The Hirsch index is a unified scientific productivity metric used to evaluate the performance of scientists, research groups, journals, organizations, and countries. It is calculated using two variables: the citation index and the number of publications.
The general formula for calculating the Hirsch index: H-index = h if each scientific research (h) is cited at least h times. The metric was developed by Horsche Hirsch in 2005. Since then, it has been widely used for a unified assessment of the impact of scientific studies. This metric has become so significant that all global scientometric databases and platforms are using it: Scopus, Web of Science, Google Scholar, etc.
Although there are hundreds of modifications of the Hirsch index today, the most popular version has been its "classic" version for almost 20 years.
H-index has several benefits:
The Hirsch index in Scopus is a metric in scientific productivity and activity within the Scopus scientometric database. To calculate the h-index, information on indexed publications in Scopus journals and the number of citations for each of them is used.
The Scopus Hirsch Index is available in the scientist's and research organization's profile. A more detailed analysis of its change trends can be found on the specialized resource SciVal.
The Hirsch index in Web of Science is a metric for the total assessment of the impact of researchers, universities, scientific institutions, and countries, calculated considering the number of scientific studies and their quality (citation index).
The indexing of materials, profiles of authors, institutions, and journals in Web of Science Core Collections plays a crucial role in the calculations.
The Hirsch index in Google Scholar is one of the most comprehensive indicators of a researcher's scientific activity, as it addresses the entire range of the author's scientific achievements. It considers the popularity of the author's scientific developments and the scientist's activity based on all materials available on the web.
Given the openness of the Google Scholar platform, the Hirsch index is usually higher there than in Scopus and Web of Science.
Moldovan National H-index Ranking is a ranking list of research organizations and scientists within the country. It is formed based on the Hirsch index in Scopus, Web of Science, and Google Scholar, divided by two*.
*To calculate the ranking, the compilers decided to divide the Google Scholar Hirsch index by two. This is determined by a less careful selection of data that may be duplicated in different languages and have a lower scientific value. The calculation of the H-index (Google Scholar) as ½ of the Hirsch index in Google Scholar minimizes the impact of such information on the purity, transparency, and quality of calculations.
Н-index (Scopus) – is calculated as the total Hirsch index of a scientific organization based on information published by the Scopus database.
Н-index (Web of Science) – is the total Hirsch index of a scientific institution in Web of Science.
Н-index (Google Scholar) – is a measure of the organization's Hirsch index in Google Scholar.
National H-index – is the arithmetic average of the H-index (Scopus), H-index (Web of Science), and H-index (Google Scholar). This indicator is used to determine the position of the institution in the ranking (Position).
The Moldovan National H-index Ranking uses information from Scopus, Web of Science, and Google Scholar to collect data and assess the scientific productivity of scientists, research groups, and research organizations in each country.
The following is a general approach to calculating the Moldovan National H-index Ranking based on these three databases:
Moldovan National H-index Ranking collects data from Scopus, Web of Science, and Google Scholar, using keyword queries and filters to find studies published by scientists and institutions in each country.
Moldovan National H-index Ranking evaluates the scientific productivity of scientists, research groups, and scientific organizations using the H-index metric. For each scientist and research group in each country, the H-index is calculated using information from the Scopus, Web of Science, and Google Scholar databases.
Moldovan National H-index Ranking ranks scientists, research groups, and research organizations in each country based on their H-index. Scientists and groups are ranked in descending order of the H-index, i.e., scientists and groups with higher Hirsch indexes are higher in the ranking.
Moldovan National H-index Ranking ranks the results depending on the project's objectives and the specifics of each country's scientific productivity.
The positions of scientific organizations in the Moldovan National H-index Ranking are divided into three categories:
In addition to the ranking positions of research organizations, the "TOP 1000 scientists" within each of them are determined. This is an individual rating of scientists within research institutions based on the total H-index.
The Moldovan National H-index Ranking provides information on the total score of the country's Worst Country Index for three metrics:
This will assist, if necessary, in assessing the country's position in the region or comparing similar countries by their Hirsch index.
The ranked lists are formed based on the author's methodology, the main indicators of which are described above. The process of data analysis is carried out using specialized computer programs, mathematical models, and computing equipment with the use of manual processing of the information received.
The ranking is updated twice a year: in May and November. This allows to meet the needs of scientific organizations as much as possible, as these months are the period of reporting on the results of scientific and publication activities.
Based on the Moldovan National H-index Ranking Roadmap, the process of updating the information will become even more prompt (every month), and in the most positive scenario, the Moldovan National H-index Ranking indicators will be updated in real-time.
The responsibility for the accuracy of the data and indicators lies with the scientific organizations and authors. To ensure the correctness of the data, we advocate for regular profile reviews. Organizations should review the profiles and indicators of their affiliated scientists to identify the use of unfair practices. Scientific institutions should take the necessary corrective and preventive measures against violations of the ethics of scientific publications.
The Moldovan National H-index Ranking tries to cover the maximum number of scientific organizations and profiles of scientists around the world. However, due to the global amount of data and the relative closeness of some platforms, there may be cases when the profile of an organization/author is missing. We encourage information cooperation as much as possible and would be grateful if you could draw our attention to the fact of missing data. In this case, please contact technical support via email or a special form on the website.
To be sure that the data in the profiles of organizations and authors is complete, become a partner of the Moldovan National H-index Ranking. This will allow to communicate directly with the compilers of the ranked lists and facilitate the more prompt and accurate data entry of information about research organizations, their affiliated authors, and their performance.
Become partner organizationThis may happen due to several issues; these are the most common:
Please fill out the appropriate form for authors on the Moldovan National H-index Ranking website. We will analyze the information you have submitted and, if you have the required scientometric indicators, include your profile in the TOP 1000 scientists in Scopus or TOP 1000 scientists in Google Scholar.
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