Research Article
Prediction of Water Consumption in Hospitals Based on a Modified Grey GM (0, 1∣sin) Model of Oscillation Sequence: The Example of Wuhan City
Table 2
The predicted values by different models and their relative error.
| Time ID | Actual value | GM (0, 1∣sin) model | Modified GM (0, 1∣sin) model | Predicted values | Relative error (%) | Predicted values | Relative error (%) |
| 1 | 264.3 | 264.3 | 0.00 | 264.3 | 0.00 | 2 | 327.1 | 295.4 | −9.69 | 302.1 | −7.64 | 3 | 317.6 | 280.8 | −11.59 | 284.4 | −10.45 | 4 | 286.2 | 293.6 | 2.59 | 300.1 | 4.86 | 5 | 292.2 | 300.4 | 2.81 | 308.5 | 5.58 | 6 | 300.5 | 291.4 | −3.03 | 297.6 | −0.97 | 7 | 324.4 | 320.1 | −1.33 | 333.1 | 2.68 | 8 | 300.1 | 291.6 | −2.83 | 298.0 | −0.70 | 9 | 360.0 | 336.8 | −6.44 | 354.3 | −1.58 | 10 | 328.5 | 296.6 | −9.71 | 304.4 | −7.34 | 11 | 368.9 | 347.8 | −5.72 | 368.5 | −0.11 | 12 | 307.6 | 307.6 | 0.00 | 318.2 | 3.45 |
| MAPE (%) | 4.64 | 3.77 |
| | 0.63 | 0.68 |
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