Ecole Polytechnique Federale de Lausanne

EXECUTIVE SUMMARY AND STRATEGIC VISION

The Ecole Polytechnique Federale de Lausanne (EPFL) presents a robust and highly competitive scientific integrity profile, reflected in an overall risk score of -0.109. This positions the institution in close alignment with the strong national standards of Switzerland, demonstrating a solid foundation of responsible research practices. Key strengths are evident in areas of fundamental quality control, including exceptionally low rates of publication in discontinued journals, minimal institutional self-citation, and a healthy balance between collaborative impact and internally-led research. However, areas requiring strategic monitoring have been identified, primarily concerning authorship and productivity patterns, such as hyper-authorship, hyper-prolificity, and redundant publications. These signals, while moderate, suggest underlying pressures that could, if unaddressed, conflict with the institution's core mission. This mission, focused on delivering a "world-class diploma" through "unique competence centres" and fostering "the courage to undertake" innovation, is powerfully supported by EPFL's outstanding global leadership in key thematic areas, including top-tier SCImago Institutions Rankings in Energy, Physics and Astronomy, Engineering, and Computer Science. To ensure that research practices fully embody this standard of excellence, it is recommended that EPFL proactively reviews its incentive structures and authorship guidelines, thereby reinforcing the qualitative integrity that underpins its prestigious global reputation and its commitment to meaningful scientific advancement.

ANALYSIS BY INDICATOR

Rate of Multiple Affiliations

The institution's Z-score of 0.929 is situated within a national context where the average is 1.185. This indicates that while the practice of multiple affiliations is a notable characteristic of the Swiss research ecosystem, EPFL appears to manage this dynamic with more moderation than the national average. While multiple affiliations are often a legitimate result of researcher mobility or partnerships, disproportionately high rates can signal strategic attempts to inflate institutional credit. EPFL's comparatively lower score suggests a differentiated management approach that helps moderate the risks of "affiliation shopping" that may be more common elsewhere in the country, reflecting a more controlled policy on collaborative attribution.

Rate of Retracted Output

With a Z-score of -0.324, which is lower than the Swiss national average of -0.211, the institution demonstrates a prudent and rigorous profile in its quality assurance processes. Retractions are complex events, and a rate significantly lower than an already low national benchmark suggests that quality control mechanisms prior to publication are functioning effectively. This performance points to a strong institutional culture of integrity and methodological rigor, where potential errors are likely identified and corrected before they enter the scientific record, reinforcing the reliability of its research output.

Rate of Institutional Self-Citation

The institution's Z-score of -0.351 is notably lower than the national average of -0.264, indicating a prudent profile that actively avoids scientific isolation. A certain level of self-citation is natural, reflecting the continuity of research lines. However, EPFL's superior performance in this area demonstrates that its academic influence is validated by the broader global community rather than being sustained by internal 'echo chambers'. This strong external recognition mitigates the risk of endogamous impact inflation and confirms that the institution's work is integrated and relevant on an international scale.

Rate of Output in Discontinued Journals

EPFL's Z-score of -0.498 shows near-perfect integrity synchrony with the Swiss national average of -0.486, reflecting a shared environment of maximum scientific security. This total alignment demonstrates an exceptional level of due diligence in the selection of dissemination channels across the institution. Such a low rate indicates that a robust information literacy culture is in place, effectively steering researchers away from predatory or low-quality publications. This protects the institution from severe reputational risks and ensures that research efforts are channeled into credible and impactful venues.

Rate of Hyper-Authored Output

The institution's Z-score of 1.046 is higher than the national average of 0.904, suggesting a high exposure to this risk factor compared to its national peers. While extensive author lists are legitimate in 'Big Science' fields, an elevated rate outside these contexts can indicate author list inflation, which dilutes individual accountability and transparency. This signal suggests that EPFL is more prone to this practice than the Swiss average, highlighting a need to reinforce clear authorship criteria to distinguish between necessary massive collaboration and potentially problematic 'honorary' or political authorship practices.

Gap between Impact of total output and the impact of output with leadership

With a Z-score of -0.722, significantly below the national average of -0.140, the institution exhibits a prudent and remarkably healthy profile. This low gap demonstrates a strong equilibrium between the impact generated in collaboration with external partners and that of research where EPFL exercises direct intellectual leadership. This result signals that the institution's scientific prestige is built on a solid foundation of structural, internal capacity and is not overly dependent on exogenous factors. It reflects a sustainable model of excellence where EPFL is a true driver of high-impact science.

Rate of Hyperprolific Authors

The institution's Z-score of 0.005 marks a moderate deviation from the national average of -0.051, indicating a greater sensitivity to risk factors encouraging extreme productivity. While high output can reflect leadership, extreme individual volumes challenge the limits of meaningful intellectual contribution. This divergence from the national norm serves as an alert to potential imbalances between quantity and quality, pointing to risks such as coercive authorship or the assignment of authorship without real participation. It suggests a need to review institutional incentives to ensure they prioritize the integrity of the scientific record over purely quantitative metrics.

Rate of Output in Institutional Journals

The institution's Z-score of -0.268 is in lockstep with the Swiss national score of -0.266, demonstrating an integrity synchrony that reflects a shared commitment to external validation. This alignment shows that EPFL avoids the potential conflicts of interest and academic endogamy associated with excessive reliance on in-house journals. By consistently favoring independent, external peer review, the institution ensures its scientific production is held to a global standard, thereby maximizing its international visibility and reinforcing the credibility of its research findings.

Rate of Redundant Output (Salami Slicing)

With a Z-score of 0.463, the institution shows a moderate deviation from the national average of -0.269, suggesting it is more sensitive than its peers to practices that lead to redundant publications. This elevated rate alerts to the potential for 'salami slicing,' where a coherent study is fragmented into minimal publishable units to artificially inflate productivity metrics. This practice not only overburdens the peer review system but can also distort the scientific evidence base. The signal indicates a need to reinforce a culture that values the publication of significant, holistic contributions over the sheer volume of outputs.