International Research Network (IRN) measures an institution’s success in building and sustaining research partnerships with organisations in other countries and territories. It considers both the geographic diversity of an institution’s collaborators and the depth of those relationships. To focus on meaningful collaboration rather than one-off activity, a partnership is counted only where it produces at least three joint papers within a five-year period.
International research networks enable institutions to exchange expertise, share resources and address questions that extend beyond national boundaries. Within a ranking, the indicator distinguishes institutions whose international engagement is embedded in sustained research activity from those with a narrower or more occasional pattern of collaboration. It considers partnerships with all entities represented in Elsevier’s Scopus database, not only higher education institutions included in QS rankings.
The indicator uses publication affiliation data from Scopus to identify an institution’s international research partners and the countries or territories they represent. Scores are calculated separately across five faculty areas: Arts and Humanities; Engineering and Technology; Life Sciences and Medicine; Natural Sciences; and Social Sciences and Management. Within each area, the number of locations represented is assessed in relation to the number of partners, before the results are normalised, averaged and rescaled to produce the final score.
By assessing performance across broad faculty areas, IRN recognises that patterns of collaboration differ between disciplines. Research is assigned to subject areas using Scopus’s All Science Journal Classification (ASJC) codes, while relevant publication types are included and affiliation caps are applied to reduce distortion from papers involving exceptionally large numbers of institutions. This creates a consistent basis for comparing the breadth and continuity of international research networks.
IRN primarily relates to the themes of global engagement, international research and institutional partnerships. A high score indicates that an institution has developed a geographically diverse network supported by repeated research collaboration, rather than relying on a small number of isolated international connections. The indicator also touches on research capacity and the ability to participate in sustained international knowledge exchange.
The indicator complements measures of international faculty, international students and student mobility by examining internationalisation through research relationships. It also complements research indicators such as Academic Reputation, Citations per Faculty, Citations per Paper and Papers per Faculty: these assess research standing, impact or volume, whereas IRN focuses on the structure, diversity and continuity of the collaborative network through which research is produced.
Relevant Rankings
International Research Network is an indicator used in the following rankings:
- QS World University Rankings
- QS Subject Rankings
- QS Arab Region Rankings
- QS Asia Region Rankings
- QS Europe Region Rankings
- QS Latin America and Caribbean Region Rankings
It forms part of the Global Engagement lens.
Methodology
Calculation Summary
International Research Network is calculated from Elsevier Scopus publication and affiliation data over a five-year observation period. The calculation identifies sustained international research partnerships, defined as partnerships between an institution and an entity in another country or territory that produce at least three eligible joint papers during the period.
For each institution, the number of distinct international countries and territories represented by sustained partners is assessed relative to the natural logarithm of the number of distinct international partners. This calculation is performed separately for five faculty areas: Arts and Humanities; Engineering and Technology; Life Sciences and Medicine; Natural Sciences; and Social Sciences and Management.
The resulting faculty-level values are scaled using min-max normalisation from 1–100. The five scaled faculty scores are then averaged to create an institution-level mean score. Z-score normalisation is applied to this mean, and the resulting value is rescaled to produce the final International Research Network score for the relevant QS ranking project.
Below you can find the weightings for the indicator. Weightings are reviewed on an annual basis.
| Ranking Project | Weighting |
| QS World University Rankings | 5% |
| QS Subject Rankings |
5% Arts and Humanities 10% Engineering and Technology 10% Life Sciences and Medicine 10% Natural Sciences 5% Social Sciences and Management |
| QS Arab Region Rankings | 10% |
| QS Asia Region Rankings | 10% |
| QS Europe Region Rankings | 10% |
| QS Latin America and Caribbean Region Rankings | 10% |
QS Subject Rankings
In the QS Subject Rankings, we only include International Research Network for subjects with a paper threshold of more than 50 papers over the last five years.
Data Sources
The data used for this indicator is drawn from Elsevier's Scopus research database. Scopus is a source-neutral abstract and citation database curated by independent subject matter experts.
Calculations
For papers in the five faculty areas:
Show IRN Formula
IRN = Distinct Countries or Territories / ln (Distinct International Partners)
- The distinct count of international countries/territories is divided by the natural logarithm of the distinct count of international partners
- The values for each faculty are scaled using min-max normalization from 1-100
- We create an average (mean) of the scaled scores
- Z-score normalization is applied
- The Z-score is rescaled
*Steps 1-3 are not applicable for the QS Subject Rankings
