Table 2.

Computation time (in seconds) comparison for FANS, SVM, ROAD and penGAM. The parallel computing technique is applied. Standard errors are in the parentheses.

Ex(ρ)	FANS	FANS(para)	SVM	ROAD	penGAM
1(0)	12.0(2.6)	3.8(0.2)	59.4(12.8)	99.1(98.2)	243.7(151.8)
1(0.5)	12.7(2.1)	3.5(0.2)	81.3(19.2)	100.7(89.3)	325.8(194.3)
2(0.5)	16.0(3.1)	4.0(0.2)	77.6(18.1)	106.8(90.7)	978.0(685.7)
2(0.9)	22.0(4.6)	4.5(0.3)	75.7(17.8)	98.3(83.9)	3451.1(3040.2)
3(0)	12.1(2.1)	3.4(0.2)	152.1(27.4)	96.3(68.8)	254.6(130.0)
3(0.5)	11.9(2.0)	3.4(0.2)	342.1(58.0)	95.9(74.8)	298.7(167.4)
4	22.4(3.9)	6.6(0.4)	264.3(45.0)	75.1(54.0)	4811.9(3991.7)