Developing a Travel Time Estimation Method of Freeway Based on Floating Car Using Random Forests

Table 4

10-fold cross-validation errors with a different number of trees in the forest.

trees	100		200		300
Data sets	Learn	Test	Learn	Test	Learn	Test
RMSE	2.2149	2.6889	2.2153	2.6857	2.2179	2.6789
MAD	0.9228	1.1243	0.9189	1.2112	0.9163	1.1165
trees	400		500		600
Data sets	Learn	Test	Learn	Test	Learn	Test
RMSE	2.2126	2.6752	2.2144	2.6703	2.2144	2.6703
MAD	0.9141	1.1163	0.9152	1.1151	0.9152	1.1151