From: RETRACTED ARTICLE: Forecasting algorithm of tourism service trade based on PSO-optimized hybrid RVM model
Variable
Standard error
T value adjoint probability
lnUR
0.219835
0.1330
lnQTA
0.108696
0.0222
lnQL
0.055476
0.6259
lnER
0.684722
0.0000
lnGDP
0.153864
lnWGDP
0.345067
C
2.800841