Table 2.

The root mean square errors (RMSEs) of the three prediction models.

Direction	RMSEs (mm) of the LSTMa model	RMSEs (mm) of the TCNb model	RMSEs (mm) of the no prediction model
Anterior-posterior direction	0.29	0.28	0.50
Left-right direction	0.27	0.25	0.45
Superior-inferior direction	0.55	0.49	1.04
3D space	0.73	0.67	1.36

^aLSTM: long short-term memory.

^bTCN: temporal convolutional neural network.