Research Article
[Retracted] A Study of Regional Economic Disparities and Coordinated Development Based on Improving Grey Model Combinations
Table 3
Comparison of forecast results for 2018 under the four combined models of the CPI dataset.
| | Model | January | February | March | April | May | June | July | August | September | October |
| | True value | 101.5 | 102.3 | 102.4 | 101.7 | 10.2.1 | 101.8 | 101.6 | 102.6 | 102.3 | 102.5 | | Traditional GM | 101.8 | 101.7 | 101.7 | 101.8 | 101.7 | 101.7 | 101.7 | 101.6 | 101.6 | 101.6 | | Unbiased GM | 102 | 102.1 | 102.3 | 102.2 | 102.5 | 102.3 | 102.3 | 102.2 | 102.2 | 102.1 | | Improved GM | 102.2 | 102.2 | 102.3 | 102.2 | 102.5 | 102.2 | 102.1 | 102.2 | 102.4 | 102.6 | | Combined GM | 101.8 | 101.7 | 102.4 | 101.8 | 101.2 | 101.4 | 101.5 | 101.6 | 101.7 | 101.7 |
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