University of Plovdiv Paisii Hilendarski

EXECUTIVE SUMMARY AND STRATEGIC VISION

The University of Plovdiv Paisii Hilendarski demonstrates a robust overall performance in scientific integrity, reflected in its low global risk score of 0.059. The institution exhibits significant strengths in areas critical to sustainable scientific development, including a strong capacity for intellectual leadership, a commitment to external validation over institutional journals, and responsible authorship practices that avoid hyper-prolificacy. These positive indicators provide a solid foundation for its national leadership in key thematic areas as identified by SCImago Institutions Rankings, such as Engineering (#1), Mathematics (#1), and Computer Science (#2). However, the analysis also reveals three areas of medium-risk exposure that are more pronounced than the national average: Institutional Self-Citation, Output in Discontinued Journals, and Redundant Output. These practices could potentially undermine the University's mission to foster "critical streamlining of the scientific, cultural and historical traditions" and create "models of civic virtue." An over-reliance on self-validation, publication in low-quality venues, and fragmentation of knowledge contradict the principles of excellence and societal benefit. To fully align its operational practices with its stated mission, it is recommended that the University focuses strategic efforts on promoting broader external engagement and reinforcing policies that prioritize impactful, consolidated research over sheer publication volume.

ANALYSIS BY INDICATOR

Rate of Multiple Affiliations

The institution presents a Z-score of -0.396, which is below the national average of -0.068. This prudent profile suggests that the University manages its collaborative processes with more rigor than the national standard. While multiple affiliations are often a legitimate result of researcher mobility or partnerships, this lower-than-average rate indicates that the institution is effectively avoiding practices that could be perceived as strategic attempts to inflate institutional credit or “affiliation shopping,” thereby maintaining clarity and transparency in its collaborative attributions.

Rate of Retracted Output

With a Z-score of -0.287, the institution's rate of retracted output is lower than the national figure of -0.191. This favorable comparison points to a prudent and effective approach to research oversight. It suggests that the University's quality control mechanisms prior to publication are functioning robustly, minimizing the incidence of systemic errors or potential malpractice. This low rate is a positive signal of a healthy integrity culture and strong methodological rigor, reinforcing the credibility of its scientific production.

Rate of Institutional Self-Citation

The University's Z-score for institutional self-citation is 2.449, a value that indicates high exposure to this risk and is significantly above the national average of 1.380. This suggests the institution is more prone than its national peers to operating within a 'scientific echo chamber.' While some self-citation reflects ongoing research, this disproportionately high rate warns of potential endogamous impact inflation, where the institution's academic influence may be oversized by internal dynamics rather than validated by the broader global community. This pattern merits a strategic review to encourage greater external engagement and ensure that research is subjected to sufficient external scrutiny.

Rate of Output in Discontinued Journals

The institution shows a Z-score of 1.021 in this indicator, revealing a higher exposure to this risk compared to the national average of 0.691. This finding constitutes a critical alert regarding due diligence in selecting dissemination channels. The data suggests that a portion of the University's scientific production is being channeled through media that do not meet international ethical or quality standards. This practice exposes the institution to severe reputational risks and indicates an urgent need to enhance information literacy among its researchers to avoid wasting resources on 'predatory' or low-quality publications.

Rate of Hyper-Authored Output

The University's Z-score of -0.868 is in the low-risk range, contrasting sharply with the medium-risk national average of 0.149. This demonstrates significant institutional resilience, as internal control mechanisms appear to successfully mitigate a systemic risk present in the country. The institution effectively distinguishes between necessary massive collaboration, typical in 'Big Science,' and problematic practices like author list inflation or 'honorary' authorships. This responsible approach reinforces individual accountability and transparency in its research contributions.

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

With a Z-score of -0.906, the institution shows a very low risk in this area, indicating a state of preventive isolation from the national trend, which has a medium-risk score of 0.831. This result is a strong indicator of scientific maturity and sustainability. It demonstrates that the University's scientific prestige is structural and endogenous, driven by research where it exercises intellectual leadership. Unlike the national pattern, which may suggest a dependency on external partners for impact, the University's excellence metrics appear to result from genuine internal capacity.

Rate of Hyperprolific Authors

The institution's Z-score of -1.216 is in the very low-risk category, aligning with and even improving upon the low-risk national standard of -0.770. This low-profile consistency signals a healthy academic environment. The absence of extreme individual publication volumes suggests a focus on quality over quantity, effectively mitigating risks such as coercive authorship or the assignment of credit without real participation. This practice supports the integrity of the scientific record by ensuring that authorship reflects meaningful intellectual contribution.

Rate of Output in Institutional Journals

The University has a Z-score of -0.268, a very low-risk value that signifies a deliberate disconnection from the medium-risk practice observed at the national level (Z-score of 1.113). This demonstrates a strong commitment to independent, external peer review. By avoiding over-reliance on in-house journals, the institution sidesteps potential conflicts of interest and academic endogamy. This strategy enhances the global visibility and competitive validation of its research, ensuring its work is assessed against international standards rather than being fast-tracked through internal channels.

Rate of Redundant Output

The institution's Z-score for redundant output is 1.911, indicating high exposure to this risk and placing it well above the national average of 0.832. This value is an alert for the practice of 'salami slicing,' where a coherent study may be fragmented into minimal publishable units to artificially inflate productivity metrics. This pattern suggests a need to review institutional incentives, as it not only distorts the scientific evidence available but also overburdens the peer-review system. It points to a dynamic where the prioritization of volume may be compromising the generation of significant new knowledge.