Data Sources Used for the Research.com Best Scientists in Japan Ranking
The 4th edition of the Research.com Best Scientists in Japan Ranking draws on data from leading bibliometric resources, primarily OpenAlex and CrossRef, supplemented by several other authoritative data sources. The comprehensive bibliometric data used to formulate the citation-based metrics were systematically collected as of 2024-11-27. A scientist’s placement in the ranking is established primarily based on their H-index, a well-recognized metric reflecting both the productivity and citation impact of their published scholarly work.
Scope of Research Covered by the Ranking
The 2024 ranking encompasses an extensive examination of 279,971 scientist profiles sourced from a diverse array of bibliometric databases. It covers all major scientific disciplines, ensuring representation across the full breadth of contemporary research fields. The minimum qualifying criteria for inclusion—specifically the H-index—were set individually for each area of specialization, but typically required a threshold of either 30 or 40 to ensure high standards of scholarly excellence. In addition to the H-index, scientists' professional achievements and notable awards in their domains were also factored in during the selection process. Out of all profiles assessed, only the top 1000 scientists with the highest H-index are featured in this final ranking, spotlighting individuals at the forefront of scientific advancement in Japan.
Verification and Additional Evaluation Practices
We recognize that bibliometric metrics alone cannot fully capture the breadth and quality of individual scholarly contributions. Therefore, the ranking process includes meticulous manual verification of all scientist profiles, with each entry thoroughly cross-referenced against publications in a wide range of reputable sources. While the number of articles published in renowned journals and top-tier conference proceedings is not a formal determinant in the ranking, it is acknowledged as a valuable secondary indicator of robust research activity within a given discipline.
It is important to emphasize that the final positioning of each scientist is determined exclusively by their H-index, as measured by synthesized data from OpenAlex and CrossRef—two of the most widely respected and utilized bibliometric databases in the global research community. We encourage those interested in the detailed procedures and selection protocols to consult our methodology page.
Research.com Agenda and Goals
The primary aim behind the creation of the Best Scientists in Japan Ranking is to inspire scientists, business leaders, and academic institutions worldwide. We seek to guide the discovery of where the world’s top experts are concentrating their efforts and to open new avenues for the global scientific community to identify leaders in popular disciplines, both within national borders and international research institutions. By providing transparent, data-driven insights, we strive to celebrate outstanding scholarly achievement and foster greater collaboration and innovation across all scientific fields.
