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Table 5

Constructed PI results for three datasets of LUBE methods

Ground-based data
PERSIANN-CDR data
CMAP data
ModelPICPNMPIWPICPNMPIWPICPNMPIW
SPI 1       
 GPR 0.77 2.49 0.75 2.57 0.78 2.55 
 EEMD–GPR 0.91 2.21 0.90 2.22 0.89 2.23 
 PE–EEMD–GPR 0.94 1.78 0.94 1.82 0.93 1.64 
 VMD–GPR 0.94 1.79 0.95 1.68 0.95 1.08 
 PE–VMD–GPR 0.96 0.80 0.95 1.03 0.96 1.02 
SPI 9       
 GPR 0.82 0.71 0.84 0.81 0.86 0.77 
 EEMD–GPR 0.93 0.69 0.91 0.79 0.91 0.73 
 PE–EEMD–GPR 0.96 0.55 0.97 0.51 0.96 0.54 
 VMD–GPR 0.96 0.62 0.93 0.65 0.95 0.63 
 PE–VMD–GPR 0.98 0.56 0.95 0.54 0.98 0.55 
SPI 24       
 GPR 0.88 0.64 0.86 0.65 0.90 0.67 
 EEMD–GPR 0.95 0.55 0.94 0.59 0.92 0.61 
 PE–EEMD–GPR 0.96 0.49 0.94 0.48 0.96 0.49 
 VMD–GPR 0.97 0.48 0.95 0.52 0.97 0.51 
 PE–VMD–GPR 0.99 0.48 0.97 0.51 0.98 0.47 
Ground-based data
PERSIANN-CDR data
CMAP data
ModelPICPNMPIWPICPNMPIWPICPNMPIW
SPI 1       
 GPR 0.77 2.49 0.75 2.57 0.78 2.55 
 EEMD–GPR 0.91 2.21 0.90 2.22 0.89 2.23 
 PE–EEMD–GPR 0.94 1.78 0.94 1.82 0.93 1.64 
 VMD–GPR 0.94 1.79 0.95 1.68 0.95 1.08 
 PE–VMD–GPR 0.96 0.80 0.95 1.03 0.96 1.02 
SPI 9       
 GPR 0.82 0.71 0.84 0.81 0.86 0.77 
 EEMD–GPR 0.93 0.69 0.91 0.79 0.91 0.73 
 PE–EEMD–GPR 0.96 0.55 0.97 0.51 0.96 0.54 
 VMD–GPR 0.96 0.62 0.93 0.65 0.95 0.63 
 PE–VMD–GPR 0.98 0.56 0.95 0.54 0.98 0.55 
SPI 24       
 GPR 0.88 0.64 0.86 0.65 0.90 0.67 
 EEMD–GPR 0.95 0.55 0.94 0.59 0.92 0.61 
 PE–EEMD–GPR 0.96 0.49 0.94 0.48 0.96 0.49 
 VMD–GPR 0.97 0.48 0.95 0.52 0.97 0.51 
 PE–VMD–GPR 0.99 0.48 0.97 0.51 0.98 0.47 
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