h53dca7jupbo3dju

The journal coverage of Web of Science and Scopus: a comparative analysis

Philippe Mongeon, Adèle Paul-Hus
2015 Scientometrics  
Most bibliometric analyses have in common their data sources: Thomson Reuters' Web of Science (WoS) and Elsevier's Scopus.  ...  This research compares the journal coverage of both databases in terms of fields, countries and languages, using Ulrich's extensive periodical directory as a base for comparison.  ...  LIS journals scientific impact and subject categorization: a comparison between Web of Science and Scopus. Scientometrics, 94(2), 721-740. Cited references  ... 
doi:10.1007/s11192-015-1765-5 fatcat:vu7yujlzn5gpbhmor2skr6orpi

A New Era in Citation and Bibliometric Analyses: Web of Science, Scopus, and Google Scholar [article]

Lokman I. Meho, Kiduk Yang
2006 arXiv   pre-print
Using a group of 15 library and information science faculty members as a case study, this paper examines the effects of using Scopus and Google Scholar (GS) on the citation counts and rankings of scholars  ...  Overall, more than 10,000 citing and purportedly citing documents were examined.  ...  NOTE This project was partially funded by OCLC Library and Information Science Research Grant Project.  ... 
arXiv:cs/0612132v1 fatcat:ooznka5mdnerjgkct42v44u6yy

Dimensions: A competitor to Scopus and the Web of Science?

Mike Thelwall
2018 Journal of Informetrics  
Thus, the scholarly database component of Dimensions seems to be a plausible alternative to Scopus and the Web of Science for general citation analyses and for citation data in support of some types of  ...  This article explores the value of Dimensions from an impact assessment perspective with an examination of Food Science research 2008-2018 and a random sample of 10,000 Scopus articles from 2012.  ...  This is a one-way comparison since Dimensions may cover articles that are not in Scopus but should nevertheless give broad insights into whether Dimensions has substantial coverage of science.  ... 
doi:10.1016/j.joi.2018.03.006 fatcat:5vll7w5cwbakdbqb2hjnksrc4q

Measuring Social Media Activity of Scientific Literature: An Exhaustive Comparison of Scopus and Novel Altmetrics Big Data [article]

Saeed-Ul Hassan, Mubashir Imran, Uzair Gillani, Naif Radi Aljohani, Timothy D. Bowman, Fereshteh Didegah
2017 arXiv   pre-print
Results indicate a rapid increase in the presence of Altmetric.com data in Scopus database from 10.19% in 2011 to 20.46% in 2015.  ...  encouragingly AUC= 0.725 between highly cited publications and total altmetric count.  ...  , especially in the case of highly cited papers.  ... 
arXiv:1705.03258v2 fatcat:mwodyabuqndunknx4twkxce7yy

Google Books, Scopus, Microsoft Academic and Mendeley for impact assessment of doctoral dissertations: A multidisciplinary analysis of the UK

Kayvan Kousha, Mike Thelwall
2020 Quantitative Science Studies  
In the Social Sciences, Google Books (13%) and Scopus (12%) citations were important and in Medical Sciences, Scopus and Microsoft Academic citations to dissertations were rare (6%).  ...  Few dissertations had Mendeley readers (from 3% in Science to 8% in the Social Sciences) and further analysis suggests that Google Scholar finds more citations but does not report information about all  ...  Google Scholar is the best source for the citation impact assessment of dissertations because of its coverage of a wide range of citing document types, but is most useful when a manageably small number  ... 
doi:10.1162/qss_a_00042 fatcat:ywlkp2c4x5ckpcdbke74im7syu

Coverage of Google Scholar, Scopus, and Web of Science: A case study of the h-index in nursing

Sandra L. De Groote, Rebecca Raszewski
2012 Nursing Outlook  
Purpose: This study compares the articles cited in CINAHL, Scopus, Web of Science (WOS), and Google Scholar and the h-index ratings provided by Scopus, WOS, and Google Scholar.  ...  Results: Scopus, WOS, and Google Scholar provided different h-index ratings for authors and each database found unique and duplicate citing references.  ...  Databases Used in Study Web of Science (WOS) is a multidisciplinary database known for its cited reference coverage from Thomson Reuters.  ... 
doi:10.1016/j.outlook.2012.04.007 pmid:22748758 fatcat:pqw425pnina4re56bh62ibrwxe

A Comparison of Web of Science and Scopus for Iranian Publications and Citation Impact

M. A. Erfanmanesh, F. Didegah
2013 International journal of information science and management  
This study mainly aims to compare the quantity of Iranian publications and their citation impact in the two popular citation databases, Scopus and Web of Science.  ...  Based on the results, the number of Iranian publications was higher in Scopus than WOS and also the number of citations per publication in Scopus was rather doubled in comparison with WOS.  ...  study of WOS, Scopus and Google Scholar for a set of 15 Business and Economics journals.  ... 
doaj:a46cc65ab7c7422b838a85fe6d156670 fatcat:eqc6hy77xzbhtm4la4bxcwt2xy
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