Scopus
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Producer | Elsevier (Netherlands) |
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History | 10 November 2004 |
Languages | 40 languages |
Access | |
Providers | Elsevier |
Cost | Subscription |
Coverage | |
Disciplines | Life sciences; social sciences; physical sciences; health sciences |
Record depth | 41,462 indexed titles (2021) |
Format coverage | csv, BibText, ASCII, RIS |
Temporal coverage | 1788–present |
Geospatial coverage | Worldwide |
No.of records | 82.4 million |
Update frequency | daily |
Links | |
Website | www |
Title list(s) | www |
Scopusis a scientificabstract and citation database,launched by the academic publisherElsevieras a competitor to olderWeb of Sciencein 2004.[1]An ensuing competition between the two databases has been characterized as "intense" and is considered to significantly benefit their users in terms of continuous improvent in coverage, search/analysis capabilities, but not in price. Free databaseThe Lenscompletes the triad of main universal academic research databases.
Journals in Scopus are reviewed for sufficient quality each year according to four numerical measures:h-Index,CiteScore,SJR (SCImago Journal Rank) and SNIP (source normalized impact per paper). For this reason, the journals listed in Scopus are considered to meet the requirement forpeer reviewquality established by severalresearch grantagencies for their grant recipients and bydegree-accreditation boards in a number of countries.[2]
Scopus also allows patent searches from a dedicated patent database,Lexis-Nexis,albeit with limited functionality.[3]
Overview
[edit]Comparing ease of use and coverage of Scopus and theWeb of Science(WOS), a 2006 study concluded that Scopus is "easy to navigate, even for the novice user.... The ability to search both forward and backward from a particular citation would be very helpful to the researcher. The multidisciplinary aspect allows the researcher to easily search outside of his discipline" and "One advantage of WOS over Scopus is the depth of coverage, with the full WOS database going back to 1945 and Scopus going back to 1966. However, Scopus and WOS complement each other as neither resource is all-inclusive."[4]A small number of studies found ca. 80-90% overlap in coverage between WoS and Scopus for the period between 1990 and 2020.
In terms of thestructured query languagesearch capabilities Scopus is somewhat more advanced thanWeb of Science:for example, WoS can perform only NEAR/n queries, Scopus can also do PRE/n queries.[5]
Also, when the same article was covered in Scopus and in theWeb of Science(WoS), its Scopus entry had a keyword ratio 3-5 of than its WoS counterpart, and the Scopus keywords are more focused on the specific article content, whereas WoS has more keywords related to the broad category of the article's subject. A larger number of narrow-targeted keywords allows Scopus users to find a larger number of relevant publications, while filtering out false positives. On the other hand, WoS exports (e.g. in therisformat) thedoinumbers of cited articles, while Scopus exports the titles of cited articles. Also, Scopus allows exporting 20,000 references (e.g. as a ris file) at once, while WoS export is limited to 5,000 references at once.
Scopus provides chemical search byCAS numberand by chemical name, while WoS does not have these features. On the other hand, WoS has chemical structure search, but only a small number of publications are actually indexed for chemical structure searches.SciFinderis the preferred option for chemical searches is all cases.
Scopus also offers author profiles which cover affiliations, number of publications and theirbibliographicdata,references,and details on the number of citations each published document has received. It has alerting features that allow registered users to track changes to a profile and a facility to calculate authors'h-index.In 2016, a gratis website, Scopus CiteScore,[6]was introduced. It provides citation data for all 25,000+ active titles such as journals, conference proceedings and books in Scopus and provides an alternative to theimpact factor,ajournal-levelindicator which may correlate negatively with reliability.[7]
Scopus IDs for individual authors can be integrated with the non-proprietary digital identifierORCID.[8]
In 2018, Scopus started embedding partial information about theopen accessstatus of works, usingUnpaywalldata.[9]However, Scopus' ris export files do not contain the information aboutOpen Accessstatus.
Content selection and advisory board
[edit]SinceElsevieris the owner of Scopus and is also one of the main international publishers of scientific journals, an independent and international Scopus Content Selection and advisory board (CSAB) was established in 2009 to prevent a potential conflict of interest in the choice of journals to be included in the database and to maintain an open and transparent content coverage policy, regardless of publisher.[10]The board consists of scientists and subject librarians. Nevertheless, critique over a perceived conflict of interest has continued.[11]
CSAB team is responsible for inclusion and exclusion of different titles on Scopus. The list of journals and books indexed in Scopus is updated 2 to 3 times per year. Each year Scopus receives around 3,500 submissions for new titles to be included and accepts approximately 25% of them.[12]The re-evaluation policy is based on four criteria of Publication Concern, Under Performance, Outlier Performance and Continuous curation. Between 2004 and 2020, Scopus included 41,525 and excluded 688 titles[13]Between 2016 and 2023, the CSAB has re-evaluated 990 titles published by 539 different publishers, leading to 536 titles discontinued for inde xing.[14] In 2024 Scopus covered around 28,000 active journals and nearly 300,000 books.
