Étiquette : Scopus

Catégories
EN

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

Authors : Martijn Visser, Nees Jan van Eck, Ludo Waltman

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.

We first analyze differences between the data sources in the coverage of documents, focusing for instance on differences over time, differences per document type, and differences per discipline.

We then study differences in the completeness and accuracy of citation links. Based on our analysis, we discuss strengths and weaknesses of the different data sources. We emphasize the importance of combining a comprehensive coverage of the scientific literature with a flexible set of filters for making selections of the literature.

URL : https://arxiv.org/abs/2005.10732

Catégories
EN

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

Authors : Alberto Martín-Martín, Mike Thelwall, Enrique Orduna-Malea, Emilio Delgado López-Cózar

New sources of citation data have recently become available, such as Microsoft Academic, Dimensions, and the OpenCitations Index of CrossRef open DOI-to-DOI citations (COCI). Although these have been compared to the Web of Science Core Collection (WoS), Scopus, or Google Scholar, there is no systematic evidence of their differences across subject categories.

In response, this paper investigates 3,073,351 citations found by these six data sources to 2,515 English-language highly-cited documents published in 2006 from 252 subject categories, expanding and updating the largest previous study. Google Scholar found 88% of all citations, many of which were not found by the other sources, and nearly all citations found by the remaining sources (89–94%).

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 WoS citations. In most categories, Microsoft Academic found more citations than Scopus and WoS (182 and 223 subject categories, respectively), but had coverage gaps in some areas, such as Physics and some Humanities categories. After Scopus, Dimensions is fourth largest (54% of all citations), including 84% of Scopus citations and 88% of WoS citations.

It found more citations than Scopus in 36 categories, more than WoS in 185, and displays some coverage gaps, especially in the Humanities. Following WoS, COCI is the smallest, with 28% of all citations. Google Scholar is still the most comprehensive source. In many subject categories Microsoft Academic and Dimensions are good alternatives to Scopus and WoS in terms of coverage.

DOI : https://doi.org/10.1007/s11192-020-03690-4

Catégories
Non classé

Prevalence of Potentially Predatory Publishing in Scopus on the Country Level

Authors : Tatiana Savina, Ivan Sterligov

We present the results of a large-scale study of potentially predatory journals (PPJ) represented in the Scopus database, which is widely used for research evaluation. Both journal metrics and country, disciplinary data have been evaluated for different groups of PPJ: those listed by Jeffrey Beall and those delisted by Scopus because of « publication concerns ».

Our results show that even after years of delisting, PPJ are still highly visible in the Scopus database with hundreds of active potentially predatory journals. PPJ papers are continuously produced by all major countries, but with different shares. All major subject areas are affected. The largest number of PPJ papers are in engineering and medicine.

On average, PPJ have much lower citation metrics than other Scopus-indexed journals. We conclude with a brief survey of the case of Kazakhstan where the share of PPJ papers at one time amounted to almost a half of all Kazakhstan papers in Scopus, and propose a link between PPJ share and national research evaluation policies (in particular, rules of awarding academic degrees).

The progress of potentially predatory journal research will be increasingly important because such evaluation methods are becoming more widespread in times of the Metric Tide.

URL : https://arxiv.org/abs/2003.08283

Catégories
EN

Scopus as a curated, high-quality bibliometric data source for academic research in quantitative science studies

Authors : Jeroen Baas, Michiel Schotten, Andrew Plume, Grégoire Côté, Reza Karimi

Scopus is among the largest curated abstract and citation databases, with a wide global and regional coverage of scientific journals, conference proceedings, and books, while ensuring only the highest quality data are indexed through rigorous content selection and re-evaluation by an independent Content Selection and Advisory Board.

Additionally, extensive quality assurance processes continuously monitor and improve all data elements in Scopus. Besides enriched metadata records of scientific articles, Scopus offers comprehensive author and institution profiles, obtained from advanced profiling algorithms and manual curation, ensuring high precision and recall.

The trustworthiness of Scopus has led to its use as bibliometric data source for large-scale analyses in research assessments, research landscape studies, science policy evaluations, and university rankings.

