Table 1.

Details of dataset partitioning.

Type	Three-classification datasets			Four-classification datasets
	Original set	Train set	Val set	Original set	Train set	Val set
Glioma	1426	1141	285	926	740	186
Meningioma	708	567	141	940	752	188
Pituitary	930	744	186	901	720	181
No tumor	-	-	-	497	397	100
Total	3064	2452	612	3264	2609	655