Research Article
Cost Index Predictions for Construction Engineering Based on LSTM Neural Networks
Table 2
Statistics of the primary selection index set.
| | Indicator name | Mean | Median | Maximum | Minimum | Std. Dev. |
| | Shenzhen engineering cost index | 136.181 | 139.260 | 177.460 | 100.000 | 22.005 | | Material cost index | 112.432 | 113.110 | 134.290 | 99.520 | 7.528 | | Floor space started | 10300.070 | 10297.610 | 22178.700 | 2580.100 | 4547.512 | | Crude oil price | 572.126 | 540.860 | 948.800 | 231.870 | 188.525 | | Loan rate | 5.700 | 6.000 | 7.470 | 4.350 | 0.918 | | Consumer price index | 124.960 | 127.260 | 144.080 | 100.000 | 11.624 | | Money supply | 92.915 | 89.557 | 173.986 | 31.671 | 43.158 | | Steel bar price | 4225.671 | 4250.000 | 6050.000 | 2400.000 | 868.063 | | Concrete price | 385.115 | 360.720 | 540.920 | 314.780 | 57.445 | | Cement price | 491.685 | 495.000 | 630.000 | 49.000 | 68.999 | | Medium sand price | 97.531 | 95.000 | 146.000 | 54.000 | 34.170 | | Gravel price | 111.252 | 120.000 | 160.000 | 60.000 | 26.289 | | Glass price | 38.979 | 35.000 | 52.000 | 30.000 | 7.864 | | Wood price | 1169.238 | 1200.000 | 1499.000 | 1000.000 | 139.684 | | Block price | 279.203 | 290.000 | 290.000 | 233.000 | 14.054 | | Diesel price | 7.325 | 7.350 | 9.360 | 5.470 | 1.110 | | Gross domestic product | 14125.420 | 14035.170 | 25269.960 | 6015.410 | 5116.898 |
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