Table 2. Accuracy of ClusterCentroids parametrized with near-optimal number of prototypes.

Noise (σ)	Out-of-band points (%)	Accuracy (4 classes)	Accuracy (6 classes)	Accuracy (8 classes)	Accuracy (10 classes)	Accuracy (12 classes)
0.05	0	0.975	0.98625	0.9775	0.9775	0.975
0.1	1	0.94375	0.94	0.94	0.9425	0.93125
0.2	21	0.77375	0.77625	0.76375	0.79375	0.81375
0.4	53	0.53	0.4925	0.5325	0.58375	0.60875