Aims
The Papers per Faculty (PPF) indicator measures the volume of research being undertaken by the departments within an institution.
Unlike Citations per Paper, which looks at the impact of research, Papers per Faculty is a measure of a department’s raw productivity when it comes to academic research.
Any ranking which features Papers per Faculty also includes Citations per Paper, serving to balance productivity with impact. The two indicators taken together give a rounded view of an institution’s research strength.
It forms part of the Research and Discovery lens.
Relevant Rankings
Papers per Faculty is an Indicator used in the following 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 Research and Discovery lens.
Methodology
Below you can find the weighting(s) for the indicator. Weightings are reviewed on an annual basis.
Ranking Project | Weighting |
QS Arab Region Rankings | 5% |
QS Asia Region Rankings | 5% |
QS Europe Region Rankings | 5% |
QS Latin America and Caribbean Region Rankings | 5% |
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.
An extract is provided to us in Q1 of each year which is used for the new cycle of each ranking, beginning with the World University Rankings.
Data is from two distinct datasets:
- paper count over a five-year period;
- citations count for six years for papers published over a five-year period.
Calculations
In University Rankings by Region, a minimum of 100 papers are required to be evaluated in this indicator. This is applied to eliminate anomalous low numbers of papers from overly benefiting small institutions. Also, there are paper thresholds per subject in our Subject Rankings.
Both citations and papers are processed within our regular procedures, excluding faculty area normalization in Subject Rankings.
Additionally, in Subject Rankings citations yielded by papers published in niche journals (with only one ASJC code attributed by Elsevier) carry extra (double) weight. On top of that, institutions with low paper counts have reduced citation count on a sliding scale up to 10 times the paper threshold for a specific subject.
We apply the following adjustments to the papers and citations we index:
Affiliation Cap
The cap is variable and calculated individually for each QS subject, ensuring no more than 0.1% (0.001) of research is excluded in a given field.
Paper-type exclusions
We exclude certain content types from our analysis. These types are defined by Elsevier Scopus. You can see the included and excluded types below under 'Definitions'.
Self-citations exclusion
We exclude citation of an author’s own work by said author. We use an author-level definition of self-citations, as opposed to a journal-level or institution-level definition.
Faculty area normalization
In the QS World University Rankings and QS University Rankings by Region), we equalize the influence of research in our five key faculty areas, so that each contributes 20% to the final indicator.
Definitions
Paper Definitions
We exclude certain content types from our analysis. These types are defined by Elsevier Scopus. You can see the included and excluded lists below.
Included | Excluded |
Article | Abstract Report |
Review | Conference Review |
Conference Paper | Editorial |
Book | Erratum |
Book Chapter | Letter |
Article in Press | Note |
Business Article | Press Release |
Data Paper | Short Survey |
Report | Undefined |
Retracted |