FIGURE 2. Performance of assignment method.
From the following article:
Genes mirror geography within Europe
John Novembre, Toby Johnson, Katarzyna Bryc, Zoltán Kutalik, Adam R. Boyko, Adam Auton, Amit Indap, Karen S. King, Sven Bergmann, Matthew R. Nelson, Matthew Stephens & Carlos D. Bustamante
Nature 456, 98-101(6 November 2008)
doi:10.1038/nature07331
a, Predicted locations for each of 1,387 individuals based on leave-one-out cross validation and the continuous assignment method. Small coloured labels (for definitions, see Fig. 1 legend, except here CH-I, CH-F, and CH-G denote Swiss individuals who speak Italian, French, or German respectively) represent individual assignments. Coloured points denote the locations used to train the assignment method. b, Distribution of prediction accuracy by country. Distances are measured between the population assigned by the discrete assignment method and the geographic origin of the individual. The average is taken of the proportions across populations and each population is given equal weight. The panel shows results for populations with greater than six individuals; performance decreases for populations with smaller sample sizes (Supplementary Fig. 3).
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