Eddy Current Inversion Models for Estimating Dimensions of Defects in Multilayered Structures

Table 2

Main results obtained with the ANN, PLS regression and KPLS regression methods.

Data sets			ANN	PLS	KPLS
Training set	Length	𝑅^2	0.915	0.911	0.986
		RMSEC	0.316	0.323	0.128
	Width	𝑅^2	0.907	0.887	0.931
		RMSEC	0.338	0.372	0.291
	Depth	𝑅^2	0.929	0.902	0.966
		RMSEC	0.381	0.448	0.264
Testing set	Length	𝑄^2	0.705	0.858	0.953
		RMSEP	0.598	0.412	0.235
	Width	𝑄^2	0.691	0.821	0.894
		RMSEP	0.611	0.471	0.358
	Depth	𝑄^2	0.712	0.841	0.916
		RMSEP	0.618	0.573	0.415