Data Sources and Metrics
The 5th edition of the Research.com Best Engineering and Technology Scientists in India Ranking was primarily developed using comprehensive bibliometric data sourced from OpenAlex and CrossRef, supplemented by multiple other reputable data repositories. These sources represent the most prominent and well-established bibliometric databases accessible to the research community, ensuring extensive coverage and data reliability. The bibliometric data used to calculate the citation-based metrics for this ranking were collected on January 12, 2026.
A researcher’s position in the ranking is determined by their D-index (Discipline H-index), a specialized metric that reflects the citation impact of a scientist within the examined discipline only. The D-index differs from the general H-index by exclusively including papers and citations pertinent to the field of Engineering and Technology, providing a more focused and meaningful measure of discipline-specific scholarly influence.
Scope of Research and Inclusion Criteria
The ranking examined 279,971 scientist profiles aggregated from a variety of bibliometric data sources across all academic disciplines. Among these, 192 scientists specifically focused on Engineering and Technology were rigorously evaluated. To qualify for inclusion in this ranking, a scientist’s D-index needed to be at least 30, and a majority of their tier publications had to be categorized within the domain of Engineering and Technology.
In addition to bibliometric criteria, scientists’ awards and achievements within Engineering and Technology were also considered to enhance the accuracy and credibility of the ranking. The D-index thresholds are dynamically set in increments of 10, corresponding to the total number of scholars estimated for each discipline. This approach ensures that the top 1% of leading scholars are consistently represented in the list. Furthermore, to guarantee domain specificity, the proximity between a scientist’s general H-index and their D-index was required to be 30% or less.
Verification and Quality Assurance
The research team acknowledges that raw bibliometric data cannot serve as an absolute measure for evaluating scholarly output. Therefore, all scientist profiles incorporated in the ranking underwent manual verification and were cross-correlated against publications in a broad array of trustworthy academic sources. Although the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s position in the Research.com ranking, it constitutes a valuable secondary indicator of a scientist’s contribution to their specific field.
Positions in the ranking are calculated based on each researcher’s D-index using information aggregated from OpenAlex and CrossRef. These verified and meticulously curated data sources underpin the integrity and credibility of the ranking. For more detailed information about the methodology employed, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
Research.com's overarching mission in developing this ranking is to motivate scientists, companies, and policymakers worldwide to closely examine the trajectories of leading experts within their respective domains. By providing a transparent and rigorously constructed platform, we aim to enable the entire scientific community to discover and recognize the foremost experts in specific areas of study, across various countries, and even within individual research institutions.
Through this initiative, Research.com strives to foster a globally informed and interconnected research ecosystem, supporting decision-making processes in academia, industry, and governance by highlighting excellence and emerging leadership in Engineering and Technology research.
