Research Article
A Combined Prediction Model for Hog Futures Prices Based on WOA-LightGBM-CEEMDAN
Table 7
Fitting error analysis of the four models.
| Date | Real | CEEMDAN | EEMD | SVR | WOA-LightGBM | Fitted value | Error | Fitted value | Error | Fitted value | Error | Fitted value | Error |
| 2021/5/28 | 22485 | 22489.67 | −4.67 | 22484.88 | 0.12 | 22530.28 | −45.28 | 22485 | 0 | 2021/5/31 | 22245 | 22242.76 | 2.24 | 22237.85 | 7.15 | 22180.4 | 64.60 | 22140.26 | 104.74 | 2021/6/1 | 22025 | 22015.68 | 9.32 | 22008.5 | 16.50 | 22011.98 | 13.02 | 21948.65 | 76.35 | 2021/6/2 | 21525 | 21523.93 | 1.07 | 21518.05 | 6.95 | 21463.73 | 61.27 | 21412.14 | 112.86 | 2021/6/3 | 20640 | 20642.38 | −2.38 | 20637.71 | 2.29 | 20630.58 | 9.42 | 20563.5 | 76.50 | 2021/6/4 | 19870 | 19883.66 | −13.66 | 19878.53 | −8.53 | 19960.14 | −90.14 | 19908.5 | −38.50 | 2021/6/7 | 20025 | 20024.6 | 0.40 | 20017.03 | 7.97 | 19974.63 | 50.37 | 19929.61 | 95.39 | 2021/6/8 | 19770 | 19767.81 | 2.19 | 19759.64 | 10.36 | 19752.83 | 17.17 | 19693.65 | 76.35 | 2021/6/9 | 20215 | 20211.61 | 3.39 | 20201.77 | 13.23 | 20148.2 | 66.80 | 20096.61 | 118.39 | 2021/6/10 | 19935 | 19932.91 | 2.09 | 19921.95 | 13.05 | 19932.15 | 2.86 | 19862.48 | 72.52 | … | … | … | … | … | … | … | … | … | … | 2021/7/8 | 18865 | 18862.46 | 2.54 | 18849.55 | 15.45 | 18858.18 | 6.82 | 18788.5 | 76.50 | 2021/7/9 | 19165 | 19164.54 | 0.46 | 19151.03 | 13.97 | 19131.55 | 33.45 | 19079.9 | 85.10 | 2021/7/12 | 18760 | 18758.54 | 1.46 | 18748.36 | 11.64 | 18717.02 | 42.98 | 18662.11 | 97.89 | 2021/7/13 | 18270 | 18284.68 | −14.68 | 18272.09 | −2.09 | 18364.79 | −94.79 | 18304.53 | −34.53 | 2021/7/14 | 18210 | 18225.68 | −15.68 | 18216.4 | −6.40 | 18292.82 | −82.82 | 18248.5 | −38.50 | 2021/7/15 | 18120 | 18137.65 | −17.65 | 18128.5 | −8.50 | 18199.54 | −79.53 | 18154.53 | −34.53 | 2021/7/16 | 18400 | 18415.71 | −15.71 | 18408.92 | −8.92 | 18407.64 | −7.64 | 18363.31 | 36.69 | 2021/7/19 | 18785 | 18793.16 | −8.16 | 18786.45 | −1.45 | 18743.8 | 41.20 | 18702.32 | 82.68 | 2021/7/20 | 18840 | 18862.93 | −22.93 | 18855.92 | −15.92 | 18928.48 | −88.48 | 18874.53 | −34.53 | 2021/7/21 | 18740 | 18743.18 | −3.18 | 18735.75 | 4.25 | 18691.71 | 48.29 | 18647.38 | 92.62 | Average error | −1.35 | 8.59 | 16.28 | 71.65 |
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