Table 2.

RASE of $\widehat{\alpha }\left(u\right)$ under different methods.

	Method	n = 150	n = 200	n = 300
ρ = 0.75	SCAD	0.1920	0.2051	0.1054
	LASSO	0.0999	0.0840	0.1064
ρ = 0.25	SCAD	0.2449	0.2460	0.0694
	LASSO	0.1399	0.1205	0.1033