Mexican Hat Wavelet Kernel ELM for Multiclass Classification

Table 13

Performance comparison with statistical test on Letter.

Data set (training number, category)		MHW-KELM	Gauss-KELM	Poly-KELM	Original ELM	SCG-BP
Letter (2000, 26)	Mean	72.62	86.80	68.79	15.51	<10
	Std.	±13.26	±4.32	±3.88	±5.48
	value	0.11	1.00	0.01	2.43e − 03	0
	Time	1.668	1.833	2.132	4.559	7.270