Submitted:
05 January 2026
Posted:
07 January 2026
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Abstract
Keywords:
Introduction
“Rank correlation shows that correlation is low with THE and QS. This may have been expected as they are partially survey-based and partially based on bibliometric indicators. The correlation with Scimago and the Leiden Ranking, which are based only on bibliometric indicators is better. In fact, correlation is best with the Leiden ranking (~ 0.7) which also has a size-independent variant.”
“However, their technical limitations such as duplicated profiles, spurious citations, and possible manipulations, make advisable that the use of these citation indexes in research evaluation will be jointly other citation databases that permit to detect biases or gaps that could under value the analysis of an institution, discipline, or author. As many of these limitations are probably due to the novelty of these platforms, it can be expected that future developments would improve these services and they became stronger competitors of the actual subscription-based citation databases.”
“Firstly, Redundant profiles, which increased their citation and rank to produce false results. Secondly, the exclusion of theses and dissertation documents to retrieve the actual publications to count for citations. Thirdly, the elimination of falsely owned articles from scholars’ profiles.”
- a)
- Incorrect identification of the title of the document;
- b)
- Ghost authors;
- c)
- Book reviews indexed as books;
- d)
- Incorrect attribution of documents to authors;
- e)
- Failing to merge all versions of a same document into one record;
- f)
- Grouping different editions of the same book in a single record;
- g)
- Improper attribution of citations to a document;
- h)
- Duplicate citations;
- i)
- Missing citations;
- j)
- Duplicate profile;
- k)
- Variety of document types (including non-academic documents);
- l)
- Inclusion of missattributed documents in the profile;
- m)
- Deliberate manipulation of documents and citations in Google Scholar;
- n)
- Duplicate documents in profiles;
- o)
- Incorrectly merged documents;
- p)
- Unclean document titles;
- q)
- Missing or uncommon areas of interest.
New Methodology for Calculating the Webometrics University Ranking and Its Resource Support
Proof of Comparability Between the Old and New Webometrics University Ranking Calculation Methodologies
Comparison of Google Scholar and OpenAlex Services and Reasons for Switching to OpenAlex When Calculating Webometrics University Ranking
“Google Scholar: One of the most important academic search engines due to its estimated size (389 million) and age (2004), it obtains data directly from the web. Special agreements with publishers allow it to extract citations and content information from paywalled journals. Its search interface can also access books (Google Books) and patents (Google Patents);
OpenAlex: This is the newest service (2022). It was created by OurResearch, a nonprofit organization that recovered the defunct Microsoft Academic Graph (203 million) to implement a new open product. The core of OpenAlex was then set up by Microsoft Academic Graph, with the addition of data from other open sources such as Crossref, PubMed, and ORCID. OpenAlex now indexes 240 million publications.”
“GS and OpenAlex therefore have the potential to serve as first-choice discovery mechanisms as long as their interfaces and subject-search capabilities meet the user’s requirements.”
The Importance of Establishing and Maintaining Institutional and Personal GSCPs
Conclusions
References
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| University | WR Jan 2025 | WR July 2025 | WRJan./WRJuly |
| Johns Hopkins University, School of Medicine (USA) | 267 | 45 | 5.93 |
| University of Birmingham (UK) | 485 | 116 | 4.18 |
| Leiden University (Netherlands) | 528 | 146 | 3.62 |
