真实值

改进GM预测值

相对误差

状态区间

10.437

10.629

−1.84%

2

11.67

11.454

1.85%

4

12.311

12.020

2.36%

4

12.855

12.407

3.49%

4

13.067

12.681

2.95%

4

13.192

12.898

2.23%

4

12.824

13.102

−2.17%

2

12.693

13.323

−4.96%

1

12.885

13.580

−5.39%

1

13.357

13.879

−3.91%

1

13.856

14.217

−2.60%

2

14.42

14.575

−1.07%

2

14.981

14.923

0.39%

3

15.59

15.221

2.36%

4

16.049

15.415

3.95%

4