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Table 4

K-Means++ clustering metrics for different stellar groups and dimensions.

Var. Homogeneity Completeness V-Measure Silhouette
D σ σ σ σ
All 31 clusters (177 stars) 2 72.9% 0.72 0.01 0.61 0.01 0.66 0.01 0.40 0.01
3 82.2% 0.79 0.01 0.67 0.01 0.73 0.01 0.36 0.01
4 86.1% 0.79 0.01 0.68 0.01 0.73 0.01 0.32 0.01
5 88.8% 0.78 0.01 0.68 0.01 0.72 0.01 0.29 0.01
6 91.0% 0.78 0.01 0.68 0.01 0.73 0.01 0.27 0.01
7 93.1% 0.78 0.01 0.69 0.01 0.73 0.01 0.26 0.01
8 94.6% 0.78 0.01 0.69 0.01 0.73 0.01 0.24 0.01
9 95.6% 0.77 0.01 0.68 0.01 0.73 0.01 0.24 0.01
10 96.6% 0.77 0.01 0.68 0.01 0.73 0.01 0.23 0.01
11 97.5% 0.77 0.01 0.68 0.01 0.72 0.01 0.23 0.01
12 98.2% 0.77 0.01 0.68 0.01 0.72 0.01 0.22 0.01
13 98.8% 0.77 0.01 0.68 0.01 0.72 0.01 0.21 0.01
14 99.2% 0.77 0.01 0.69 0.01 0.72 0.01 0.21 0.01
15 99.6% 0.77 0.01 0.69 0.01 0.72 0.01 0.21 0.01
16 99.9% 0.77 0.01 0.69 0.01 0.73 0.01 0.21 0.01
17 100.0% 0.76 0.02 0.68 0.01 0.72 0.01 0.20 0.01
17* 100.0% 0.76 0.02 0.68 0.01 0.72 0.01 0.20 0.01
Dwarfs 11 clusters (60 stars) 2 62.9% 0.81 0.01 0.61 0.01 0.69 0.01 0.42 0.01
3 73.3% 0.75 0.01 0.57 0.01 0.65 0.01 0.38 0.01
4 79.9% 0.83 0.02 0.63 0.02 0.71 0.02 0.34 0.01
5 84.3% 0.83 0.02 0.63 0.02 0.72 0.02 0.32 0.01
6 88.1% 0.78 0.03 0.59 0.03 0.67 0.03 0.28 0.01
7 91.1% 0.78 0.03 0.60 0.02 0.68 0.03 0.24 0.01
8 93.6% 0.79 0.04 0.61 0.03 0.69 0.03 0.23 0.01
9 95.4% 0.79 0.04 0.61 0.03 0.69 0.03 0.21 0.01
10 96.7% 0.78 0.04 0.61 0.03 0.68 0.03 0.21 0.01
11 97.5% 0.77 0.04 0.60 0.03 0.67 0.03 0.20 0.01
12 98.2% 0.77 0.04 0.60 0.03 0.68 0.03 0.20 0.01
13 98.8% 0.77 0.04 0.60 0.03 0.68 0.04 0.19 0.01
14 99.2% 0.77 0.04 0.60 0.03 0.67 0.03 0.19 0.01
15 99.6% 0.78 0.04 0.61 0.03 0.68 0.04 0.19 0.01
16 99.9% 0.77 0.04 0.60 0.03 0.67 0.03 0.19 0.01
17 100.0% 0.77 0.04 0.60 0.03 0.67 0.03 0.18 0.01
17* 100.0% 0.77 0.04 0.60 0.03 0.67 0.03 0.18 0.01
Giants 26 clusters (117 stars) 2 71.1% 0.71 0.01 0.64 0.01 0.67 0.01 0.35 0.01
3 83.4% 0.79 0.01 0.71 0.01 0.75 0.01 0.33 0.01
4 87.7% 0.79 0.01 0.72 0.01 0.75 0.01 0.29 0.01
5 90.4% 0.81 0.01 0.74 0.01 0.78 0.01 0.28 0.02
6 92.6% 0.80 0.01 0.73 0.01 0.76 0.01 0.26 0.01
7 94.1% 0.80 0.01 0.74 0.01 0.77 0.01 0.24 0.01
8 95.4% 0.81 0.01 0.74 0.01 0.77 0.01 0.24 0.01
9 96.4% 0.81 0.01 0.74 0.01 0.77 0.01 0.23 0.01
10 97.2% 0.81 0.01 0.75 0.01 0.78 0.01 0.22 0.01
11 98.0% 0.81 0.01 0.75 0.02 0.78 0.01 0.22 0.01
12 98.6% 0.81 0.01 0.76 0.01 0.78 0.01 0.22 0.01
13 99.1% 0.81 0.02 0.76 0.01 0.78 0.01 0.21 0.01
14 99.5% 0.81 0.01 0.75 0.01 0.78 0.01 0.21 0.01
15 99.8% 0.81 0.01 0.75 0.02 0.78 0.01 0.21 0.01
16 99.9% 0.81 0.01 0.75 0.01 0.78 0.01 0.20 0.01
17 100.0% 0.81 0.01 0.76 0.01 0.78 0.01 0.21 0.01
17* 100.0% 0.81 0.01 0.76 0.01 0.78 0.01 0.21 0.01

Notes. The number of dimension (D) refers to the number of principal components used, except those marked with

(*)

where the non-transformed abundances were used. The covered variance (Var.) is presented in the second column. The V-Measure is calculated from the homogeneity and completeness values. All the parameters have an average value and a standard deviation that comes from 100 random iterations.

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