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Table 3 Posterior probabilities of superpopulation memberships in 6 test populations obtained by a GTM model trained with all superpopulations

From: Probabilistic ancestry maps: a method to assess and visualize population substructures in genetics

Population (pop) P(AFR|pop) P(AMR|pop) P(EAS|pop) P(EUR|pop) P(SAS|pop)
ASW 0.55 0.45 0 0 0
ACB 0.89 0.11 0 0 0
MXL 0 0.98 0 0.02 0
GIH 0 0 0 0 1
STU 0 0 0 0 1
ITU 0 0 0 0 1
  1. NB: GTM classification models are restricted by an applicability domain defined by the training set. Here, the training set contains twenty 1000 Genomes Project, excluding [ASW, ACB, MXL, GIH, STU, ITU]. These posterior probabilities should be considered as a similarity measure between test populations and populations used to build the map, and not as an absolute measure of population admixture. Abbreviations: ASW = Americans of African Ancestry in SW USA; ACB = African Caribbeans in Barbados; MXL = Mexican Ancestry from Los Angeles USA; GIH = Gujarati Indian from Houston, Texas; STU = Sri Lankan Tamil from the UK; ITU = Indian Telugu from the UK; EUR = Europeans; EAS = East Asians; AMR = Admixed Americans; SAS = South Asians