TABLE 10. Error Comparison With Previous Methods.

Method	IIFDL	CNN [33]	HEKF [32]	AF [15], [26]	SISO AF / MISO AF [6]	KF [15], [26]	NN [15], [26]	LP [23]	Cubic [23]
Intra-fractional Variation (mm)	0.33	0.92	0.58	<2.0	1.58 / 1.71	<2.5	<2.5	1.2	N/A
Inter-fractional Variation (mm)	0.38	0.98	1.01	N/A	N/A	N/A	N/A	4.6	4.7