Data Sources and Citation Metrics
The 5th edition of the Research.com Best Microbiology Scientists in Saudi Arabia Ranking is primarily based on data obtained from leading bibliometric databases, namely OpenAlex and CrossRef, supplemented by multiple other reputable data sources. Bibliometric data, including publications and citation counts, were collected as of January 12, 2026, to provide a comprehensive and up-to-date foundation for the ranking.
A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a refined bibliometric metric that focuses exclusively on papers and citation metrics within the examined discipline—in this case, Microbiology. This discipline-specific approach ensures that only research contributions relevant to the field are considered in assessing scholarly impact.
Scope of Research and Inclusion Criteria
The ranking analysis encompassed 187,659 scientist profiles aggregated from a broad spectrum of bibliometric data sources, spanning all academic disciplines. Within this extensive dataset, 4 distinguished scientists specializing in Microbiology were identified for evaluation.
To qualify for inclusion, each scientist was required to meet a minimum D-index threshold of 40, with the majority of their tier publications specifically related to Microbiology. Additionally, notable awards and achievements in the field were factored into the evaluation process. The D-index threshold is calibrated in increments of 10 relative to the estimated total number of scholars in each discipline, ensuring the inclusion of the top 1% of leading researchers.
Furthermore, to maintain a meaningful correlation between general scholarly influence and discipline-specific impact, a proximity criterion was applied whereby the difference between a scientist’s overall H-index and D-index does not exceed 30%.
Verification and Methodological Rigor
Understanding that raw bibliometric data alone cannot fully capture the multifaceted contributions of researchers, the team behind this ranking conducted a thorough manual verification of all scientist profiles. This process involved cross-correlating publication records with a diverse range of trustworthy sources to validate the authenticity and relevance of research outputs.
Although the number of papers published in prominent journals and conference proceedings does not directly affect the ranking position, it serves as a valuable secondary indicator of a scientist's influence and prominence within the field of Microbiology.
Consistent with methodological best practices, the ranking is established using the D-index calculated from bibliometric data derived specifically from OpenAlex and CrossRef—two of the most authoritative and widely recognized bibliometric databases available to the research community.
For comprehensive details regarding the methodology employed in compiling this ranking, we encourage readers to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire researchers, academic institutions, companies, and policymakers worldwide to gain clear insights into the trajectories and accomplishments of leading experts. This ranking serves as a transparent and reliable resource for the global scientific community to identify and recognize preeminent researchers in specific disciplines, within national contexts such as Saudi Arabia, and across various research institutions.
Through meticulous data collection, rigorous validation processes, and a commitment to objectivity, we strive to foster a deeper understanding of scientific leadership and promote continued excellence in research worldwide.
