Table 5 The results of the electricity of China by different grey forecasting models.
From: A new grey quadratic polynomial model and its application in the COVID-19 in China
year | values | GM(1,1) | DGM(1,1) | NGM(1,1,k,c) | GVM(1,1) | GMQP(1,1) |
|---|---|---|---|---|---|---|
2002 | 1654 | 1654.0000 | 1654.0000 | 1654.0000 | 1654.0000 | 1654.0000 |
2003 | 1910.5 | 2113.2755 | 2114.9688 | 1785.3338 | 574.2617 | 1908.7598 |
2004 | 2203.3 | 2325.4896 | 2327.5232 | 2084.6507 | 764.2721 | 2212.6902 |
2005 | 2500.2 | 2559.0142 | 2561.4393 | 2392.2518 | 1009.7824 | 2524.3652 |
2006 | 2865.7 | 2815.9893 | 2818.8640 | 2708.3663 | 1321.4159 | 2844.1501 |
2007 | 3281.5 | 3098.7696 | 3102.1598 | 3033.2299 | 1707.6737 | 3172.4276 |
2008 | 3495.7 | 3409.9466 | 3413.9269 | 3367.0848 | 2171.4243 | 3509.5984 |
2009 | 3714.6 | 3752.3719 | 3757.0266 | 3710.1797 | 2705.0199 | 3856.0821 |
2010 | 4192.3 | 4129.1834 | 4134.6078 | 4062.7704 | 3284.8796 | 4212.3181 |
2011 | 4692.8 | 4543.8341 | 4550.1359 | 4425.1198 | 3867.7067 | 4578.7665 |
2012 | 4959.1 | 5000.1238 | 5007.4246 | 4797.4979 | 4391.7255 | 4955.9092 |
2013 | 5322.3 | 5502.2339 | 5510.6708 | 5180.1823 | 4786.0089 | 5344.2508 |
