方法

误差

CPU时间(s)

n = 10

GD

1.27 × 10−11

0.0635

SGD

4.77 × 10−12

0.1044

MB-SGD

9.43 × 10−12

0.2278

n = 500

GD

6.35 × 10−10

9.7616

SGD

1.93 × 10−9

3.9142

MB-SGD

2.82 × 10−11

7.5040

n = 2000

GD

2.24 × 10−9

178.2139

SGD

6.99 × 10−9

38.1682

MB-SGD

1.48 × 10−10

124.7364