Research Article
Grey Relational Entropy Calculation and Fractional Prediction of Water and Economy in the Beijing-Tianjin-Hebei Region
Table 13
Results of particle swarm optimization in the Beijing-Tianjin-Hebei region.
| | Region | Evaluation index | Optimal order | MAPE (%) |
| | Beijing | Added value of primary industry | 0.533632 | 2.539866 | | Industrial added value | 0.21127 | 4.695975 | | Added value of construction industry | 0.021358 | 3.142181 | | Added value of tertiary industry | 0.54817 | 2.288903 | | Permanent residents | 1 | 0.895587 |
| | Tianjin | Added value of primary industry | 0.065177 | 2.975361 | | Industrial added value | 0.7779 | 2.963154 | | Added value of construction industry | 0.180058 | 4.997532 | | Added value of tertiary industry | 0.447971 | 3.738722 | | Permanent residents | 0.62491 | 2.018795 |
| | Hebei | Added value of primary industry | 0.566244 | 4.127879 | | Industrial added value | 0.116851 | 4.524057 | | Added value of construction industry | 0.886116 | 2.578524 | | Added value of tertiary industry | 0.551037 | 1.230012 | | Permanent residents | 0.552977 | 0.786934 |
|
|
