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.
Geographical Distribution of Biomedical Research in the USA … WOSP 2017, June 19, 2017, Toronto, ON, Canada 5 Fig
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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.