Table 2.

Results of $m_{\mathit{GT}}$ measure in conducted experiments. The best result per network architecture is in bold, while the following two highest results are underlined.

Method	SCNN	VGG16	Res50
Experiment 1 (GTSRB*)
Grad-based	0.6616	0.8955	0.8071
Smooth-grad	0.5760	0.8657	0.8576
Guided Grad-CAM	0.7879	0.8695	0.8663
Guided GradProp	0.6444	0.8693	0.8659
Grad-CAM	0.6550	0.8519	0.8367
Smooth Grad-CAM++	0.6626	0.8635	0.8366
Grad-CAM++	0.6558	0.8548	0.8367
Fast-CAM	0.5865	0.4893	0.6465
Fast-CAM++	0.5721	0.4906	0.6465
Eigen-CAM	0.5760	0.8657	0.8576
Eigen Grad-CAM	0.7879	0.8695	0.8663
LayerCAM	0.6444	0.8693	0.8659
Poly-CAM	0.6550	0.8519	0.8367

Method	SCNN	VGG16	Res50
Experiment 2 (Zings)
Grad-based	0.5332	0.6354	0.5330
Smooth-grad	0.3256	0.3813	0.3273
Guided Grad-CAM	0.3544	0.5608	0.4668
Guided GradProp	0.3566	0.5023	0.4589
Grad-CAM	0.1740	0.5380	0.3088
Smooth Grad-CAM++	0.1581	0.4823	0.2986
Grad-CAM++	0.1712	0.5231	0.3080
Fast-CAM	0.2119	0.3603	0.2651
Fast-CAM++	0.2146	0.3802	0.2632
Eigen-CAM	0.0993	0.2576	0.2949
Eigen Grad-CAM	0.1707	0.3409	0.3203
LayerCAM	0.1941	0.6647	0.3226
Poly-CAM	0.2131	0.5769	0.3303

Method	SCNN	VGG16	Res50
Experiment 3 (LISA*)
Grad-based	0.6052	0.3893	0.5298
Smooth-grad	0.4434	0.5388	0.4959
Guided Grad-CAM	0.6885	0.6279	0.6478
Guided GradProp	0.6427	0.5722	0.6007
Grad-CAM	0.4144	0.3803	0.3014
Smooth Grad-CAM++	0.4392	0.3260	0.3082
Grad-CAM++	0.4323	0.3382	0.3014
Fast-CAM	0.5246	0.5430	0.5315
Fast-CAM++	0.5395	0.5949	0.5307
Eigen-CAM	0.4361	0.5069	0.4751
Eigen Grad-CAM	0.6726	0.6389	0.6256
LayerCAM	0.6309	0.5818	0.5954
Poly-CAM	0.4155	0.4488	0.3193

Method	VGG16	Res50	ResNext50
Experiment 4 (ImageNet-S${}_{50}$)
Grad-based	0.5349	0.5493	0.4927
Smooth-grad	0.4674	0.4758	0.4294
Guided Grad-CAM	0.5162	0.5249	0.4746
Guided GradProp	0.4677	0.4744	0.4305
Grad-CAM	0.6368	0.6489	0.6080
Smooth Grad-CAM++	0.6273	0.6484	0.6058
Grad-CAM++	0.6312	0.6500	0.6077
Fast-CAM	0.6351	0.6403	0.6081
Fast-CAM++	0.6308	0.6411	0.6083
Eigen-CAM	0.2220	0.6111	0.5793
Eigen Grad-CAM	0.2448	0.6275	0.6042
LayerCAM	0.5871	0.6525	0.6094
Poly-CAM	0.4720	0.5508	0.5307