年份 | 真实值 | PSO-BP | BP | ||
万吨 | 拟合值 | 相对误差 | 拟合值 | 相对误差 | |
2017 | 96,076 | 97,036 | 1.00% | 97,790 | 1.78% |
2018 | 102,536 | 100,330 | 2.15% | 91,511 | 10.75% |
2019 | 106,417 | 100,630 | 5.44% | 94,370 | 11.32% |
2020 | 86,444 | 88,510 | 2.39% | 78,097 | 9.66% |
2021 | 96,990 | 88,890 | 8.35% | 84,504 | 12.87% |