Data Sources and Citation Metrics
The 5th edition of the Research.com Best Chemistry Scientists in Poland Ranking is based primarily on bibliometric data aggregated from OpenAlex and CrossRef, supplemented by multiple other authoritative data sources. The citation data utilized to devise the ranking’s metrics were collected on January 12, 2026, ensuring the information reflects the most recent and comprehensive research outputs available at the time of compilation. A key metric determining a scientist’s position in this ranking is the Discipline H-index (D-index), which considers only publications and citation records that pertain specifically to the chemistry discipline under examination.
Scope and Inclusion Criteria
The ranking is derived from an extensive evaluation of 279,971 scientist profiles identified across a broad array of bibliometric databases and covering all academic disciplines. Within this corpus, 90 scientists specialized in Chemistry were identified and examined for inclusion in the ranking.
To qualify for consideration, a researcher’s D-index was required to be at least 40, combined with the criterion that a majority of their tier publications must be in the area of Chemistry. Additionally, a scientist’s awards and notable achievements in the field of Chemistry were carefully considered as supplementary factors in the evaluation. The threshold for the D-index is dynamically set in increments of 10 based on the estimated total number of scholars within each discipline, thereby ensuring that the top 1% of leading researchers are reliably included. Furthermore, to ensure disciplinary focus, eligible scientists generally exhibit a proximity of 30% or less between their overall general H-index and their D-index.
Verification and Methodological Rigor
Recognizing that raw bibliometric data alone cannot provide an absolute evaluation of scientific output, the Research.com team employed rigorous manual verification procedures. All scientist profiles were cross-correlated against publications indexed in a wide spectrum of reputable sources to affirm the accuracy and relevance of the data.
While not directly impacting the position within the ranking, the number of papers published in prominent journals and conference proceedings is considered an important complementary indicator of a researcher’s impact within their specialty area. The ranking position itself is determined primarily by the D-index computed from the most reputable and expansive bibliometric databases available—OpenAlex and CrossRef.
For a detailed explanation of the metrics, data sources, and verification processes utilized to create this ranking, we encourage readers to consult our methodology page.
Research.com’s Mission
Research.com’s overarching mission in publishing this ranking is to motivate researchers, companies, and policymakers worldwide to track the directions in which leading experts are advancing their fields. We aim to provide an authoritative platform that allows the global scientific community to identify and engage with the foremost experts across specific disciplines, within various countries, and among diverse research institutions. This initiative is part of our broader commitment to promote transparency, recognition, and collaboration within the scientific ecosystem.