K-means clustering on 20M PubMed papers shows biomedical research in the USA and China clusters around few stable centroids with minimal shift over three decades.
These were harvested from external sources including PubMed Central, Microsoft Academic Graph (MAG), Astrophysics Data System (ADS), and NIH grants
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Geographical Distribution of Biomedical Research in the USA and China
K-means clustering on 20M PubMed papers shows biomedical research in the USA and China clusters around few stable centroids with minimal shift over three decades.