| University of Minnesota Twin Cities (USA) | 724 | 264 | 2.74 |
| Hong Kong University of Science & Tech. (Hong Kong) | 812 | 280 | 2.9 |
| Weill Medical College, Cornell University (USA) | 1148 | 555 | 2.07 |
| Universidade Nova de Lisboa (Portugal) | 881 | 372 | 2.37 |
| University of Hawaii at Manoa (USA) | 1,099 | 492 | 2.23 |
| Universite du Quebec (Canada) | 1,036 | 601 | 1.72 |
| Swinburne University of Technology (Australia) | 963 | 433 | 2.17 |
| Nanjing Agricultural University (China) | 1,189 | 519 | 2.29 |
| Technische Universitat Wien (Austria) | 1,201 | 516 | 2.33 |
| Universidad de Navarra (Spain) | 1,254 | 585 | 2.14 |
| Syracuse University (USA) | 1,278 | 637 | 2.01 |
| J.W. Goethe Universität Frankfurt am Main (Germany) | 1,340 | 633 | 2.12 |
| University of Florida Health (USA) | 1,251 | 648 | 1.93 |
| Universidade Federal do Bahia (Brazil) | 1,427 | 697 | 2.05 |
| Victoria University of Wellington (Australia) | 1,264 | 613 | 2.06 |
| Royal Holloway University of London (UK) | 1,462 | 783 | 1.87 |
| University of Maine (USA) | 1,332 | 707 | 1.88 |
| Universidad de Valladolid (Spain) | 1,339 | 665 | 2.01 |
| Université de Lyon (France) | 1,481 | 931 | 1.59 |
| Universidade Federal do Ceara (Brazil) | 1,460 | 754 | 1.94 |
| Universidad de Antioquia (Colombia) | 1,656 | 870 | 1.9 |
| Chiba University (Japan) | 1,601 | 790 | 2.03 |
| Medizinische Hochschule Hannover (Germany) | 1,665 | 795 | 2.09 |
| North West University (South Africa) | 1,721 | 892 | 1.93 |
| Pontificia Universidade Católica do Rio de Janeiro (Brazil) | 1,618 | 918 | 1.76 |
| National University of Sciences & Technology (Pakistan) | 1,658 | 884 | 1.88 |
| Illinois State University (USA) | 1,941 | 1,213 | 1.52 |
| Universidad de Costa Rica (Costa Rica) | 1,869 | 1,091 | 1.71 |
| Universitas Padjadjaran Bandung (Indonesia) | 1,832 | 956 | 1.92 |
| Maynooth University (Ireland) | 1,893 | 1,039 | 1.77 |
| University of Bucharest (Romania) | 1,792 | 940 | 1.91 |
| Universitat Oberta de Catalunya (Spain) | 1,504 | 839 | 1.79 |
| Universidad de Leon (Spain) | 1,948 | 1,104 | 1.77 |
| Universidad Politécnica de Valencia (Spain) | 787 | 324 | 2.43 |
| Sciences Po Institut d'Études Politiques de Paris (France) | 1,920 | 1374 | 1.4 |
| Universidad Europea de Madrid (Spain) | 1,908 | 1,148 | 1.66 |
| University of Regina (Canada) | 1,501 | 810 | 1.85 |
| University | WR Jan 2024 | WR July 2024 | WRJan./WRJuly |
| Universidad de Sevilla (Spain) | 733 | 285 | 2.57 |
| Universitat Pompeu Fabra (Spain) | 760 | 266 | 2.86 |
| University of Warsaw (Poland) | 763 | 353 | 2.16 |
| Universidade Federal do Rio Grande do Sul (Brazil) | 846 | 340 | 2.49 |
| Universidade de Coimbra (Portugal) | 871 | 315 | 2.77 |
| Universidad Nacional de Colombia (Colombia) | 1,155 | 577 | 2 |
| Universidade Federal do Sao Paulo (Brazil) | 1,205 | 637 | 1.89 |
| Universidade de Estadual de Maringa (Brazil) | 1,600 | 917 | 1.75 |
| Tabriat Modares University (Iran) | 1,641 | 783 | 2.1 |
| Tabriz University of Medical Sciences (Iran) | 1,662 | 878 | 1.89 |
| Universidad de Jaen (Chile) | 1,664 | 784 | 2.12 |
| Mashhad University of Medical Sciences (Iran) | 1,845 | 892 | 2.07 |
| Universidade Federal do ABC UFABC (Brazil) | 1,877 | 1,178 | 1.59 |
| Asia University Taiwan (Taiwan) | 1,882 | 1,160 | 1.62 |
| Statistic | Value (Table 2) | Value (Table 3) |
| n | 40 | 14 |
| Mean | 2.187 | 2.134 |
| SD | 0.797 | 0.402 |
| 95% CI | [1.932; 2.442] | [1.902; 2.366] |
| 99% CI | [1.845; 2.528] | [1.811; 2.458] |
| Sampling Layer (January ranks) | N | Pearson r | p-value | Spearman ρ | p-value |
| Top-100 (1–93, 95–100) | 99 | 0.991 | < 0.001 | 0.991 | < 0.001 |
| Mid layer (451–550, excl. 485, 528, 535) | 97 | 0.7013 | < 0.001 | 0.7299 | < 0.001 |
| Bottom layer (901–1000, excl. 905, 963) | 98 | 0.3423 | < 0.001 | 0.3369 | < 0.001 |
| TOTAL (Global Sample) | 294 | 0.9831 | < 0.001 | 0.9843 | < 0.001 |
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