Table 5.

Overall comparison using average evaluation metrics for the proposed method using the alpha trim approach and two related methods. Row A refers to an unsupervised evaluation, and row B refers to the supervised evaluation.

Original MCET-Gaussian distribution
Dermoscopic skin lesion		MRI brain tumor	MRI Alzheimer's
A	0.8703	0.8406	0.8841
B	0.8923	0.8210	—
MCET-lognormal distribution
Dermoscopic skin lesion		MRI brain tumor	MRI Alzheimer's
A	0.8802	0.8693	0.8874
B	0.8817	0.8807	—
Overall increase rate of accuracy over Gaussian = 2.1%
Proposed MCET-alpha trim d/2 = 55
Dermoscopic skin lesion		MRI brain tumor	MRI Alzheimer's
A	0.8917	0.8789	0.8968
B	0.9208	0.8839	—
Overall increase rate of accuracy over Gaussian = 3.7%
Overall increase rate of accuracy over lognormal = 1.6%
Proposed MCET-alpha trim d/2 = 50
Dermoscopic skin lesion		MRI brain tumor	MRI Alzheimer's
A	0.9102	0.8779	0.90426
B	0.8876	0.8860	—
Overall increase rate of accuracy over Gaussian = 3.65%
Overall increase rate of accuracy over lognormal = 1.5%
Proposed MCET-alpha trim d/2 = 30
Dermoscopic skin lesion		MRI brain tumor	MRI Alzheimer's
A	0.8739	0.8942	0.8928
B	0.9059	0.9165	—
Overall increase rate of accuracy over Gaussian = 4.0%
Overall increase rate of accuracy over lognormal = 1.9%