A scientist’s position within the ranking is determined by their D-index (Discipline H-index), a measure that reflects citation impact strictly within the examined discipline—in this case, Microbiology. The D-index effectively isolates a researcher’s influence in their specialized field by considering only relevant publications and corresponding citations.
Scope of Research and Qualification Criteria
The ranking is informed by a thorough examination of 187,659 scientist profiles collated from various bibliometric databases spanning all disciplines, of which 5,510 scientists are identified specifically in the field of Microbiology. To qualify for inclusion in the microbiology ranking, a scientist must have a minimum D-index of 40, ensuring recognition of established impact within the field.
Additionally, a majority of the scientist’s tier publications must be in Microbiology, reflecting a focused and consistent contribution to the discipline. Awards and distinguished achievements in the field are also considered to provide a more nuanced measure of professional standing and recognition.
The threshold D-index level for top researchers is determined incrementally in steps of 10, proportional to the estimated total number of scholars in each discipline. This scalable approach guarantees that the top 1% of leading scholars are incorporated into the ranking. Furthermore, to ensure alignment between general research impact and disciplinary focus, scientists must exhibit a proximity of 30% or less between their general H-index and their D-index.
Verification and Validation Practices
At Research.com, we recognize that raw bibliometric data alone cannot serve as an absolute measure of scholarly output or impact. Hence, all scientist profiles included in the ranking undergo manual verification by expert researchers. These profiles are cross-correlated against a wide array of trustworthy sources to validate publication records and ensure accuracy.
While the number of papers published in prominent journals and conference proceedings does not influence the researcher’s position in the ranking, it is regarded as a valuable secondary indicator of a scientist’s contribution to their specific research area.
The ranking position of each researcher is firmly based on their D-index, as computed from data acquired through OpenAlex and CrossRef — the foremost and most authoritative bibliometric databases accessible to the scientific community.
For a comprehensive understanding of the data collection and evaluation methodology employed, we invite you to visit our methodology page.
Research.com’s Mission and Vision
Research.com is committed to fostering a global ecosystem where researchers, companies, and policymakers can closely examine trends in scientific leadership and innovation. By identifying and highlighting leading experts within specific fields, countries, and institutions, our ranking serves as an authoritative resource for the scientific community.
Our mission is to motivate the worldwide research community to recognize where pioneering work is advancing and to provide transparent, reliable, and timely information about top scholars in diverse disciplines. Through meticulous data integration, verification, and expert assessment, we aim to build credibility and support informed decisions across academia, industry, and government sectors.
