Table 2. Comparison of accuracy values of the best classifier from different authors.

Authors	Classifiers	Diseases	Classes (2C/3C)	Accuracy/f1 Score
[13]	AdaBoost	Alzheimer’s	2 Class	79.6
		MCI		90.1
[14]	k-NN	Breast Cancer	2 Class	94.1
[15]	RFS-SVM	Diabetes	2 Class	98.92
[16]	Random Forest	Diabetes	2 Class	89.63
Our method	LDA	Alzheimer's	3 Class	89.83