Table 1.

Performance comparison of the proposed symbolic modeling approach with SGEF in different mask window size and integer polynomial order on AR, ORL, LFW, and VISA Face datasets

Mask size	Computation time in seconds				Recognition accuracy at α = 2 in %
	AR	ORL	LFW	VISA	AR	ORL	LFW	VISA Face
F = 3 × 3	0.035	0.389	0.224	0.619	95.75	99.75	97.22	96.39
F = 5 × 5	0.042	0.392	0.231	0.623	95.24	100	96.77	96.52
F = 7 × 7	0.044	0.411	0.248	0.629	93.00	100	96.13	96.19
F = 11 × 11	0.059	0.458	0.310	0.699	92.75	100	94.23	96.32
F = 13 × 13	0.075	0.460	0.323	0.734	92.83	100	94.55	96.23

Bold values represents the best recognition rate and computation time for 3 × 3 mask size