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Table 3 Results of the analyses of simulated data.

From: Discriminant analysis of principal components: a new method for the analysis of genetically structured populations

  Island Model Hierarchical island model Hierarchical stepping stone Stepping stone
Number of populations (true K) 6 6 12 24
K inferred by DAPC 6 ([6,6]) 6 ([6,8]) 11 (8,12) 17.5 ([13,21])
K inferred by STRUCTURE 6 ([2,7]) 3 ([2,6]) 2 ([2,2]) 2 ([2,5])
% of correct assignment by DAPC 98.2% ([96.3%,99%]) 87.5% ([73.9%,91.2%]) 89.7% ([87.9%,97.2%]) 83.9% ([80%,88.7%])
% of correct assignment by STRUCTURE 98.6% ([98%,99.2%]) 93.1% ([89.2%,95.5%]) NA(1) NA(1)
  1. This table reports the results of analyses of simulated data (see Figure 2) by DAPC and STRUCTURE. K refers to the number of clusters. Inferred numbers of clusters are reported as medians computed from the 10 replicates, with the range of variation provided within parentheses. (1)NA is indicated when the percentage of successful assignment could not be computed with STRUCTURE. In these cases, the 'optimal' K was very different from the true K, resulting in meaningless assignments with numerous empty clusters and subsequently very low proportion of correct assignments.