A New Approach for Reconstruction of IMFs of Decomposition and Ensemble Model for Forecasting Crude Oil Prices
Table 7
values of correlation difference test of true correlation and among the components obtained from the reconstruction of IMFs.
Data
Scenario I
Scenario II
Scenario III
Scenario IV
500
0.500
0.760
0.490
0.550
—
0.900
0.850
0.350
0.240
0.730
0.950
0.400
0.350
0.240
0.840
0.990
0.400
<0.001
0.100
0.840
1000
0.500
0.520
0.690
0.360
—
0.900
0.590
0.750
0.210
0.640
0.950
0.590
0.810
0.150
0.520
0.990
<0.001
<0.001
0.048
0.520
2000
0.500
1.000
0.520
0.410
0.460
0.900
0.700
0.850
0.230
0.600
0.950
0.700
0.850
0.230
0.470
0.990
0.660
0.900
0.008
0.470
5000
0.500
<0.001
—
0.720
0.950
0.900
0.040
0.180
0.750
0.810
0.950
0.120
0.180
0.750
0.810
0.990
0.130
0.050
0.150
0.130
10,000
0.500
0.140
—
0.200
0.020
0.900
0.290
0.030
0.160
0.100
0.950
0.520
0.090
0.160
0.100
0.990
0.710
0.190
<0.001
0.001
The bold values indicate that they are statistically significant at 5% and communicated that the true correlation and among the components obtained from the reconstruction of IMFs are not independent.
