• geochemistry (e.g., mineral compositions) • ecology (e.g., relative abundances of species) • biochemistry (e.g., fatty acid proportions) • sociology (e.g., time budgets) • geography (e.g., proportions of land use) • political science (e.g., voting proportions, research on diversity) • marketing (e.g., brand shares) • genomics and微生物组研究(例如,分类单元的比例)
主要关键词