Research Article
An Improved Metabolism Grey Model for Predicting Small Samples with a Singular Datum and Its Application to Sulfur Dioxide Emissions in China
Table 6
Fitting and prediction results based on the IMGM
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| | Year | Actual data | Modeling data | Fitting and prediction values | Residual errors | Relative errors (%) |
| | 2007 | 2468.1 | 2468.1 | 2468.1 | 0 | 0 | | 2008 | 2321.2 | 2321.2 | 2293.4 | −27.77 | −1.1966 | | 2009 | 2214.4 | 2214.4 | 2247.8 | 33.42 | 1.5095 | | 2010 | 2185.1 | 2185.1 | 2203.1 | 18.03 | 0.8254 | | 2011 | 2217.9 | 2183.348 | 2159.3 | −24.01 | −1.0998 | | 2012 | 2117.6 | — | 2116.4 | −1.19 | −0.0565 | | 2013 | 2044.0 | — | 2074.3 | 30.32 | 1.4835 |
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