$ϵ=1e-3$

$ϵ=1e-4$

$ϵ=1e-5$

${\sigma }^2$

aNCG-MC

NCG-MC

节省

aNCG-MC

NCG-MC

节省

aNCG-MC

NCG-MC

节省

0.01

200

600

66.67%

200

1597

87.48%

436

2643

83.50%

0.5

203

578

64.88%

297

1649

81.99%

1212

2980

59.33%