基于等维动态马尔科夫SCGM(1,1)C模型的黄金价格预测
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王梅,陈建宏,杨珊
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Gold Price Forecast Based on the Equal Dimensional Dynamic Markov SCGM(1,1)C Model
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Mei WANG,Jianhong CHEN,Shan YANG
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表4 灰色模型黄金价格预测结果
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Table 4 Prediction results of gold price by Grey model
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时间 | 黄金价格/(美元·盎司-1) | 原始值/预测值 | 相对误差/% |
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原始值 | 预测值 |
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2018-01 | 1 345.1 | 1 281.3 | 1.0497 | -4.7 | 2018-02 | 1 317.8 | 1 277.9 | 1.0312 | -3.0 | 2018-03 | 1 323.8 | 1 274.5 | 1.0386 | -3.7 | 2018-04 | 1 313.2 | 1 271.1 | 1.0330 | -3.2 | 2018-05 | 1 305.3 | 1 267.7 | 1.0296 | -2.9 | 2018-06 | 1 250.4 | 1 264.4 | 0.9889 | 1.1 | 2018-07 | 1 220.9 | 1 261.0 | 0.9681 | 3.3 | 2018-08 | 1 202.4 | 1 257.6 | 0.9561 | 4.6 | 2018-09 | 1 187.2 | 1 254.3 | 0.9465 | 5.7 | 2018-10 | 1 215.0 | 1 251.0 | 0.9712 | 3.0 | 2018-11 | 1 217.6 | 1 247.6 | 0.9759 | 2.5 | 2018-12 | 1 279.0 | 1 244.3 | 1.0278 | -2.7 | 2019-01 | 1 323.2 | 1 241.0 | 1.0662 | -6.2 | 2019-02 | 1 319.2 | 1 237.3 | 1.0661 | -6.1 | 2019-03 | 1 295.4 | 1 234.4 | 1.0494 | -4.7 | 2019-04 | 1 282.3 | 1 231.1 | 1.0415 | -3.9 | 2019-05 | - | 1 250.3825 | - | - |
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