Table 8 Performance of the proposed AI models applied to Dataset 1 using the 10-fold cross-validation technique.

From: Predicting tourism growth in Saudi Arabia with machine learning models for vision 2030 perspective

Modal name

Train set

Test set

MAE (%) ± STD

MSE (%) ± STD

R2 score (%) ± STD

MAE (%) ± STD

MSE (%) ± STD

R2 score (%) ± STD

GB

0.00006 ± 0.00008

0.00000 ±

0.00000

0.99999 ± 0.00001

0.00662 ± 0.00530

0.00097 ± 0.00139

0.90809 ± 0.12447

RF

0.00056 ± 0.00026

0.00003 ±

0.00004

0.99549 ± 0.00500

0.00755 ± 0.00573

0.00116 ± 0.00152

0.89595 ± 0.1414

HGB

0.00667 ± 0.00329

0.00062 ± 0.00052

0.83340 ± 0.12453

0.02315 ± 0.01142

0.00482 ± 0.00391

0.65269 ± 0.1746

ETR

0.00021 ± 0.00010

0.00002 ± 0.00004

0.98994 ± 0.00474

0.00585 ± 0.00541

0.00083 ± 0.00137

0.92041 ± 0.13056

BR

0.00069 ± 0.00030

0.00045 ± 0.00016

0.99543 ± 0.00389

0.00800 ± 0.00596

0.00119 ± 0.00152

0.89882 ± 0.13756

ABR

0.00372 ± 0.00278

0.00082 ± 0.00056

0.99534 ± 0.00249

0.01030 ± 0.00630

0.00121 ± 0.00150

0.89823 ± 0.12741

DT

0.00022 ± 0.00011

0.00001 ± 0.00002

0.99811 ± 0.00362

0.00731 ± 0.00528

0.00114 ± 0.00144

0.90164 ± 0.12139

Stacking1

0.00128 ± 0.00064

0.00009 ± 0.00011

0.96709 ± 0.04535

0.00980 ± 0.00606

0.00165 ± 0.00169

0.85701 ± 0.15285

Stacking2

0.00028 ± 0.00015

0.00001 ± 0.00003

0.99722 ± 0.00374

0.00583 ± 0.00482

0.00082 ± 0.00141

0.91730 ± 0.13410

VotingR1

0.00429 ± 0.00181

0.00017 ± 0.00015

0.95373 ± 0.01596

0.01682 ± 0.00851

0.00221 ± 0.00171

0.85456 ± 0.07522

VotingR2

0.00024 ± 0.00011

0.00006 ± 0.00003

0.99941 ± 0.00067

0.00464 ± 0.00375

0.00047 ± 0.00064

0.95782 ± 0.05873