Figure 1.
Robustness against individual outliers during the construction of an ancestry space. Top row, the first two ancestry components for (A) PCA, (B) MDS, (C) UPCA and (D) SUGIBS using the CEU and TSI populations from the HapMap 3 project. Bottom row, the first two ancestry components for (E) PCA, (F) MDS, (G) UPCA and (H) SUGIBS using the CEU and TSI populations from the HapMap 3 project, but with randomly selected single individuals from four different and additional populations (CHB, GIH, MEX and YRI) as “outliers”.