Table 1 - Cross Validation Goodness-of-Fit Statistics for the Top Models

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Model	RMSE	F2
Full model	2029.2	6.59e+7	3.71e+9
All 2-way interactions	2118.2	9.28e+7	3.34e+9
No origin-destination interaction	4052.0	2.61e+8	3.81e+9
No origin-commodity interaction	4418.4	3.04e+8	4.03e+9
No destination-commodity interaction	2606.5	1.51e+8	2.86e+9

Note: RMSE is the root mean squared error of prediction, F² is the Freeman-Tukey statistic, and is the modified Pearson statistic.