Research Article
International Gold Price Forecast Based on CEEMDAN and Support Vector Regression with Grey Wolf Algorithm
Table 2
The summary of the daily international gold price data set.
| Data set | Data size | Data period | Statistical descriptions | Mean | Variance | Range | Skewness | Kurtosis | Coefficient of variation |
| Full set | 5950 | 01/03/2000–09/03/2021 | 1040.18 | 269829.34 | 1811.20 | −0.0933 | 1.7389 | 0.4994 | Training set | 5655 | 01/03/2000–09/03/2021 | 1000.17 | 251272.09 | 1811.20 | −0.0625 | 1.7461 | 0.5012 | Test set | 295 | 09/06/2021–21/10/2022 | 1807.14 | 6612.26 | 407.35 | 0.1811 | 2.7672 | 0.0450 |
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