Nevertheless, research continues to show the inclusion ofpredatory journals.[15][16]
While marketed as a global point of reference, Scopus and WoS have been characterised as "structurally biased against research produced in non-Western countries, non-English language research, and research from the arts, humanities, and social sciences".[17]
Derived citation metrics
[edit]orScience-wide author databases of standardized citation indicators
CiteScore
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Citation metrics |
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CiteScore(CS) of anacademic journalis ameasurereflecting the yearly average number ofcitationsto recent articles published in that journal. It is produced byElsevier,based on the citations recorded in the Scopus database. Absoluterankingsandpercentile ranksare also reported for each journal in a given subject area.[18]
This journal evaluation metric was launched in December 2016 as an alternative to theJournal Citation Reports(JCR)impact factor(IF), calculated byClarivate.CiteScore is based on the citations collected for articles published in the preceding four years, instead of two or five in the JCR IF. This enhanced methodology was introduced with the release of CiteScore 2019 in June 2020. At launch, CiteScore's neutrality was questioned by bibliometrics experts likeCarl Bergstrom,who found it appeared to favour Elsevier's titles over Nature's.[19]SCImago Journal Rank
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Citation metrics |
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Controversies
[edit]![]() | This section'stone or style may not reflect theencyclopedic toneused on Wikipedia.(May 2024) |
An article published by "Scholarly Criticism" in 2024 alleges thatElsevierunethically indexed the journalHeliyon,which is published by Elsevier's subsiduary, in Scopus within a few months of its launch. This inde xing occurred with one citation and four published issues in 2015, which the article suggests does not align with the rules prescribed for other journals. The article further alleges that Elsevier was motivated to engage in this practice, which the article calls a "conflict of interest," in order to attract authors to publish in Heliyon, which charges an article processing charge of USD 2,100 per publication.[20]
See also
[edit]References
[edit]- ^Goodman, David; Deis, Louise (1 January 2005)."Web of Science (2004 version) and Scopus".The Charleston Advisor.6(3): 5–21.Archivedfrom the original on 12 August 2023.Retrieved12 August2023.
- ^[1]Archived2 July 2022 at theWayback Machine;[2]Archived19 May 2023 at theWayback Machine
- ^Kulkarni, A. V.; Aziz, B.; Shams, I.; Busse, J. W. (2009)."Comparisons of Citations in Web of Science, Scopus, and Google Scholar for Articles Published in General Medical Journals".JAMA.302(10): 1092–6.doi:10.1001/jama.2009.1307.PMID19738094.
- ^Burnham, JF (2006)."Scopus database: A review".Biomedical Digital Libraries.3:1.doi:10.1186/1742-5581-3-1.PMC1420322.PMID16522216.
- ^Echchakoui, Saïd (2020)."Why and how to merge Scopus and Web of Science during bibliometric analysis: The case of sales force literature from 1912 to 2019".Journal of Marketing Analytics.8(3): 165–184.doi:10.1057/s41270-020-00081-9.S2CID256510471.Archivedfrom the original on 18 May 2023.Retrieved18 May2023.
- ^"Sources".Scopus.Archivedfrom the original on 27 December 2016.Retrieved26 June2018.
- ^Brembs, Björn (2018)."Prestigious Science Journals Struggle to Reach Even Average Reliability".Frontiers in Human Neuroscience.12:37.doi:10.3389/fnhum.2018.00037.PMC5826185.PMID29515380.
- ^"Scopus2Orcid".Scopus. Archived fromthe originalon 24 July 2014.Retrieved7 May2014.
- ^Else, Holly (15 August 2018)."How Unpaywall is transforming open science".Nature.560(7718): 290–291.Bibcode:2018Natur.560..290E.doi:10.1038/d41586-018-05968-3.PMID30111793.
- ^"Scopus Content Overview: Content Policy and Selection".Scopus Info.Elsevier.Archivedfrom the original on 24 April 2015.Retrieved4 September2013.
- ^"Elsevier are corrupting open science in Europe".TheGuardian.29 June 2018.Archivedfrom the original on 5 January 2021.Retrieved14 August2021.
- ^Wilches-Visbal JH, Pérez-Anaya O, Castillo-Pedraza MC. DISCONTINUED REASONS OF JOURNALS IN SCOPUS: ANALYSIS AND REFLECTIONS. Bibl, An Investig. 2024;20(1)https:// researchgate.net/publication/377727326_Discontinued_reasons_of_journals_in_SCOPUS_analysis_and_reflections?enrichId=rgreq-3545ee0db7d9f06d060445d5327f9219-XXX&enrichSource=Y292ZXJQYWdlOzM3NzcyNzMyNjtBUzoxMTQzMTI4MTIyMDIzODc5NkAxNzA2MzI0NjAxNDg1&el=1_x_2&_esc=publicationCoverPdf
- ^"extlistJune2021".Archived fromthe originalon 21 July 2021.Retrieved21 July2021.
- ^"The importance of high-quality content: curation and reevaluation in Scopus"(PDF).Archived(PDF)from the original on 10 October 2021.Retrieved21 July2021.
- ^"IDEA Study 2 2017 Predatory journals in Scopus".idea-en.cerge-ei.cz.Archivedfrom the original on 27 July 2021.Retrieved14 August2021.
- ^Singh Chawla, Dalmeet (8 February 2021). "Hundreds of 'predatory' journals indexed on leading scholarly database".Nature.doi:10.1038/d41586-021-00239-0.PMID33558751.S2CID231871351.
- ^Tennant, Jonathan P. (27 October 2020)."Web of Science and Scopus are not global databases of knowledge".European Science Editing.46:e51987.doi:10.3897/ese.2020.e51987.ISSN2518-3354.
- ^"How are CiteScore metrics used in Scopus?".Scopus: Access and use Support Center.29 July 2022.Retrieved24 May2023.
- ^Straumsheim, Carl."How to Measure Impact".Inside Higher Ed.Retrieved13 August2023.
- ^"Elsevier Unethically Promotes its Journals via Scopus: The Case of Heliyon".Scholarly Criticism Articles.Scholarly Criticism: A Watchdog on published Business Research.Retrieved23 April2024.
External links
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