Scopus data have been offered for free for selected studies by the academic research community, such as through application programming interfaces, which have led to many publications employing Scopus data to investigate topics such as researcher mobility, network visualizations, and spatial bibliometrics.

In June 2019, the International Center for the Study of Research was launched, with an advisory board consisting of bibliometricians, aiming to work with the scientometric research community and offering a virtual laboratory where researchers will be able to utilize Scopus data.

URL : Scopus as a curated, high-quality bibliometric data source for academic research in quantitative science studies

DOI : https://doi.org/10.1162/qss_a_00019

Catégories
EN

Competence-Based Management Research in the Web of Science and Scopus Databases: Scientific Production, Collaboration, and Impact

Authors : Vítor Vasata Macchi Silva, José Luis Duarte Ribeiro, Gonzalo Rubén Alvarez, Sonia Elisa Caregnato

This paper presents a bibliometric study, which seeks to characterize papers that address competence-based management and that are indexed in the Web of Science and Scopus databases in terms of scientific production, collaboration, and impact.

All the papers published in journals or in conference proceedings that contained the terms “competenc* management” or “compentenc* based management” in their titles, abstracts, or keywords were analyzed.

The results show that computational sciences, human resources management, strategic management, and industrial relations and labor correspond to the macro-categories that characterize competence-based management.

This paper also indicates that collaborations between authors do not establish strong co-authorship networks. It also shows that the most cited papers were published in journals of different areas.

It concludes that studies conducted in the area of competence-based management can be developed in a more assertive way if they take into consideration the context of the current state of research in this area.

URL : Competence-Based Management Research in the Web of Science and Scopus Databases: Scientific Production, Collaboration, and Impact

Alternative location : https://www.mdpi.com/2304-6775/7/4/60

Catégories
EN

The citation from patents to scientific output revisited: a new approach to the matching Patstat / Scopus

Authors : Vicente P. Gerrero-Bote, Rodrigo Sánchez-Jiménez, Félix De-Moya-Anegón

Patents include citations, both to other patents and to documents that are not patents (NPL, Non-patent literature). Among the latter include citations to articles published in scientific journals.

Just as the scientific impact is studied through the citation of articles and other scientific works, the technological impact of scientific works can also be studied through the citation they receive from patents.

The NPL references included in the patents are far from being standardized, so determining which scientific article they refer to is not trivial. This paper presents a procedure for linking the NPL references of the patents collected in the Patstat database and the scientific works indexed in the Scopus bibliographic database.

This procedure consists of two phases: a broad generation of candidate couples and another phase of validation of couples. It has been implemented with reasonable good results and affordable costs.

URL : https://recyt.fecyt.es/index.php/EPI/article/view/epi.2019.jul.01

Catégories
EN

Is Scopus Polluting Its Own Database by Indexing Junk articles? A Case Study of Five Journals

Author : Jackie Earle Haley

The aim of this short research note is to demonstrate that Scopus is polluting its own databases, unintentionally or otherwise, by indexing junk articles. I have used five journals indexed by Scopus in this research note as examples in a case study format.

I have found that the publication rate of junk articles for these five journals increased after they began to be indexed in Scopus. These journals are publishing conference papers and graduate students’ initial research reports in which there are many errors.

This makes the indexing of The Journal of Social Sciences Research (Online ISSN: 2411-9458/Print ISSN: 2413-6670) questionable as it was considered for evaluation before its current two year publication history.

The quality of its published articles is very poor, and it has advertised and promoted false figures for its impact factors. These journals publish articles that are out of their scope and publish every article on condition of payment of a fee by the author that averages out to about 400 USD per article.

Given that these journals have been advertising and promoting fake impact factors prior to their being indexed in Scopus and given that Scopus has included them in its central index, they are deceiving young researchers and the broader academic community with false information.

Beall (2016) has previously pointed out the issue of the falsified impact factor information in his list of predatory journals. Many universities subscribe to Scopus to, among other reasons, measure the impact of their faculty members’ research.

There is therefore a need to address the ethics of this situation, and this study recommends that Scopus carefully index new journals but observe the publication rates of junk articles, and if an indexed journal makes such an error, to take a decision within three months and impose a lifetime ban on indexing the journal.

URL : https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3322183